CN118114377A - Simulation analysis method and device for strength performance of cast aluminum damping tower, terminal and storage medium - Google Patents
Simulation analysis method and device for strength performance of cast aluminum damping tower, terminal and storage medium Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 80
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 78
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000004458 analytical method Methods 0.000 title claims abstract description 58
- 238000004088 simulation Methods 0.000 title claims abstract description 33
- 238000003860 storage Methods 0.000 title claims abstract description 19
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- 238000013461 design Methods 0.000 abstract description 10
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 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
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- 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]
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- G—PHYSICS
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- 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
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Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a simulation analysis method, a simulation analysis device, a simulation analysis terminal and a simulation analysis storage medium for strength performance of an aluminum casting damping tower. The method comprises the following steps: establishing a finite element model of the cast aluminum damping tower, and carrying out grid division on the cast aluminum damping tower; setting cast aluminum damping tower materials; building a vehicle body system model; establishing an intensity working condition; and (3) carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing working conditions if the strength performance does not meet the requirement until the strength performance meets the requirement. The invention adopts the finite element means to evaluate the strength performance of the cast aluminum damping tower in the design stage, is suitable for the strength simulation analysis of the cast aluminum damping towers with different structures of different vehicle types, greatly improves the development efficiency, and can also shorten the development period and reduce the development cost.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a simulation analysis method, a simulation analysis device, a simulation analysis terminal and a simulation analysis storage medium for strength performance of an aluminum casting damping tower.
Background
The rapid development of the automobile industry brings convenience to the travel of people and also brings pollution to the environment, the energy conservation and emission reduction become the difficult problems of the development of the automobile industry, and the light weight technology is the best mode for solving the problem. The damping tower is one of important parts of an automobile, is a key part for connecting a damper and an automobile body, and is also converted into a single aluminum alloy die casting from the traditional welding of a plurality of stamping sheet metal parts along with the increasing application of aluminum alloy materials to the automobile body. The density of the aluminum alloy is about 1/3 of that of steel, the corrosion resistance is good, the number of stamping parts is large, the structure is complex, the mass is large, the weight reduction of the shock absorber assembly can be ensured to be about 50% by using the cast aluminum material, and the light weight level of the automobile is obviously improved. In the running process of an automobile on a road surface, the damping tower mainly bears the weight of an upper automobile body and impact load transmitted from the road surface through a damping support of a suspension, and the bearing load is relatively large, so that the performance requirement on the damping tower is relatively high, and whether the strength performance of the cast aluminum damping tower meets the use requirement of a user is an extremely critical index. The trend of replacing steel parts with aluminum alloy to become lightweight car bodies is that developing aluminum alloy structural parts suitable for die casting processes mainly depends on experience, and repeated tests are performed simultaneously, so that the design efficiency is low, the lightweight effect is poor, and a method for efficiently identifying whether the strength performance of an aluminum alloy damping tower meets the use requirement in a redesign stage is very needed. Along with the development of finite element technology, part design forms a complete theoretical system, and whether the structure of the part meets the use requirement can be rapidly identified by adopting a finite element analysis method according to the actual use condition aiming at the structure of the part, and if the structure does not meet the use requirement, structural optimization, material thickness optimization or size optimization and the like can be carried out by combining the analysis result.
Disclosure of Invention
In order to solve the problems, the invention provides a simulation analysis method, a device, a terminal and a storage medium for strength performance of an aluminum casting damping tower, which adopts a finite element method to evaluate the strength performance of the aluminum casting damping tower in a design stage, is suitable for the simulation analysis of the strength of the aluminum casting damping tower with different structures of different vehicle types, greatly improves the development efficiency, shortens the development period and reduces the development cost.
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 simulating and analyzing strength performance of a cast aluminum damping tower, including the following steps:
Establishing a finite element model of the cast aluminum damping tower, and carrying out grid division on the cast aluminum damping tower;
Setting cast aluminum damping tower materials;
Building a vehicle body system model;
Establishing an intensity working condition;
And (3) carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing working conditions if the strength performance does not meet the requirement until the strength performance meets the requirement.
Further, finite element grid data are divided according to the three-dimensional data, and tetrahedral grid division is adopted for the cast aluminum damping tower.
Further, the concrete method for carrying out grid division on the cast aluminum damping tower comprises the following steps:
the method for processing the geometry of the damping tower maintains the original geometry;
Positioning the grid size by 2mm, and adjusting the grid type to be triangular;
Performing quality inspection on the divided surface grids by adopting a grid quality inspection method, and modifying or re-dividing unqualified grids;
The drawn surface grid is ensured to be of a closed structure, free edges do not exist, and otherwise, the entity grid cannot be generated.
Further, the concrete method for setting the cast aluminum damping tower material comprises the following steps:
The damping tower material is cast aluminum AlSi10MnMg with Young's modulus of 70580MPa, yield strength of 127MPa and density of 2.7g/cm 3.
Further, the concrete method for constructing the vehicle body system model comprises the following steps:
And (3) intercepting a front vehicle body model, connecting the damping tower and the vehicle body part in a mode of gluing and riveting, and replacing a riveting point SPR by adopting a mode of simulating welding spots.
Further, the strength working conditions are specifically as follows:
First working condition: vertical impact; the second working condition is as follows: turning; third working condition: reversing and braking; fourth working condition: maximum braking; fifth working condition: maximum acceleration; sixth working condition: side impact; seventh operating mode: advancing a handle brake; eighth working condition: reversing the handle brake; ninth working condition: curb impact; tenth working condition: jump vertically 3g.
Further, the loading position of the first working condition is the center of the wheels at two sides; the loading position of the second working condition is the left wheel center; the loading position of the third working condition is the center of the wheels at two sides; the loading position of the fourth working condition is the wheel centers at two sides; the loading position of the fifth working condition is the wheel centers at two sides; the loading position of the sixth working condition is the left wheel center; the loading position of the seventh working condition is the center of the wheels at two sides; the loading position of the eighth working condition is the wheel centers at two sides; the loading position of the ninth working condition is the left wheel center; the loading position of the tenth working condition is the center of the wheels at two sides.
Further, the specific method for performing finite element analysis is as follows:
And loading the corresponding positions according to working conditions, then carrying out load decomposition to obtain forces and moments in three directions of XYZ (X, Y) born by the connecting points of the chassis and the vehicle body, applying the forces and the moments to corresponding hard points of the vehicle body, carrying out finite element analysis, outputting the strength conditions of the cast aluminum damping tower and the peripheral sheet metal parts, and judging whether the strength of the cast aluminum damping tower and the peripheral sheet metal parts meets the requirements.
In a second aspect, an embodiment of the present invention further provides a simulation analysis apparatus for strength performance of a cast aluminum damping tower, including:
The building model module is used for building a finite element model of the cast aluminum damping tower and carrying out grid division on the cast aluminum damping tower;
the setting module is used for setting cast aluminum damping tower materials;
the building module is used for building a vehicle body system model;
the working condition building module is used for building strength working conditions;
And the analysis module is used for carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing the working condition if the strength performance does not meet the requirement until the requirement is met.
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:
1) The invention adopts the finite element method to evaluate the strength performance of the cast aluminum damping tower, the finite element analysis load mainly comes from XYZ forces and moments in all directions decomposed from typical working conditions, and the strength performance of the cast aluminum damping tower can be evaluated by integrating multi-directional stress to be closer to actual use conditions;
2) The method adopts the finite element means to evaluate the strength performance of the cast aluminum damping tower in the design stage, is suitable for the strength simulation analysis of the cast aluminum damping tower with different structures of different vehicle types, greatly improves the development efficiency, and can shorten the development period and reduce the development cost;
3) The invention not only verifies the strength performance of the damping tower, but also can provide guiding suggestions for design and process, and improves the design efficiency while ensuring the reliability of structural design.
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 schematic flow chart of a simulation analysis method for strength performance of an aluminum casting damping tower according to the present invention;
FIG. 2 is a schematic illustration of a shock tower grid;
FIG. 3 is a schematic illustration of a vehicle body system model;
FIG. 4 is a schematic illustration of a rivet point;
FIG. 5 is a schematic diagram of a two-layer rivet joint simulation;
FIG. 6 is a schematic diagram of a simulation of a three-layer rivet joint;
FIG. 7 is a schematic structural diagram of a simulation analysis device for strength performance of an aluminum casting damping tower according to the present invention;
Fig. 8 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 simulating and analyzing strength performance of an aluminum casting damping tower according to an embodiment of the present invention, where the method may be implemented by an apparatus for simulating and analyzing strength performance of an aluminum casting damping tower according to an embodiment of the present invention, and the apparatus may be implemented in software and/or hardware.
A simulation analysis method for strength performance of a cast aluminum damping tower comprises the following steps:
S1, referring to FIG. 2, establishing a finite element model of the cast aluminum damping tower, and carrying out grid division on the cast aluminum damping tower;
Dividing finite element grid data according to three-dimensional data, and dividing a cast aluminum damping tower by adopting tetrahedral grids, wherein the concrete method for dividing the grids of the cast aluminum damping tower is as follows:
1) The method for processing the geometry of the damping tower maintains the original geometry;
2) Firstly, a picture grid and then a volume grid are generated: positioning the grid size by 2mm by adopting a surface command under a automesh module under a HyperWorks D menu, and adjusting the grid type to trias (triangle);
3) Adopting a grid quality inspection method as shown in table 1, performing quality inspection on the divided surface grids, and modifying or re-dividing unqualified grids;
TABLE 1 grid quality requirement
4) Firstly, the drawn surface grid is ensured to be of a closed structure, free edges cannot exist, and otherwise, solid grids cannot be generated. And adopting tetramesh commands under the 3D module, selecting a combs part for generating the entity grid, and clicking the mesh command to generate the entity grid.
S2, setting cast aluminum damping tower materials;
the damping tower material is cast aluminum materials AlSi10MnMg, the material properties of each cast aluminum material are different, and the test is carried out by adopting the cast aluminum material parameters of the invention, namely, the stress strain curve of the material provided by George Fisher metal forming technology (Suzhou) limited company, the Young modulus of the material is 70580Mpa, the yield strength is 127Mpa, and the density is 2.7g/cm 3.
S3, building a vehicle body system model;
the front car body model is intercepted, the shock absorber and the car body parts are connected, as shown in fig. 3, mainly through the mode of gluing and riveting, the gluing adopts structural glue, the riveting belongs to cold connection, and because of the current research condition, the mode of simulating welding spots is mainly adopted to replace riveting points SPR, as shown in fig. 4, 5 and 6.
S4, establishing an intensity working condition;
The calculated load of the strength of the damping tower is obtained by decomposing a typical limit working condition load, and the limit working condition is shown in a table 2. The strength performance of the sheet metal part of the whole automobile is evaluated under the limit working conditions, 10 working conditions are all limit working conditions in the running process of the automobile, and only 10 working condition strength performances are met, the shock absorber structure meets the use requirement.
TABLE 2 limit calculation conditions
S5, finite element analysis is carried out, if the strength performance meets the requirement, the analysis is finished, and if the strength performance does not meet the requirement, the working condition is reestablished until the requirement is met.
In the running process of the automobile, the excitation load from the road surface is transmitted to the front auxiliary frame and the rear auxiliary frame through the tires, and the auxiliary frames are transmitted to the automobile body through chassis connecting points, so that the load transmitted from the ground to the automobile body parts can only be converted through load conversion, and the load on the ground is converted into the load of the automobile body connecting points to analyze the strength of the automobile body parts.
And loading the corresponding positions according to working conditions, then carrying out load decomposition to obtain forces and moments in three directions of XYZ (X, Y) born by the connecting points of the chassis and the vehicle body, applying the forces and the moments to corresponding hard points of the vehicle body, carrying out finite element analysis, outputting the strength conditions of the cast aluminum damping tower and the peripheral sheet metal parts, and judging whether the strength of the cast aluminum damping tower and the peripheral sheet metal parts meets the requirements.
In conclusion, the performance condition of the shock absorber can be accurately predicted through the finite element method in the early development stage of the cast aluminum shock absorber, reasonable design and space optimization can be realized, meanwhile, the phenomenon that the strength of the shock absorber is unqualified in the actual vehicle use process in the later stage is avoided, risks can be identified in advance through the finite element method, the development period is shortened, the development cost is reduced, and the use performance and brand quality evaluation of users are improved.
Example two
Referring to fig. 7, a simulation analysis device for strength performance of a cast aluminum damping tower includes:
The building model module is used for building a finite element model of the cast aluminum damping tower and carrying out grid division on the cast aluminum damping tower;
the setting module is used for setting cast aluminum damping tower materials;
the building module is used for building a vehicle body system model;
the working condition building module is used for building strength working conditions;
And the analysis module is used for carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing the working condition if the strength performance does not meet the requirement until the requirement is met.
Example III
Fig. 8 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), PLA (Programmable Logic Array ). Processor 301 may also include a main processor, which is a processor for processing data in an awake state, also referred to as 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 cast aluminum shock tower strength performance simulation analysis method 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 circuit 304 may further include NFC (NEAR FIELD Communication) related circuits, which is not limited by the present 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 operative to locate the current geographic location of the terminal for 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 chinese beidou system.
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.
Those skilled in the art will appreciate that the structure shown in fig. 8 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, a computer readable storage medium is also provided, on which a computer program is stored, which when executed by a processor implements a method for simulating analysis of strength performance of an aluminum cast shock tower 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 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 cast aluminum shock tower strength performance simulation analysis method 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 (11)
1. The simulation analysis method for the strength performance of the cast aluminum damping tower is characterized by comprising the following steps of:
Establishing a finite element model of the cast aluminum damping tower, and carrying out grid division on the cast aluminum damping tower;
Setting cast aluminum damping tower materials;
Building a vehicle body system model;
Establishing an intensity working condition;
And (3) carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing working conditions if the strength performance does not meet the requirement until the strength performance meets the requirement.
2. The method for simulating analysis of strength performance of an aluminum casting vibration damping tower according to claim 1, wherein the aluminum casting vibration damping tower is classified into tetrahedral grids according to finite element grid data of three-dimensional data.
3. The simulation analysis method for the strength performance of the cast aluminum damping tower according to claim 2, wherein the concrete method for meshing the cast aluminum damping tower is as follows:
the method for processing the geometry of the damping tower maintains the original geometry;
Positioning the grid size by 2mm, and adjusting the grid type to be triangular;
Performing quality inspection on the divided surface grids by adopting a grid quality inspection method, and modifying or re-dividing unqualified grids;
The drawn surface grid is ensured to be of a closed structure, free edges do not exist, and otherwise, the entity grid cannot be generated.
4. The simulation analysis method for the strength performance of the cast aluminum damping tower according to claim 1, wherein the concrete method for setting the cast aluminum damping tower material is as follows:
The damping tower material is cast aluminum AlSi10MnMg with Young's modulus of 70580MPa, yield strength of 127MPa and density of 2.7g/cm 3.
5. The simulation analysis method for the strength performance of the cast aluminum damping tower according to claim 1, wherein the concrete method for constructing the vehicle body system model is as follows:
And (3) intercepting a front vehicle body model, connecting the damping tower and the vehicle body part in a mode of gluing and riveting, and replacing a riveting point SPR by adopting a mode of simulating welding spots.
6. The simulation analysis method for strength performance of an aluminum casting damping tower according to claim 1, wherein the strength working conditions are as follows:
First working condition: vertical impact; the second working condition is as follows: turning; third working condition: reversing and braking; fourth working condition: maximum braking; fifth working condition: maximum acceleration; sixth working condition: side impact; seventh operating mode: advancing a handle brake; eighth working condition: reversing the handle brake; ninth working condition: curb impact; tenth working condition: jump vertically 3g.
7. The simulation analysis method for the strength performance of the cast aluminum damping tower according to claim 6, wherein the loading position of the first working condition is the center of wheels at two sides; the loading position of the second working condition is the left wheel center; the loading position of the third working condition is the center of the wheels at two sides; the loading position of the fourth working condition is the wheel centers at two sides; the loading position of the fifth working condition is the wheel centers at two sides; the loading position of the sixth working condition is the left wheel center; the loading position of the seventh working condition is the center of the wheels at two sides; the loading position of the eighth working condition is the wheel centers at two sides; the loading position of the ninth working condition is the left wheel center; the loading position of the tenth working condition is the center of the wheels at two sides.
8. The simulation analysis method for the strength performance of the cast aluminum damping tower according to claim 7, wherein the specific method for performing finite element analysis is as follows:
And loading the corresponding positions according to working conditions, then carrying out load decomposition to obtain forces and moments in three directions of XYZ (X, Y) born by the connecting points of the chassis and the vehicle body, applying the forces and the moments to corresponding hard points of the vehicle body, carrying out finite element analysis, outputting the strength conditions of the cast aluminum damping tower and the peripheral sheet metal parts, and judging whether the strength of the cast aluminum damping tower and the peripheral sheet metal parts meets the requirements.
9. The utility model provides a cast aluminum shock attenuation tower intensity performance simulation analysis device which characterized in that includes:
The building model module is used for building a finite element model of the cast aluminum damping tower and carrying out grid division on the cast aluminum damping tower;
the setting module is used for setting cast aluminum damping tower materials;
the building module is used for building a vehicle body system model;
the working condition building module is used for building strength working conditions;
And the analysis module is used for carrying out finite element analysis, ending the analysis if the strength performance meets the requirement, and reestablishing the working condition if the strength performance does not meet the requirement until the requirement is met.
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:
a method of performing a simulation analysis of the strength properties of a cast aluminum shock absorber as defined in any one of claims 1 to 8.
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 a cast aluminum shock tower strength performance simulation analysis method according to any one of claims 1 to 8.
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| CN202410303799.5A CN118114377A (en) | 2024-03-18 | 2024-03-18 | Simulation analysis method and device for strength performance of cast aluminum damping tower, terminal and storage medium |
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| CN202410303799.5A CN118114377A (en) | 2024-03-18 | 2024-03-18 | Simulation analysis method and device for strength performance of cast aluminum damping tower, terminal and storage medium |
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