CN116562081A - Method and device for designing strength of car lamp bracket by considering influence of injection molding factors - Google Patents
Method and device for designing strength of car lamp bracket by considering influence of injection molding factors Download PDFInfo
- Publication number
- CN116562081A CN116562081A CN202310451161.1A CN202310451161A CN116562081A CN 116562081 A CN116562081 A CN 116562081A CN 202310451161 A CN202310451161 A CN 202310451161A CN 116562081 A CN116562081 A CN 116562081A
- Authority
- CN
- China
- Prior art keywords
- bracket
- car
- lamp bracket
- car lamp
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000001746 injection moulding Methods 0.000 title claims abstract description 38
- 238000004088 simulation Methods 0.000 claims abstract description 55
- 238000004458 analytical method Methods 0.000 claims abstract description 36
- 238000013461 design Methods 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 30
- 238000013507 mapping Methods 0.000 claims description 18
- 238000005457 optimization Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 14
- 230000005284 excitation Effects 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 12
- 230000007935 neutral effect Effects 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000004154 testing of material Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000012356 Product development Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000013473 artificial intelligence Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/22—Moulding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a method and a device for designing the strength of a car lamp bracket by considering the influence of injection molding factors. According to the invention, the residual stress and the fiber distribution direction of the car light bracket after injection molding are obtained by carrying out the die flow simulation on the car light bracket in the early stage, the die flow simulation result is mapped to the structure simulation analysis software, the car light bracket strength design method considering the influence of the car light injection molding factors is obtained, and the performance design is carried out on the car light bracket. In addition, the simulation analysis precision of the car lamp bracket can be effectively improved, the strength performance of the car lamp bracket is virtually verified in the product development stage, the risk of failure of the subsequent car lamp bracket is reduced, the development period of car lamp products is shortened, the mold cost of re-opening the mold due to unqualified structure of the products is reduced, and the intelligent means of car lamp product development are effectively improved.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a method and a device for designing the strength of a car lamp bracket by considering the influence of injection molding factors.
Background
Along with the continuous progress of science and technology, the car lamp of car becomes more gorgeous, and configuration and molding of car lamp also become one of the main factors considered when people purchase the car, and along with the powerful car lamp function, the accessory in the car lamp also increases, and the weight of car lamp also increases along with it, and the risk that the car lamp support breaks also increases again. The lamp bracket is basically made of plastic, the strength of the plastic is relatively low, glass fibers are usually added into the plastic to improve the characteristics of the material in order to increase the strength of the bracket, and after the glass fibers are added, the material shows obvious anisotropy, and the analysis result and the actual deviation are relatively large according to isotropy analysis by adopting a traditional simulation analysis method. And the plastic part is formed by injection molding, the fiber distribution in the injection molding process is complex along with the injection molding direction, and injection molding residual stress exists in the part after injection molding.
Disclosure of Invention
The invention provides a method and a device for designing the strength of a car lamp bracket by considering the influence of injection molding factors. The simulation analysis precision of the car lamp bracket can be effectively improved, the intensity performance of the car lamp bracket is virtually verified in the product development stage, the subsequent risk of failure of the car lamp bracket is reduced, the development period of car lamp products is shortened, the mould cost of re-opening the mould due to unqualified structure of the products is reduced, the intelligent means of car lamp product development are effectively improved, and the problems of the existing car lamp bracket intensity design method are solved.
The technical scheme of the invention is as follows in combination with the accompanying drawings:
in a first aspect, an embodiment of the present invention provides a method for designing a strength of a vehicle lamp bracket in consideration of an influence of injection molding factors, including the steps of:
step one, extracting a neutral surface of a vehicle lamp bracket and dividing a surface grid in the bracket;
step two, the grids are guided into a die flow software moldflow, the quality of the grids is checked, and the grids are repaired;
modeling a pouring system and a cooling system, and setting process parameters to complete simulation and optimization of a model flow;
step four, completing grid division of other parts except the lamp bracket of the lamp assembly;
step five, assembling the car lamp assembly according to the connection relation of the real car;
step six, endowing the material attribute to each part of the car lamp assembly;
arranging an acceleration sensor at the root of the car light bracket, finishing the collection of the reinforced bad road spectrum, and converting the collected signal into a PSD signal;
step eight, using the PSD signal as excitation to finish the vibration intensity analysis of the car lamp bracket;
step nine, molding the car lamp bracket material into standard sample bars to finish the test of the low-speed tensile materials of 0 DEG, 45 DEG and 90 DEG;
tenth, mapping from the simulation result of the model flow to the structural model is completed, wherein the mapping comprises residual stress and fiber direction information;
step eleven, submitting the mapped model to calculation;
and step twelve, carrying out post-processing on the calculation result, extracting stress information, if the stress information is unqualified, carrying out optimization, and ending the flow if the stress information is qualified.
Further, in the first step,
the basic grid size of the neutral plane is 5mm, the grids are triangular units, and units with different thicknesses are placed in layers with corresponding thicknesses;
the grids of the support ribs are drawn according to the height of the actual ribs and are kneaded with the part nodes.
Further, in the second step,
when the grid quality is checked, the grid is ensured to be oriented correctly, blue is directed to the cavity, red is directed to the core, no cross overlapping area exists, the maximum aspect ratio is less than 20, the average aspect ratio is less than 3, and the pouring system is kept communicated.
Further, in the third step,
the sequence of the die flow simulation is filling, filling and pressure maintaining and warping, cooling and filling and pressure maintaining and warping, and the next working condition analysis is carried out after the previous analysis working condition is completed.
Further, in the fourth step,
the neutral surfaces of other parts except the lamp support of the lamp assembly are extracted by hypermesh, quadrilateral grids are adopted, and the basic size of the grids is 5mm.
Further, in the fifth step,
for the buckle connection, adopting a CONNECTOR unit simulation to endow the buckle with rigidity characteristics of 6 degrees of freedom; the 6 degrees of freedom comprise X, Y, Z three translational degrees of freedom and X, Y, Z three rotational degrees of freedom, and the rigidity characteristic is obtained according to test;
for the screw connection, a rigid unit was used for simulation.
Further, in the step six,
the material property is given according to the BOM mark, the parameter characteristics of the material are obtained from a material manufacturer, and the quality of the finite element of the car lamp assembly is ensured to be the same as the design quality.
Further, in the step seven,
the acceleration sensor collects signals in three directions including X, Y, Z, and measured signals need to be processed and burrs are removed.
Further, in the step eight,
in structural software ABAQUS, setting a car lamp bracket as an excitation point, applying a random vibration signal to the excitation point, and loading according to PSD random vibration acquired by a road spectrum to complete random vibration simulation of a car lamp assembly; random vibration of the car lamp assembly comprises X, Y, Z directions, contact between parts of the car lamp assembly is set, and damping coefficient is set to be 0.05.
Further, in the step of ten,
and simultaneously importing a fluid model and a structural model by utilizing the helium software, setting a unit, completing alignment, completing mapping of simulation stress of a die flow and fiber direction to the structural software, selecting output warpage during output, and starting fracture.
Further, in the step eleven,
the mapped model files comprise an inp file, a sif file, a hin file and a sif file, wherein the files comprise fiber direction and strain information, three folders are placed under a catalogue during calculation, the inp file is submitted to calculation, and if the model is wrongly reported, the model is debugged, so that the random vibration joint simulation analysis of the car lamp bracket assembly is completed.
Further, in the step twelve,
and (3) importing the analysis result into post-processing software hyperview, extracting a stress result of random vibration analysis, wherein if the maximum stress exceeds allowable stress, the structure of the car lamp bracket is required to be optimized, and the optimization method comprises local reinforcement and structural reinforcement until the performance meets the requirement, so that the bracket can be manufactured.
In a second aspect, an embodiment of the present invention further provides a device for designing a strength of a vehicle lamp bracket, which considers an influence of an injection molding factor, including:
the middle surface mesh dividing module is used for extracting the neutral surface of the lamp bracket and dividing the middle surface mesh of the bracket;
the grid quality inspection and repair module is used for guiding the grid into a moldflow software for moldflow, inspecting the grid quality and repairing the grid;
the model flow simulation analysis and optimization module is used for modeling the pouring system and the cooling system, setting process parameters and completing model flow simulation and optimization;
the assembly grid division and assembly module is used for completing grid division of other parts except the lamp bracket of the lamp assembly;
the assembly module is used for assembling the car lamp assembly according to the real car connection relation;
the material attribute giving module is used for giving material attributes to all parts of the car lamp assembly;
the road spectrum acquisition module is used for carrying out reinforced bad road load acquisition on the fixed position of the root of the car lamp bracket, and the acquired load is used as an excitation source for analyzing the vibration intensity of the car lamp bracket to be input;
the bracket vibration intensity analysis module is used for completing the vibration intensity analysis of the vehicle lamp bracket;
the low-speed tensile material testing module is used for injecting the car lamp bracket material into standard sample bars to finish the low-speed tensile material testing of 0 DEG, 45 DEG and 90 DEG;
the model flow-structure mapping module is used for mapping the strain and fiber direction distribution information output by the model flow simulation into the structure simulation software;
the bracket joint simulation module is used for carrying out vibration intensity joint simulation analysis on the vehicle lamp bracket which is subjected to the mapping and considers the influence of injection molding factors;
and the structure optimization module is used for optimizing the simulation strength result until the strength meets the performance requirement.
In a third aspect, a terminal is provided, including:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
the method according to the first aspect of the embodiment of the invention is performed.
In a fourth aspect, a non-transitory computer readable storage medium is provided, which when executed by a processor of a terminal, enables the terminal to perform the method according to the first aspect of the embodiments of the invention.
In a fifth aspect, an application product is provided, which when running at a terminal causes the terminal to perform the method according to the first aspect of the embodiments of the invention.
The beneficial effects of the invention are as follows:
according to the invention, the residual stress and fiber direction distribution of the car light bracket after injection molding are obtained by carrying out the model flow simulation on the car light bracket, the model flow result is mapped into the structure simulation software through the third party software to form the car light bracket simulation model considering the influence of injection molding factors, the excitation signal transmitted to the root of the car light bracket by strengthening bad road is obtained through the road spectrum acquisition, the signal is converted into the PSD signal of the frequency domain, and the PSD signal is applied to the car light, so that the vibration intensity joint simulation of the car light is completed. The method can verify the strength performance of the car lamp bracket and optimize the car lamp bracket through a virtual simulation technical means in the design stage of the car lamp product, reduce the risk of re-opening the mould in the later stage of the product, improve the development efficiency of the product and save time and money cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for designing the strength of a vehicle lamp bracket taking into account the influence of injection molding factors;
FIG. 2 is a schematic diagram of a device for designing the strength of a vehicle lamp according to the present invention, which takes into consideration the influence of injection molding;
fig. 3 is a schematic block diagram of a terminal structure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1
Fig. 1 is a flowchart of a method for designing the strength of a vehicle lamp bracket according to an embodiment of the present invention, where the method is applicable to a vehicle lamp bracket strength design according to an injection molding factor, and the method may be performed by a vehicle lamp bracket strength design device according to an injection molding factor, and the device may be implemented in software and/or hardware.
The method comprises the following steps:
step one, extracting a neutral surface of a vehicle lamp bracket and dividing a surface grid in the bracket;
the basic grid size of the neutral plane is 5mm, the grids are triangular units, and units with different thicknesses are placed in layers with corresponding thicknesses;
the grids of the support ribs are drawn according to the height of the actual ribs and are kneaded with the part nodes.
Step two, the grids are guided into a die flow software moldflow, the quality of the grids is checked, and the grids are repaired;
when the grid quality is checked, the grid is ensured to be oriented correctly, blue is directed to the cavity, red is directed to the core, no cross overlapping area exists, the maximum aspect ratio is less than 20, the average aspect ratio is less than 3, and the pouring system is kept communicated.
Modeling a pouring system and a cooling system, and setting process parameters to complete simulation and optimization of a model flow;
the sequence of the die flow simulation is filling, filling and pressure maintaining and warping, cooling and filling and pressure maintaining and warping, and the next working condition analysis is carried out after the previous analysis working condition is completed.
Step four, completing grid division of other parts except the lamp bracket of the lamp assembly;
the neutral surfaces of other parts except the lamp support of the lamp assembly are extracted by hypermesh, quadrilateral grids are adopted, and the basic size of the grids is 5mm.
Step five, assembling the car lamp assembly according to the connection relation of the real car;
for the buckle connection, adopting a CONNECTOR unit simulation to endow the buckle with rigidity characteristics of 6 degrees of freedom; the 6 degrees of freedom comprise X, Y, Z three translational degrees of freedom and X, Y, Z three rotational degrees of freedom, and the rigidity characteristic is obtained according to test;
for screw connection, adopting a rigid unit for simulation;
step six, endowing the material attribute to each part of the car lamp assembly;
the material property is given according to the BOM mark, the parameter characteristics of the material are obtained from a material manufacturer, and the quality of the finite element of the car lamp assembly is ensured to be the same as the design quality.
Arranging an acceleration sensor at the root of the car light bracket, finishing the collection of the reinforced bad road spectrum, and converting the collected signal into a PSD signal;
the acceleration sensor collects signals in three directions including X, Y, Z, and measured signals need to be processed and burrs are removed.
Step eight, using the PSD signal as excitation to finish the vibration intensity analysis of the car lamp bracket;
in structural software ABAQUS, setting a car lamp bracket as an excitation point, applying a random vibration signal to the excitation point, and loading according to PSD random vibration acquired by a road spectrum to complete random vibration simulation of a car lamp assembly; random vibration of the car lamp assembly comprises X, Y, Z directions, contact between parts of the car lamp assembly is set, and damping coefficient is set to be 0.05.
Step nine, molding the car lamp bracket material into standard sample bars to finish the test of the low-speed tensile materials of 0 DEG, 45 DEG and 90 DEG;
tenth, mapping from the simulation result of the model flow to the structural model is completed, wherein the mapping comprises residual stress and fiber direction information;
and simultaneously importing a fluid model and a structural model by utilizing the helium software, setting a unit, completing alignment, completing mapping of simulation stress of a die flow and fiber direction to the structural software, selecting output warpage during output, and starting fracture.
Step eleven, submitting the mapped model to calculation;
the mapped model files comprise an inp file, a sif file, a hin file and a sif file, wherein the files comprise fiber direction and strain information, three folders are placed under a catalogue during calculation, the inp file is submitted to calculation, and if the model is wrongly reported, the model is debugged, so that the random vibration joint simulation analysis of the car lamp bracket assembly is completed.
And step twelve, carrying out post-processing on the calculation result, extracting stress information, if the stress information is unqualified, carrying out optimization, and ending the flow if the stress information is qualified.
And (3) importing the analysis result into post-processing software hyperview, extracting a stress result of random vibration analysis, wherein if the maximum stress exceeds allowable stress, the structure of the car lamp bracket is required to be optimized, and the optimization method comprises local reinforcement and structural reinforcement until the performance meets the requirement, so that the bracket can be manufactured.
According to the invention, the residual stress and the fiber distribution direction of the car lamp bracket after injection molding are obtained by carrying out the die flow simulation on the car lamp bracket in the early stage, the die flow simulation result is mapped to the structure simulation analysis software, and finally the car lamp bracket strength design method considering the influence of the car lamp injection molding factors is obtained, and the performance design is carried out on the car lamp bracket. According to the invention, the simulation analysis precision of the car lamp bracket can be effectively improved, the intensity performance of the car lamp bracket is virtually verified in the product development stage, the subsequent risk of failure of the car lamp bracket is reduced, the development period of car lamp products is shortened, the mold cost of re-opening the mold due to unqualified structure of the products is reduced, and the intelligent means of car lamp product development are effectively improved.
Example two
Referring to fig. 2, a device for designing the strength of a lamp stand in consideration of the influence of injection molding factors, comprising:
the middle surface mesh dividing module is used for extracting the neutral surface of the lamp bracket and dividing the middle surface mesh of the bracket;
the grid quality inspection and repair module is used for guiding the grid into a moldflow software for moldflow, inspecting the grid quality and repairing the grid;
the model flow simulation analysis and optimization module is used for modeling the pouring system and the cooling system, setting process parameters and completing model flow simulation and optimization;
the assembly grid division and assembly module is used for completing grid division of other parts except the lamp bracket of the lamp assembly;
the assembly module is used for assembling the car lamp assembly according to the real car connection relation;
the material attribute giving module is used for giving material attributes to all parts of the car lamp assembly;
the road spectrum acquisition module is used for carrying out reinforced bad road load acquisition on the fixed position of the root of the car lamp bracket, and the acquired load is used as an excitation source for analyzing the vibration intensity of the car lamp bracket to be input;
the bracket vibration intensity analysis module is used for completing the vibration intensity analysis of the vehicle lamp bracket;
the low-speed tensile material testing module is used for injecting the car lamp bracket material into standard sample bars to finish the low-speed tensile material testing of 0 DEG, 45 DEG and 90 DEG;
the model flow-structure mapping module is used for mapping the strain and fiber direction distribution information output by the model flow simulation into the structure simulation software;
the bracket joint simulation module is used for carrying out vibration intensity joint simulation analysis on the vehicle lamp bracket which is subjected to the mapping and considers the influence of injection molding factors;
and the structure optimization module is used for optimizing the simulation strength result until the strength meets the performance requirement.
Example III
Fig. 3 is a block diagram of a terminal provided in an embodiment of the present application, where the terminal may be a terminal in the foregoing embodiment. The terminal 300 may be a portable mobile terminal such as: smart phone, tablet computer. The terminal 300 may also be referred to by other names of user equipment, portable terminals, etc.
In general, the terminal 300 includes: a processor 301 and a memory 302.
Processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 301 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 301 may also include a main processor, which is a processor for processing data in an awake state, also called a CPU (Central Processing Unit ), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 301 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 301 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. Memory 302 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 302 is used to store at least one instruction for execution by processor 301 to implement a vehicle lamp fixture strength design method that takes into account injection molding considerations provided herein.
In some embodiments, the terminal 300 may further optionally include: a peripheral interface 303, and at least one peripheral. Specifically, the peripheral device includes: at least one of radio frequency circuitry 304, touch screen 305, camera 306, audio circuitry 307, positioning component 308, and power supply 309.
The peripheral interface 303 may be used to connect at least one Input/Output (I/O) related peripheral to the processor 301 and the memory 302. In some embodiments, processor 301, memory 302, and peripheral interface 303 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 301, the memory 302, and the peripheral interface 303 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 304 is configured to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuitry 304 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 304 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 304 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuitry 304 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area networks, intranets, generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuitry 304 may also include NFC (Near Field Communication ) related circuitry, which is not limited in this application.
The touch display screen 305 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. The touch screen 305 also has the ability to collect touch signals at or above the surface of the touch screen 305. The touch signal may be input as a control signal to the processor 301 for processing. The touch screen 305 is used to provide virtual buttons and/or virtual keyboards, also known as soft buttons and/or soft keyboards. In some embodiments, the touch display 305 may be one, providing a front panel of the terminal 300; in other embodiments, the touch display 305 may be at least two, respectively disposed on different surfaces of the terminal 300 or in a folded design; in still other embodiments, the touch display 305 may be a flexible display disposed on a curved surface or a folded surface of the terminal 300. Even more, the touch display screen 305 may be arranged in an irregular pattern that is not rectangular, i.e., a shaped screen. The touch display 305 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.
The camera assembly 306 is used to capture images or video. Optionally, the camera assembly 306 includes a front camera and a rear camera. In general, a front camera is used for realizing video call or self-photographing, and a rear camera is used for realizing photographing of pictures or videos. In some embodiments, the number of the rear cameras is at least two, and the rear cameras are any one of a main camera, a depth camera and a wide-angle camera, so as to realize fusion of the main camera and the depth camera to realize a background blurring function, and fusion of the main camera and the wide-angle camera to realize a panoramic shooting function and a Virtual Reality (VR) shooting function. In some embodiments, camera assembly 306 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.
Audio circuitry 307 is used to provide an audio interface between the user and terminal 300. The audio circuit 307 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and environments, converting the sound waves into electric signals, and inputting the electric signals to the processor 301 for processing, or inputting the electric signals to the radio frequency circuit 304 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones may be respectively disposed at different portions of the terminal 300. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 301 or the radio frequency circuit 304 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, the audio circuit 307 may also include a headphone jack.
The location component 308 is used to locate the current geographic location of the terminal 300 to enable navigation or LBS (Location Based Service, location-based services). The positioning component 308 may be a positioning component based on the United states GPS (Global Positioning System ), the Beidou system of China, or the Galileo system of Russia.
The power supply 309 is used to power the various components in the terminal 300. The power source 309 may be alternating current, direct current, disposable or rechargeable. When the power source 309 comprises a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
Those skilled in the art will appreciate that the structure shown in fig. 3 is not limiting and that more or fewer components than shown may be included or certain components may be combined or a different arrangement of components may be employed.
Example IV
In an exemplary embodiment, a computer readable storage medium is also provided, on which a computer program is stored, which program, when being executed by a processor, implements a method for designing the intensity of a vehicle lamp bracket taking into account the influence of injection molding factors as provided in all inventive embodiments of the present application.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Example five
In an exemplary embodiment, an application program product is also provided that includes one or more instructions that are executable by the processor 301 of the apparatus to perform a method of designing a lamp support intensity that takes into account the effects of injection molding as described above.
Although embodiments of the present invention have been disclosed above, they are not limited to the use listed in the description and modes of implementation. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (15)
1. The design method for the strength of the car lamp bracket considering the influence of injection molding factors is characterized by comprising the following steps of:
step one, extracting a neutral surface of a vehicle lamp bracket and dividing a surface grid in the bracket;
step two, the grids are guided into a die flow software moldflow, the quality of the grids is checked, and the grids are repaired;
modeling a pouring system and a cooling system, and setting process parameters to complete simulation and optimization of a model flow;
step four, completing grid division of other parts except the lamp bracket of the lamp assembly;
step five, assembling the car lamp assembly according to the connection relation of the real car;
step six, endowing the material attribute to each part of the car lamp assembly;
arranging an acceleration sensor at the root of the car light bracket, finishing the collection of the reinforced bad road spectrum, and converting the collected signal into a PSD signal;
step eight, using the PSD signal as excitation to finish the vibration intensity analysis of the car lamp bracket;
step nine, molding the car lamp bracket material into standard sample bars to finish the test of the low-speed tensile materials of 0 DEG, 45 DEG and 90 DEG;
tenth, mapping from the simulation result of the model flow to the structural model is completed, wherein the mapping comprises residual stress and fiber direction information;
step eleven, submitting the mapped model to calculation;
and step twelve, carrying out post-processing on the calculation result, extracting stress information, if the stress information is unqualified, carrying out optimization, and ending the flow if the stress information is qualified.
2. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the first step is to consider the influence of injection molding,
the basic grid size of the neutral plane is 5mm, the grids are triangular units, and units with different thicknesses are placed in layers with corresponding thicknesses;
the grids of the support ribs are drawn according to the height of the actual ribs and are kneaded with the part nodes.
3. The method for designing the strength of the vehicle lamp bracket taking the influence of injection molding factors into consideration as set forth in claim 1, wherein in the second step,
when the grid quality is checked, the grid is ensured to be oriented correctly, blue is directed to the cavity, red is directed to the core, no cross overlapping area exists, the maximum aspect ratio is less than 20, the average aspect ratio is less than 3, and the pouring system is kept communicated.
4. The method for designing the strength of the vehicle lamp bracket taking the influence of injection molding factors into consideration as set forth in claim 1, wherein in the third step,
the sequence of the die flow simulation is filling, filling and pressure maintaining and warping, cooling and filling and pressure maintaining and warping, and the next working condition analysis is carried out after the previous analysis working condition is completed.
5. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the fourth step,
the neutral surfaces of other parts except the lamp support of the lamp assembly are extracted by hypermesh, quadrilateral grids are adopted, and the basic size of the grids is 5mm.
6. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the fifth step,
for the buckle connection, adopting a CONNECTOR unit simulation to endow the buckle with rigidity characteristics of 6 degrees of freedom; the 6 degrees of freedom comprise X, Y, Z three translational degrees of freedom and X, Y, Z three rotational degrees of freedom, and the rigidity characteristic is obtained according to test;
for the screw connection, a rigid unit was used for simulation.
7. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the step six,
the material property is given according to the BOM mark, the parameter characteristics of the material are obtained from a material manufacturer, and the quality of the finite element of the car lamp assembly is ensured to be the same as the design quality.
8. The method for designing the strength of the vehicle lamp bracket taking the influence of injection molding into consideration as set forth in claim 1, wherein in the seventh step,
the acceleration sensor collects signals in three directions including X, Y, Z, and measured signals need to be processed and burrs are removed.
9. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the step eight,
in structural software ABAQUS, setting a car lamp bracket as an excitation point, applying a random vibration signal to the excitation point, and loading according to PSD random vibration acquired by a road spectrum to complete random vibration simulation of a car lamp assembly; random vibration of the car lamp assembly comprises X, Y, Z directions, contact between parts of the car lamp assembly is set, and damping coefficient is set to be 0.05.
10. The method for designing the strength of the car lamp bracket taking the influence of injection molding factors into consideration as set forth in claim 1, wherein in the step ten,
and simultaneously importing a fluid model and a structural model by utilizing the helium software, setting a unit, completing alignment, completing mapping of simulation stress of a die flow and fiber direction to the structural software, selecting output warpage during output, and starting fracture.
11. The method for designing the strength of the lamp stand for a vehicle according to claim 1, wherein the step eleven,
the mapped model files comprise an inp file, a sif file, a hin file and a sif file, wherein the files comprise fiber direction and strain information, three folders are placed under a catalogue during calculation, the inp file is submitted to calculation, and if the model is wrongly reported, the model is debugged, so that the random vibration joint simulation analysis of the car lamp bracket assembly is completed.
12. The method for designing the strength of the car lamp bracket taking the influence of injection molding factors into consideration as set forth in claim 1, wherein the step twelve,
and (3) importing the analysis result into post-processing software hyperview, extracting a stress result of random vibration analysis, wherein if the maximum stress exceeds allowable stress, the structure of the car lamp bracket is required to be optimized, and the optimization method comprises local reinforcement and structural reinforcement until the performance meets the requirement, so that the bracket can be manufactured.
13. The utility model provides a car light support intensity design device that factor influences of moulding plastics is considered which characterized in that includes:
the middle surface mesh dividing module is used for extracting the neutral surface of the lamp bracket and dividing the middle surface mesh of the bracket;
the grid quality inspection and repair module is used for guiding the grid into a moldflow software for moldflow, inspecting the grid quality and repairing the grid;
the model flow simulation analysis and optimization module is used for modeling the pouring system and the cooling system, setting process parameters and completing model flow simulation and optimization;
the assembly grid division module is used for completing grid division of other parts except the lamp bracket of the lamp assembly;
the assembly module is used for assembling the car lamp assembly according to the real car connection relation;
the material attribute giving module is used for giving material attributes to all parts of the car lamp assembly;
the road spectrum acquisition module is used for carrying out reinforced bad road load acquisition on the fixed position of the root of the car lamp bracket, and the acquired load is used as an excitation source for analyzing the vibration intensity of the car lamp bracket to be input;
the bracket vibration intensity analysis module is used for completing the vibration intensity analysis of the vehicle lamp bracket;
the low-speed tensile material testing module is used for injecting the car lamp bracket material into standard sample bars to finish the low-speed tensile material testing of 0 DEG, 45 DEG and 90 DEG;
the model flow-structure mapping module is used for mapping the strain and fiber direction distribution information output by the model flow simulation into the structure simulation software;
the bracket joint simulation module is used for carrying out vibration intensity joint simulation analysis on the vehicle lamp bracket which is subjected to the mapping and considers the influence of injection molding factors;
and the structure optimization module is used for optimizing the simulation strength result until the strength meets the performance requirement.
14. A terminal, comprising:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
a method of designing the strength of a lamp support for a vehicle, taking into account the influence of injection molding as claimed in any one of claims 1 to 12 is carried out.
15. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of a terminal, enable the terminal to perform a vehicle lamp bracket strength design method taking into account injection molding factors as claimed in any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310451161.1A CN116562081A (en) | 2023-04-25 | 2023-04-25 | Method and device for designing strength of car lamp bracket by considering influence of injection molding factors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310451161.1A CN116562081A (en) | 2023-04-25 | 2023-04-25 | Method and device for designing strength of car lamp bracket by considering influence of injection molding factors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116562081A true CN116562081A (en) | 2023-08-08 |
Family
ID=87490869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310451161.1A Pending CN116562081A (en) | 2023-04-25 | 2023-04-25 | Method and device for designing strength of car lamp bracket by considering influence of injection molding factors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116562081A (en) |
-
2023
- 2023-04-25 CN CN202310451161.1A patent/CN116562081A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108909717A (en) | Lightweight horizontal determining method, device and the storage medium of electric car | |
| CN116562081A (en) | Method and device for designing strength of car lamp bracket by considering influence of injection molding factors | |
| CN115081101A (en) | Mechanical impact simulation method and device for vehicle-mounted display screen, terminal and storage medium | |
| CN115033978A (en) | Simulation analysis method, device, terminal and storage medium for transient strength of oil tank partition | |
| CN116562084A (en) | Design method and device for controlling assembly clearance of lower decorative plate of vehicle door | |
| CN117034681A (en) | Method, device, terminal and storage medium for analyzing dent resistance of automobile body outer panel | |
| CN115238536A (en) | Passenger car front-end module structure design method, device, terminal and storage medium | |
| CN117034442A (en) | Method, device and terminal for designing strength of bracket in bumper of passenger car | |
| CN116595628A (en) | Method and device for designing elbow impact rigidity of vehicle door guard plate assembly | |
| CN116702536A (en) | Method and device for simulating structural strength and durability of air cylinder for air suspension | |
| CN116562083A (en) | Design method and device for reducing risk of thermal deformation gap of plastic back door | |
| CN113312703B (en) | Simulation method and device for automobile bushing and computer storage medium | |
| CN114969964A (en) | Random vibration simulation method and device for vehicle-mounted display screen, terminal and storage medium | |
| CN116894294A (en) | Method, device, terminal and storage medium for enlarging forming margin of stamping die | |
| CN116861735A (en) | Method, device, terminal and storage medium for defining expansion parameters of internal structure of battery cell | |
| CN115221751A (en) | Method and device for acquiring load spectrum of random vibration bench test of power battery module | |
| CN115220699A (en) | Software architecture generation method, device, terminal and storage medium based on model development | |
| CN113433862B (en) | Simulation method and device of new energy automobile energy management system and storage medium | |
| CN116562085A (en) | Method and device for designing gap between bumper and fender of passenger car | |
| CN113886959A (en) | Clamping structure rigidity simulation modeling method, system, terminal and storage medium | |
| CN113361036B (en) | Analog simulation method and device for automobile shock absorber and computer storage medium | |
| CN117010237A (en) | Rapid assembly method and device for simulation analysis of automobile electric drive system | |
| CN115964356A (en) | Method, system, terminal and storage medium for establishing part database | |
| CN114004017A (en) | Parameterization optimization method, system, terminal and storage medium for engine hood reinforcing rib | |
| CN116882083A (en) | Forward design method and device for rubber cup structure of hydraulic bushing of control arm of passenger car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |