Finite Element Analysis of the Strength of an Automotive Sub-Structure
Date Issued
2005
Date
2005
Author(s)
Chang, Chia-Che
DOI
zh-TW
Abstract
The structural strength of automobiles must pass through tests due to safety concern. In order to reduce the time of tests and shorten the developing period, automakers have decided to adopt the CAE (Computer-Aided Engineering) technology to analyze the strength of automobiles.
This paper analyzes the strength of automotive sub-structures with the assistance of CAE technology. Using the finite element code, LS-DYNA, the analysis technique for the engine hood and radiator support frame has been built.
In regard to the method for building finite element model of automobiles, including the weak convertibility between CAD (Computer-Aided Design) and CAE files, the selection of mesh size, the assembly of parts, the hinge mechanism of engine hoods, and the lock-striker model.
This paper also discusses about the influence of initial penetration, usage of hourglass control and mass scaling.
Eventually, using the built finite element model, the free fall of the engine hood has been analyzed.
Subjects
電腦輔助工程(CAE)
汽車局部結構強度分析
初始穿透
沙漏控制
質量比例因子
CAE
structural strength of automobiles
initial penetration
hourglass control
mass scaling
Type
thesis