Structure optimization design method for automobile damping board

A technology of optimized design and damping plate, applied in the direction of vehicle components, transportation and packaging, to achieve the effect of overall shape optimization and lightweight design

Active Publication Date: 2015-07-22
SAIC-GM-WULING AUTOMOBILE CO LTD
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Problems solved by technology

Traditional automotive damping plate design mainly relies on the experience of the designer. In the existing technology, the NVH performance simulation check of the damping plate after the structural digital model design is generally carried out. If it is not satisfied, further optimization is carried out. Although there are also literature The position and area of ​​the damping are optimized through the analysis of the strain energy or the contribution analysis, but there is no technology on the optimal design of the material and thickness of the damping plate.

Method used

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  • Structure optimization design method for automobile damping board
  • Structure optimization design method for automobile damping board
  • Structure optimization design method for automobile damping board

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Embodiment Construction

[0026] The invention discloses a method for optimal design of an automobile damping plate structure, which comprises the following steps:

[0027] A. Establish BIW modal analysis finite element model, and establish NTF and VTF models based on Trimbody;

[0028] B. Including the step of calculating the sheet metal modal and the step of calculating the sound power of the sheet metal, in the step of calculating the sheet metal modal, calculate and output the superimposed cloud diagram of the sheet metal modal strain energy, then determine the layout range of the damping plate, and determine the damping material 1 , thickness 1; in the step of calculating sheet metal sound power, calculate sheet metal sound power loss, then determine damping plate material 2, thickness 2;

[0029] C. According to the low-frequency sheet metal modal strain energy superposition cloud image and the mid-frequency sheet metal sound power loss results, the damping plate material and thickness are prelim...

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Abstract

The invention provides a structure optimization design method for an automobile damping board. The structure optimization design method has the advantages that through strain energy overlay analysis and parallel coupling mode design of sound power losses of the damping board and based on light weight option design of cost, performance and the process, the material, the thickness and the arrangement of the damping board are designed, overall shape optimization is conducted on a metal plate and the damping board, and the light weight design of the damping board is achieved on the premise that the NVH performance is achieved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a structure optimization design method of an automobile damping plate. Background technique [0002] The main function of automobile damping plate is to reduce vibration and noise. Traditional automotive damping plate design mainly relies on the experience of the designer. In the existing technology, the NVH performance simulation check of the damping plate after the structural digital model design is generally carried out. If it is not satisfied, further optimization is carried out. Although there are also literature The position and area of ​​the damping are optimized through the analysis of the strain energy or the contribution analysis, but there is no technology on the optimal design of the material and thickness of the damping plate. Contents of the invention [0003] In order to solve the problems in the prior art, the invention provides a structural optimization design metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/08
CPCB60R13/08
Inventor 武敬伟胡朝辉何智成郝耀东罗慧娟丁晓明付广
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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