Automobile chassis key structural member structure optimization design method

An automotive chassis, optimization design technology, applied in computing, special data processing applications, instruments, etc., can solve the problem of not finding key structural parts of automotive chassis design

Active Publication Date: 2013-02-27
BAIC GRP ORV CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although topology optimization is of great significance to structural design, in the prior art, no method has been found to design key structural parts of automobile chassis using continuum topology optimization.

Method used

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  • Automobile chassis key structural member structure optimization design method
  • Automobile chassis key structural member structure optimization design method
  • Automobile chassis key structural member structure optimization design method

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Embodiment Construction

[0046] Such as figure 1 As shown, the structural optimization design method of the key structural parts of the automobile chassis of the present invention includes:

[0047] Step 1, determine the performance index of the key structural parts of the chassis;

[0048] Step 2, establish a multi-body model of the suspension, and calculate the load of each connection point of the key structural parts of the chassis;

[0049] Step 3, establishing an initial finite element design domain suitable for the topology optimization design of key structural parts of the chassis;

[0050] Step 4, establishing a topology optimization mathematical model;

[0051] Step five, iterative solution;

[0052] Step six, obtain the topology optimization design results of the key structural parts of the chassis.

[0053] The above steps will be described in detail below.

[0054] Step 1: Determine the performance indicators of the key structural parts of the chassis.

[0055]In the process of vehic...

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Abstract

The invention relates to an automobile chassis key structural member structure optimization design method. The method comprises: step one, determining chassis key structural member performance indexes; step two, establishing a suspension multi-body model, and calculating load of each connecting point of the chassis key structural member; step three, establishing a finite element initial design domain suitable for topological optimization design of the chassis key structural member; step four, establishing a topological optimization mathematical model; step five, iteration solving; and step six, acquiring a topological optimization design result of the chassis key structural member. The automobile chassis key structural member structure optimization design method is different from traditional design methods, combines a connecting point load decomposition technology and a nonindividual body topological optimization technology, reflects design requirements in an optimized mathematical model, enables a designing scheme to meet design requirements more accurately and comprehensively, is suitable for novel chassis key structural members which are high in rigidity, strength and light weight level, and has great significance on earlier stage concept design of car chassis.

Description

technical field [0001] The invention relates to computer-aided design, in particular to a structural optimization design method for key structural parts of an automobile chassis. Background technique [0002] The key structural parts of the automobile chassis mainly include front and rear subframes, control arms, steering knuckles, trailing arms, etc. These key structural parts not only improve the ride comfort of the car, the rigidity and handling of the chassis, but also improve the convenience of assembly And design versatility, it is an important part of the current mainstream car chassis. The structural form, stiffness and strength of the key structural parts of the automobile chassis have a great influence on the durability, comfort and handling of the vehicle, and are an important basis for measuring the design level of the automobile chassis. At present, the key structural parts of automobile chassis mostly adopt the process forms of sheet metal stamping welding, hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张立玲刘明卓
Owner BAIC GRP ORV CO LTD
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