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Design method of automobile control arm

A technology of automotive control arm and design method, which is applied in computing, special data processing applications, instruments, etc., can solve problems such as high development cost, unreasonable design, and control arm that does not meet the design requirements, so as to shorten the development cycle and reduce R&D The effect of fees

Active Publication Date: 2012-07-11
CHERY AUTOMOBILE CO LTD
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  • Application Information

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Problems solved by technology

[0005] 1. If the design basis of the control arm of the benchmark vehicle or platform vehicle is unreasonable, it will lead to unreasonable subsequent design accordingly, resulting in the designed control arm not meeting the design requirements;
[0006] 2. The newly developed model and the benchmark car or platform car cannot be exactly the same in terms of weight and dynamic performance. It does not guarantee that the control arm can meet the performance requirements of newly developed models;
[0007] 3. Repeated experimental verification and modification in the existing technology will take a lot of time and workload, and the development cost is high. However, the current automotive industry is very competitive, and it is very important to control the design cycle and design cost for the automotive industry

Method used

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  • Design method of automobile control arm
  • Design method of automobile control arm
  • Design method of automobile control arm

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Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a method for designing an automobile control arm, see figure 1 , the method flow is as follows:

[0048] 101: According to the road spectrum load at the control arm of the benchmark vehicle or platform vehicle of the developed model and the dynamics simulation analysis of the developed model, the key stress working conditions are obtained;

[0049] 102: Establish the finite element body mesh envelope model of the control arm of the developed vehicle model;

[0050] 103: Perform topology optimization on the finite element volume mesh envelope model established in step 102 according to the key stress conditions and predetermined performance requirements obtained in step 101, and obtain a material distribution diagram of the control arm according to the topology optimization result;

[0051] 104: Perform conceptual design according to the material distribution diagram of the control arm obtained in step 103 to obtain a geometric model of the contr...

Embodiment 2

[0056] Embodiment two

[0057] This embodiment provides a method for designing an automobile control arm, see figure 2 , the method flow provided by this embodiment is specifically as follows:

[0058] 201: According to the road spectrum load at the control arm of the benchmark car or platform car of the developed model and the dynamics simulation analysis of the developed model, the key stress working conditions are obtained; among them, see image 3 , the specific process of step 201 is as follows:

[0059] 2011: Determine the benchmark car or platform car for the development model, and define the suspension system performance parameters of the development model, such as mode, stiffness, handling performance, etc., and decompose the performance into chassis components, such as the control arm place;

[0060] 2012: Obtain the road spectrum information of the benchmarking vehicle or platform vehicle of the developed model, and obtain the road spectrum load of the whole veh...

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Abstract

The invention discloses a design method of an automobile control arm, which belongs to the technical field of automobile design. The method comprises the steps of obtaining key stressed working conditions according to the road spectra load in a control arm position of benchmarking vehicle or platform vehicle of a developed vehicle type and dynamics simulation analysis of the developed vehicle type, establishing a finite element grid envelopment model of the control arm of the developed vehicle type, performing topological optimization on the finite element grid envelopment model according to the key stressed working conditions and preset performance requirement, obtaining a control arm material distribution drawing according to topological optimization results, performing conceptual design according to the control arm material distribution drawing, so as to obtain a control arm geometrical model, obtaining a finite element model meeting design requirements according to the control arm geometrical model, and performing structure design according to the finite element model meeting the design requirements so as to obtain final design. The automobile control arm meeting the design requirements is obtained through CAE simulation, the development cycle of the control arm is effectively shortened, and the research and development cost is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile design, in particular to a method for designing an automobile control arm. Background technique [0002] Suspension system is an important part of the car, which has an important impact on the ride comfort and stability of the car. Among them, the control arm (also known as the swing arm) is the guiding and force-transmitting element of the suspension system, which transmits various forces acting on the wheel to the body, and at the same time ensures that the wheel moves according to a certain trajectory. The control arm connects the wheel and the vehicle body together through a ball joint or a bushing. The connection method of the control arm should ensure that it has sufficient rigidity, strength and service life. Correspondingly, the stiffness, strength and service life of the control arm are taken as its Key performance requirements at design time. [0003] In the prior art, the design of...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王洪斌瞿元张林波
Owner CHERY AUTOMOBILE CO LTD
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