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A structural design method of automobile sheet metal parts based on finite elements

A technology for automotive sheet metal parts and structural design, applied in the field of automotive sheet metal structural design, can solve problems such as blind design direction, and achieve the effect of light structure weight and high performance

Active Publication Date: 2018-12-11
DFSK MOTOR LTD CHONGQING BRANCH CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a finite element-based structural design method for automobile sheet metal parts in view of the problem of blind design direction in prior art structural design methods

Method used

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  • A structural design method of automobile sheet metal parts based on finite elements
  • A structural design method of automobile sheet metal parts based on finite elements
  • A structural design method of automobile sheet metal parts based on finite elements

Examples

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Embodiment 1

[0051] see figure 1 . The invention provides a method for designing a structure of an automobile sheet metal part based on finite elements, and the method for designing includes the following steps:

[0052] S1. Define the design space and boundary conditions;

[0053] S2. The force transmission path is obtained by topology optimization;

[0054] S3. Design a conceptual model of a part according to the topology result;

[0055] S4. Verify whether the conceptual model of the part meets the performance requirements.

[0056] Step S1 comprises the following steps:

[0057] S101. Obtain design hard points and boundary conditions;

[0058] S102. defining a basic design space;

[0059] S103. Pretreatment;

[0060] S104. Calculate and obtain initial performance parameters.

[0061] In step S101, relevant input conditions given by the design department are collected, including design hard points, boundary conditions, etc. In step S102, according to the position of the surroun...

Embodiment 2

[0083] see Figure 2-Figure 5 . This embodiment provides an application of a finite element-based automobile sheet metal structure design method in the design of the automobile front sub-frame. The front subframe of the car is a sheet metal part.

[0084] According to embodiment 1, carry out the structural design of automobile front auxiliary frame according to the following steps:

[0085] S1. Define the design space and boundary conditions of the front subframe of the automobile;

[0086] S2. The transmission path of the force in the front subframe of the automobile is obtained by topology optimization;

[0087] S3. Design the conceptual model of the front subframe of the car according to the topology results.

[0088] S4. Verify whether the conceptual model of the car's front subframe meets the performance requirements.

[0089] In step S1, the following steps are included:

[0090] S101. Obtain the design hard points and boundary conditions of the front sub-frame of ...

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Abstract

The invention relates to the field of a structural design method, in particular to a structural design method of automobile sheet metal parts based on finite elements, the method comprising the following steps: S1, defining design space and boundary conditions; S2, optimizing the topology to obtain a force transmission path; S3, designing the conceptual model of the part according to the topological results. Through the design method of the automobile part structure provided by the invention, the design is carried out according to the transmission path of the force in the part, the design ideais more pertinent, the designed part can meet the performance requirements, the designed structure is light, and the performance of the part is superior to the existing part.

Description

technical field [0001] The invention relates to a structural design method, in particular to a finite element-based structural design method for automobile sheet metal parts. Background technique [0002] The parts on the car are characterized by a large number, complex structure and operating conditions. In the prior art, when the structural design of the parts on the automobile is carried out, the designer usually makes small-scale adjustments on the basis of the existing structure according to his own experience. This kind of adjustment often lacks pertinence, and the designed structure is greatly affected by the experience level of the designer, and it may even happen that the adjusted new structure cannot meet the performance requirements of the parts. Contents of the invention [0003] The object of the present invention is to provide a finite element-based structural design method for automobile sheet metal parts in order to solve the problem of blind design direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/15Y02T90/00
Inventor 李小林
Owner DFSK MOTOR LTD CHONGQING BRANCH CO
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