CN117010235A - Analysis method, device, terminal and storage medium for avoiding sinking of doors of passenger car - Google Patents
Analysis method, device, terminal and storage medium for avoiding sinking of doors of passenger car Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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Abstract
The application belongs to the technical field of automobiles, and particularly relates to an analysis method, an analysis device, a terminal and a storage medium for avoiding sinking of doors of passenger automobiles. The method comprises the following steps: step one, obtaining initial design data of a vehicle door, a hinge and a vehicle body; optimizing and analyzing main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment; and thirdly, if the sinking amount meets the requirement, performing formal data distribution on the vehicle door, the hinge and the vehicle body. According to the application, by combining with the CAE simulation analysis method, on the premise that the main influencing factors of the sinking of the vehicle door, such as the vehicle door quality, the self-rigidity of the hinge, the rigidity of the hinge installation point at the vehicle door side and the rigidity of the hinge installation point at the vehicle body side firstly meet the performance requirements, the sinking analysis of the full-equipment vehicle door can be carried out, and the problem of the sinking of the vehicle door in an actual workshop can be effectively solved.
Description
Technical Field
The application belongs to the technical field of automobiles, and particularly relates to an analysis method, an analysis device, a terminal and a storage medium for avoiding sinking of doors of passenger automobiles.
Background
The vehicle door is an important part assembly of the vehicle and is one of parts with higher use frequency. Because the size specification is large, the sinking problem is very easy to occur in the installation and use process, and the appearance quality of the whole car, the lock knocked on and off of the car door and the normal use are influenced.
In the past, the sinking problem still occurs in the subsequent real vehicles because the risk points cannot be identified through single-dimensional vertical rigidity calculation; and after sinking, the structure is optimized and calculated, so that the optimization direction is searched, and a large amount of development period and cost are required to be consumed.
Disclosure of Invention
The application provides an analysis method, a device, a terminal and a storage medium for avoiding sinking of a passenger car door, which are combined with a CAE simulation analysis method, and can effectively solve the problem of sinking of an actual workshop car door by carrying out full-equipment car door on the premise that the main influencing factors of sinking of the car door, such as the quality of the car door, the rigidity of a hinge, the rigidity of a mounting point of a hinge at the car door side and the rigidity of a mounting point of a hinge at the car body side firstly meet the performance requirements.
The technical scheme of the application is as follows in combination with the accompanying drawings:
in a first aspect, an embodiment of the present application provides an analysis method for avoiding sinking of a door of a passenger car, including the steps of:
step one, obtaining initial design data of a vehicle door, a hinge and a vehicle body;
optimizing and analyzing main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
and thirdly, if the sinking amount meets the requirement, performing formal data distribution on the vehicle door, the hinge and the vehicle body.
Further, in the second step, the main factors of the sinking of the door include the door mass, the hinge self rigidity, the door-side hinge mounting point rigidity, and the vehicle-body side hinge mounting point rigidity.
Further, the specific method of the second step is as follows:
carrying out optimization analysis on main influence factors of vehicle door sinking, wherein the optimization analysis comprises the following steps:
s1, reducing the quality of a vehicle door;
s2, improving the rigidity of the hinge;
s3, improving the rigidity of the mounting point of the hinge at the side of the vehicle door;
s4, improving the rigidity of the mounting point of the hinge on the vehicle body side;
analysis of full-equipment door sag, comprising:
s5, establishing a full-equipment door belt body finite element model, and carrying out dead weight sinking analysis on the door.
Further, the specific method of step S1 is as follows:
the quality of the vehicle door is reduced by reducing the material thickness of the outer plate, the outer windowsill reinforcing plate, the window frame reinforcing plate, the door lock reinforcing plate, the outer handle reinforcing plate and the anti-collision beam.
Further, the specific method of step S2 is as follows:
a1, optimizing hinge arrangement and a hinge structure, wherein the hinge arrangement and the hinge structure comprise increasing the hinge spacing, increasing the hinge contact area and increasing the hinge base material thickness;
a2, establishing a hinge finite element model, and analyzing the rigidity of the hinge;
the hinge base is fully restrained, the rigid unit is connected with the fixing hole of the hinge arm, the central point of the rigid unit is a door lock meshing point, a load in the Z direction is applied to the meshing point, and the rigidity of the hinge is calculated;
a3, judging whether the rigidity of the hinge meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through the a1, and executing the a2 to the a3 until the rigidity of the hinge meets the requirement.
Further, the specific method of step S3 is as follows:
b1, optimizing a door side hinge installation area structure, wherein the structure comprises the steps of increasing the material thickness of a door inner plate in a hinge installation area, increasing the thickness of an upper hinge reinforcing plate material and a lower hinge reinforcing plate material, enhancing the structural characteristics of reinforcing ribs of the upper hinge reinforcing plate and the lower hinge reinforcing plate, increasing the structure of an upper nut plate and a lower nut plate at a hinge installation position and adjusting the welding spot density of the hinge reinforcing plate;
b2, establishing a door finite element model, and analyzing the rigidity of a door side hinge mounting point;
the method comprises the steps of removing the rigidity of an upper hinge mounting point, removing the upper hinge, fully restraining the lower hinge, a door lock, two ends of the lower edge of a vehicle door and the central part of the vehicle door hinge, applying a pulling load along the plane of an upper hinge mounting hole, and calculating the normal rigidity of the upper hinge mounting point;
the rigidity of the mounting point of the lower hinge is removed, the lower hinge is completely restrained at the upper hinge, the door lock, the two ends of the lower edge of the door and the central part of the door hinge, a pulling load is applied along the plane of the mounting hole of the lower hinge, and the normal rigidity of the mounting point of the lower hinge is calculated;
b3, judging whether the rigidity of the mounting points of the upper hinge and the lower hinge at the side of the door meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through b1, and then executing b2 to b3 until the rigidity of the mounting point of the door side hinge meets the requirement.
Further, the specific method of step S4 is as follows:
c1, optimizing a vehicle body side hinge mounting area structure, wherein the structure comprises the steps of adding a side wall reinforcing plate material thickness, adding an upper reinforcing plate structure and a lower reinforcing plate structure of an A column or a B column, adopting proper material thickness, and adopting a self-welding box structure for the upper reinforcing plate and the lower reinforcing plate of the A column;
c2, establishing a body-in-white finite element model, and analyzing the rigidity of a hinge mounting point at the side of the body;
the method comprises the steps of fully restraining 4 door openings of a white automobile body, respectively applying a pulling load along the plane where the upper hinge mounting holes and the lower hinge mounting holes on the automobile body side are positioned, and calculating the normal rigidity of the upper hinge mounting points and the lower hinge mounting points on the automobile body side;
c3, judging whether the rigidity of the mounting point of the hinge on the vehicle body side meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through c1, and executing c2 to c3 until the rigidity of the mounting point of the hinge on the side of the vehicle body meets the requirement.
Further, the specific method of step S5 is as follows:
d1, establishing a full-equipment finite element model of the vehicle door: the method comprises the steps of modeling a door metal plate, modeling a door inner ornament and a door outer ornament, and connecting according to an actual assembly relation; adjusting the mass and the mass center of the finite element model to enable the mass and the actual mass of the finite element model to be consistent;
d2, establishing a local vehicle body finite element model, wherein the vehicle body model must contain a complete vehicle door opening, and connecting a full-equipment vehicle door to a vehicle body through a hinge;
d3, carrying out dead weight sinking analysis of the vehicle door, restraining all degrees of freedom of the vehicle body interception part, restraining Y-direction degrees of freedom of the vehicle door lock, and applying 1G gravity;
and d4, reading the dead weight sinking amount of the vehicle door, judging whether the sinking amount meets the requirement, taking the sinking amount as a pre-adjustment target of the vehicle door of the welding workshop if the sinking amount meets the requirement, and executing one or more of the S1, the S2, the S3 and the S4 to perform structural optimization until the sinking amount meets the requirement if the sinking amount does not meet the requirement.
In a second aspect, an embodiment of the present application further provides an analysis apparatus for avoiding sinking of a door of a passenger car, including:
the acquisition module is used for acquiring initial design data of the vehicle door, the hinge and the vehicle body;
the analysis module is used for carrying out optimization analysis on main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
and the data issuing module is used for issuing formal data of the vehicle door, the hinge and the vehicle body if the sinking amount meets the 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 application 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 application.
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 application.
The beneficial effects of the application are as follows:
1) The application can identify and avoid the risk of insufficient sinking rigidity in the digital-analog design stage of the vehicle door, save development period and cost and improve the one-time design success rate of vehicle door product development;
2) According to the application, simulation analysis is carried out from a plurality of factors influencing the sinking of the vehicle door, and on the premise that the plurality of factors meet the performance, sinking analysis is carried out, so that no sinking problem of the subsequent real vehicle can be ensured;
3) The application provides the optimization direction of each dimension, can be used as the design direction of the vehicle door evasion problem, provides guiding suggestion for design, and saves the development period and cost of the vehicle body
4) The vehicle door sinking amount calculated by the full-equipment vehicle door is high in precision, the calculated value can be used as a target value of the pre-adjustment amount of the vehicle door of the welding workshop, and inaccuracy of manual estimation of the pre-adjustment amount by a designer is avoided;
5) The application improves the rigidity of the hinge, the rigidity of the mounting point of the hinge at the side of the vehicle door and the vehicle body, and greatly contributes to reducing the sinking amount; the other performance of the vehicle door is improved well, and the achievement of other performance indexes of the vehicle door can be ensured to a certain extent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application 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 an analysis method for avoiding sinking of a passenger car door according to the present application;
FIG. 2 is a flow chart of a second step of the present application;
FIG. 3 is a schematic illustration of a door structure;
FIG. 4 is a schematic view of hinge stiffness boundary conditions;
FIG. 5a is a schematic view of a door side hinge mounting point stiffness boundary condition;
FIG. 5b is a schematic view of a door side hinge mounting point stiffness boundary condition;
FIG. 6 is a schematic illustration of a side-to-side hinge mounting point stiffness boundary condition;
FIG. 7 is a schematic view of door sag boundary conditions;
FIG. 8 is a schematic structural view of an analysis device for avoiding sinking of a door of a passenger car according to the present application;
fig. 9 is a schematic block diagram of a terminal structure.
In the figure:
1. a door outer panel; 2. an outer sill reinforcing plate; 3. a window frame reinforcing plate; 4. door lock reinforcing plate; 5. an outer handle reinforcing plate; 6. an anti-collision beam.
Detailed Description
The following description of the embodiments of the present application 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 application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
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 application, 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 an analysis method for avoiding sinking of a door of a passenger car according to an embodiment of the present application, where the embodiment may be suitable for use in an analysis for avoiding sinking of a door of a passenger car, and the method may be performed by an analysis device for avoiding sinking of a door of a passenger car according to an embodiment of the present application, and the device may be implemented in a software and/or hardware manner.
After a certain passenger car is arranged on a car body in a final assembly workshop and a front car door of the whole equipment (comprising a car door sheet metal and inner and outer decoration parts) is mounted on the car body, the car door sinks and a fault phenomenon accompanied with lock is caused. The car door sinks under the action of self gravity, the assembly quality of the car door, the hinge itself, the hinge installation area of the car door hinge side and the rigidity of the hinge installation area of the car body side are main influence factors of the car door sinking, and the influence on the sinking amount is large, so that the problem is solved by the above 4 factors, and the method specifically comprises the following steps:
step one, obtaining initial design data of a vehicle door, a hinge and a vehicle body;
optimizing and analyzing main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
the main factors of door sag include door mass, hinge self-stiffness, door-side hinge mounting point stiffness, and body-side hinge mounting point stiffness.
Carrying out optimization analysis on main influence factors of vehicle door sinking, wherein the optimization analysis comprises the following steps:
s1, reducing the quality of a vehicle door, wherein the method specifically comprises the following steps of:
the quality of the vehicle door is reduced by reducing the material thickness of the outer plate, the outer windowsill reinforcing plate, the window frame reinforcing plate, the door lock reinforcing plate, the outer handle reinforcing plate and the anti-collision beam.
S2, improving the rigidity of the hinge, and specifically comprising the following steps:
a1, optimizing hinge arrangement and a hinge structure, wherein the hinge arrangement and the hinge structure comprise increasing the hinge spacing, increasing the hinge contact area and increasing the hinge base material thickness;
a2, establishing a hinge finite element model, and analyzing the rigidity of the hinge;
the hinge base is fully restrained, the rigid unit is connected with the fixing hole of the hinge arm, the central point of the rigid unit is a door lock meshing point, a load in the Z direction is applied to the meshing point, and the rigidity of the hinge is calculated;
the hinge finite element modeling comprises the steps that a hinge adopts a solid grid to divide grids, 5mm is taken as a basic grid, and the local characteristics are thinned by 2 mm; the pin simulates and releases the rotational direction freedom using a bar unit while giving the actual radial dimension.
The applied Z-load was 1000N.
a3, judging whether the rigidity of the hinge meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through the a1, and executing the a2 to the a3 until the rigidity of the hinge meets the requirement.
S3, improving the rigidity of the mounting point of the hinge at the side of the vehicle door, wherein the rigidity is as follows:
b1, optimizing a door side hinge installation area structure, wherein the structure comprises the steps of increasing the material thickness of a door inner plate in a hinge installation area, increasing the thickness of an upper hinge reinforcing plate material and a lower hinge reinforcing plate material, enhancing the structural characteristics of reinforcing ribs of the upper hinge reinforcing plate and the lower hinge reinforcing plate, increasing the structure of an upper nut plate and a lower nut plate at a hinge installation position and adjusting the welding spot density of the hinge reinforcing plate;
b2, establishing a door finite element model, and analyzing the rigidity of a door side hinge mounting point;
the method comprises the steps of removing the rigidity of an upper hinge mounting point, removing the upper hinge, fully restraining the lower hinge, a door lock, two ends of the lower edge of a vehicle door and the central part of the vehicle door hinge, applying a pulling load along the plane of an upper hinge mounting hole, and calculating the normal rigidity of the upper hinge mounting point;
the rigidity of the mounting point of the lower hinge is removed, the lower hinge is completely restrained at the upper hinge, the door lock, the two ends of the lower edge of the door and the central part of the door hinge, a pulling load is applied along the plane of the mounting hole of the lower hinge, and the normal rigidity of the mounting point of the lower hinge is calculated;
the finite element modeling of the vehicle door comprises the steps that the sheet metal of the vehicle door adopts sheet grids to divide grids, the basic size of the grids is 8mm, and the actual thickness and the actual material are given; the welding spots are simulated by adopting ACM units, the laser welding, the structural adhesive and the vibration damping adhesive adopt AREA unit models, corresponding materials are given, and all parts are connected according to actual assembly relations.
The constraint parts at the two ends of the lower edge of the vehicle door and the central part of the hinge of the vehicle door are parts with the length of 50mm and the width of 10 mm.
The normal tensile load applied by the upper and lower hinges is 300N, respectively.
b3, judging whether the rigidity of the mounting points of the upper hinge and the lower hinge at the side of the door meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through b1, and then executing b2 to b3 until the rigidity of the mounting point of the door side hinge meets the requirement.
S4, improving the rigidity of the mounting point of the hinge on the vehicle body side, wherein the rigidity is as follows:
c1, optimizing a vehicle body side hinge mounting area structure, wherein the structure comprises the steps of adding a side wall reinforcing plate material thickness, adding an upper reinforcing plate structure and a lower reinforcing plate structure of an A column or a B column, adopting proper material thickness, and adopting a self-welding box structure for the upper reinforcing plate and the lower reinforcing plate of the A column;
c2, establishing a body-in-white finite element model, and analyzing the rigidity of a hinge mounting point at the side of the body;
the method comprises the steps of fully restraining 4 door openings of a white automobile body, respectively applying a pulling load along the planes of upper and lower hinge mounting holes on the automobile body side, and calculating the normal rigidity of the upper and lower hinge mounting points on the automobile body side.
The finite element modeling of the body comprises dividing a white body into grids by adopting sheet grids, wherein the basic size of the grids is 8mm; the welding spots are simulated by adopting an ACM unit; simulating a welding line by adopting a SEAM unit; the glass cement, the structural cement and the vibration damping cement adopt an AREA unit model; and endowing corresponding attribute parameters for each part, and installing according to the actual assembly relation.
The length of the middle position of each door opening is 50mm, and the width of the middle position of each door opening is 50mm.
The applied normal pull load was 100N.
c3, judging whether the rigidity of the mounting point of the hinge on the vehicle body side meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through c1, and executing c2 to c3 until the rigidity of the mounting point of the hinge on the side of the vehicle body meets the requirement.
The improvement of the rigidity of the hinge, the mounting point of the door and the side hinge of the vehicle body not only greatly contributes to the reduction of the sinking amount; the other performance of the vehicle door is improved well, and the achievement of other performance indexes of the vehicle door can be ensured to a certain extent.
Analysis of full-equipment door sag, comprising:
s5, establishing a full-equipment door belt body finite element model, and carrying out dead weight sinking analysis on the door, wherein the method specifically comprises the following steps of:
d1, establishing a full-equipment finite element model of the vehicle door: the method comprises the steps of modeling a door metal plate, modeling a door inner ornament and a door outer ornament, and connecting according to an actual assembly relation; adjusting the mass and the mass center of the finite element model to enable the mass and the actual mass of the finite element model to be consistent;
the modeling of the inner and outer decorations comprises that the inner and outer decorations are meshed by adopting sheet grids, and the grid reference is 5mm; dividing different material thickness areas into different components by adopting a modeling mode of different thicknesses, and endowing response material thickness; the buckle for connecting the guard plate and the metal plate is simulated by adopting a CRUSH unit and endows the response direction with rigidity parameters, and the rigidity parameters are obtained through experiments.
d2, establishing a local vehicle body finite element model, wherein the vehicle body model must contain a complete vehicle door opening, and connecting a full-equipment vehicle door to a vehicle body through a hinge;
d3, carrying out dead weight sinking analysis of the vehicle door, restraining all degrees of freedom of the vehicle body interception part, restraining Y-direction degrees of freedom of the vehicle door lock, and applying 1G gravity;
and d4, reading the dead weight sinking amount of the vehicle door, judging whether the sinking amount meets the requirement, taking the sinking amount as a pre-adjustment target of the vehicle door of the welding workshop if the sinking amount meets the requirement, and executing one or more of the S1, the S2, the S3 and the S4 to perform structural optimization until the sinking amount meets the requirement if the sinking amount does not meet the requirement.
And thirdly, if the sinking amount meets the requirement, performing formal data distribution on the vehicle door, the hinge and the vehicle body.
In summary, the following effects can be achieved by the above embodiments of the present application:
1) In the past, after the real vehicle is installed, the sinking problem occurs, and the problem is solved; the application can identify and avoid the risk of insufficient sinking rigidity in the digital-analog design stage of the vehicle door, save development period and cost and improve the one-time design success rate of vehicle door product development;
2) In the past, the sinking problem still occurs in the subsequent real vehicles because the risk points cannot be identified through single-dimensional vertical rigidity calculation; according to the application, simulation analysis is carried out from a plurality of factors influencing the sinking of the vehicle door, and on the premise that the plurality of factors meet the performance, sinking analysis is carried out, so that no sinking problem of the subsequent real vehicle can be ensured;
3) After sinking problems occur in the conventional vehicle model, carrying out optimization trial calculation on the structure, and searching an optimization direction; the application provides the optimization direction of each dimension, can be used as the design direction of the vehicle door avoidance problem, provides guiding advice for the design, and saves the development period and the cost of the vehicle body;
4) The analysis method adopts the door sinking amount calculated by the full-equipment door, has high precision, can be used as a target value of the pre-adjustment amount of the welding workshop door, and avoids the inaccuracy of the manual estimation of the pre-adjustment amount by a designer;
5) The rigidity of the hinge, the rigidity of the mounting point of the door and the side hinge of the vehicle body are improved, so that the method has great contribution to reducing the sinking amount; the other performance of the vehicle door is improved well, and the achievement of other performance indexes of the vehicle door can be ensured to a certain extent.
Example two
Referring to fig. 8, an analysis device for avoiding sinking of a door of a passenger car includes:
the acquisition module is used for acquiring initial design data of the vehicle door, the hinge and the vehicle body;
the analysis module is used for carrying out optimization analysis on main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
and the data issuing module is used for issuing formal data of the vehicle door, the hinge and the vehicle body if the sinking amount meets the requirement.
Example III
Fig. 9 is a block diagram of a terminal according to an embodiment of the present application, and the terminal may be a terminal according to the above embodiment. The terminal may be a portable mobile terminal such as: smart phone, tablet computer. Terminals may also be referred to by other names, user equipment, portable terminals, etc.
Generally, the terminal 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 an analysis method of evading passenger vehicle door dip provided in the present application.
In some embodiments, the terminal 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 limiting of the 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; in other embodiments, the touch display screen 305 may be at least two, respectively disposed on different surfaces of the terminal 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. 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.
The audio circuit 307 is used to provide an audio interface between the user and the terminal. 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 can be respectively arranged at different parts of the terminal. 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 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. 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.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or may employ a different arrangement of components.
Example IV
In an exemplary embodiment, there is also provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements an analysis method of evading sinking of a door of a passenger car as provided by 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 application 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 above apparatus to perform the above method of analysis for avoiding passenger vehicle door sag.
Although embodiments of the present application 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 application. Additional modifications will readily occur to those skilled in the art. Therefore, the application 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 (11)
1. An analysis method for avoiding sinking of a passenger car door is characterized by comprising the following steps:
step one, obtaining initial design data of a vehicle door, a hinge and a vehicle body;
optimizing and analyzing main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
and thirdly, if the sinking amount meets the requirement, performing formal data distribution on the vehicle door, the hinge and the vehicle body.
2. An analysis method for avoiding sinking of a passenger car door according to claim 1, wherein in the second step, the main factors of sinking of the door include door mass, hinge self rigidity, door side hinge mounting point rigidity and body side hinge mounting point rigidity.
3. The method for analyzing the door sag of the passenger car according to claim 2, wherein the specific method of the second step is as follows:
carrying out optimization analysis on main influence factors of vehicle door sinking, wherein the optimization analysis comprises the following steps:
s1, reducing the quality of a vehicle door;
s2, improving the rigidity of the hinge;
s3, improving the rigidity of the mounting point of the hinge at the side of the vehicle door;
s4, improving the rigidity of the mounting point of the hinge on the vehicle body side;
analysis of full-equipment door sag, comprising:
s5, establishing a full-equipment door belt body finite element model, and carrying out dead weight sinking analysis on the door.
4. An analysis method for avoiding sinking of a door of a passenger car according to claim 3, wherein the specific method of step S1 is as follows:
the quality of the vehicle door is reduced by reducing the material thickness of the outer plate, the outer windowsill reinforcing plate, the window frame reinforcing plate, the door lock reinforcing plate, the outer handle reinforcing plate and the anti-collision beam.
5. An analysis method for avoiding sinking of a door of a passenger car according to claim 3, wherein the specific method of step S2 is as follows:
a1, optimizing hinge arrangement and a hinge structure, wherein the hinge arrangement and the hinge structure comprise increasing the hinge spacing, increasing the hinge contact area and increasing the hinge base material thickness;
a2, establishing a hinge finite element model, and analyzing the rigidity of the hinge;
the hinge base is fully restrained, the rigid unit is connected with the fixing hole of the hinge arm, the central point of the rigid unit is a door lock meshing point, a load in the Z direction is applied to the meshing point, and the rigidity of the hinge is calculated;
a3, judging whether the rigidity of the hinge meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through the a1, and executing the a2 to the a3 until the rigidity of the hinge meets the requirement.
6. An analysis method for avoiding sinking of a door of a passenger car according to claim 3, wherein the specific method of step S3 is as follows:
b1, optimizing a door side hinge installation area structure, wherein the structure comprises the steps of increasing the material thickness of a door inner plate in a hinge installation area, increasing the thickness of an upper hinge reinforcing plate material and a lower hinge reinforcing plate material, enhancing the structural characteristics of reinforcing ribs of the upper hinge reinforcing plate and the lower hinge reinforcing plate, increasing the structure of an upper nut plate and a lower nut plate at a hinge installation position and adjusting the welding spot density of the hinge reinforcing plate;
b2, establishing a door finite element model, and analyzing the rigidity of a door side hinge mounting point;
the method comprises the steps of removing the rigidity of an upper hinge mounting point, removing the upper hinge, fully restraining the lower hinge, a door lock, two ends of the lower edge of a vehicle door and the central part of the vehicle door hinge, applying a pulling load along the plane of an upper hinge mounting hole, and calculating the normal rigidity of the upper hinge mounting point;
the rigidity of the mounting point of the lower hinge is removed, the lower hinge is completely restrained at the upper hinge, the door lock, the two ends of the lower edge of the door and the central part of the door hinge, a pulling load is applied along the plane of the mounting hole of the lower hinge, and the normal rigidity of the mounting point of the lower hinge is calculated;
b3, judging whether the rigidity of the mounting points of the upper hinge and the lower hinge at the side of the door meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through b1, and then executing b2 to b3 until the rigidity of the mounting point of the door side hinge meets the requirement.
7. An analysis method for avoiding sinking of a door of a passenger car according to claim 3, wherein the specific method of step S4 is as follows:
c1, optimizing a vehicle body side hinge mounting area structure, wherein the structure comprises the steps of adding a side wall reinforcing plate material thickness, adding an upper reinforcing plate structure and a lower reinforcing plate structure of an A column or a B column, adopting proper material thickness, and adopting a self-welding box structure for the upper reinforcing plate and the lower reinforcing plate of the A column;
c2, establishing a body-in-white finite element model, and analyzing the rigidity of a hinge mounting point at the side of the body;
the method comprises the steps of fully restraining 4 door openings of a white automobile body, respectively applying a pulling load along the plane where the upper hinge mounting holes and the lower hinge mounting holes on the automobile body side are positioned, and calculating the normal rigidity of the upper hinge mounting points and the lower hinge mounting points on the automobile body side;
c3, judging whether the rigidity of the mounting point of the hinge on the vehicle body side meets the requirement, and if so, executing the step S5; if the requirement is not met, carrying out structural optimization through c1, and executing c2 to c3 until the rigidity of the mounting point of the hinge on the side of the vehicle body meets the requirement.
8. An analysis method for avoiding sinking of a door of a passenger car according to claim 3, wherein the specific method of step S5 is as follows:
d1, establishing a full-equipment finite element model of the vehicle door: the method comprises the steps of modeling a door metal plate, modeling a door inner ornament and a door outer ornament, and connecting according to an actual assembly relation; adjusting the mass and the mass center of the finite element model to enable the mass and the actual mass of the finite element model to be consistent;
d2, establishing a local vehicle body finite element model, wherein the vehicle body model must contain a complete vehicle door opening, and connecting a full-equipment vehicle door to a vehicle body through a hinge;
d3, carrying out dead weight sinking analysis of the vehicle door, restraining all degrees of freedom of the vehicle body interception part, restraining Y-direction degrees of freedom of the vehicle door lock, and applying 1G gravity;
and d4, reading the dead weight sinking amount of the vehicle door, judging whether the sinking amount meets the requirement, taking the sinking amount as a pre-adjustment target of the vehicle door of the welding workshop if the sinking amount meets the requirement, and executing one or more of the S1, the S2, the S3 and the S4 to perform structural optimization until the sinking amount meets the requirement if the sinking amount does not meet the requirement.
9. An analysis device for avoiding sinking of a door of a passenger car, comprising:
the acquisition module is used for acquiring initial design data of the vehicle door, the hinge and the vehicle body;
the analysis module is used for carrying out optimization analysis on main influence factors of the sinking of the vehicle door and analyzing the sinking of the vehicle door of the whole equipment;
and the data issuing module is used for issuing formal data of the vehicle door, the hinge and the vehicle body if the sinking amount meets the requirement.
10. 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:
an analysis method of avoiding sinking of doors of a passenger car as claimed in any one of claims 1 to 8 is performed.
11. 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 an analysis method of avoiding passenger car door sagging as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310819027.2A CN117010235A (en) | 2023-07-05 | 2023-07-05 | Analysis method, device, terminal and storage medium for avoiding sinking of doors of passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310819027.2A CN117010235A (en) | 2023-07-05 | 2023-07-05 | Analysis method, device, terminal and storage medium for avoiding sinking of doors of passenger car |
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| CN117010235A true CN117010235A (en) | 2023-11-07 |
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| CN202310819027.2A Pending CN117010235A (en) | 2023-07-05 | 2023-07-05 | Analysis method, device, terminal and storage medium for avoiding sinking of doors of passenger car |
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