摘要
以大型薄壳塑件显示器后壳为研究对象,在壳体刚度变形理论分析的基础上,结合试验模态所得到的显示器后壳前二十阶振型图,分析了显示器后壳的振动及翘曲变形并提出相应的结构修改方案。解决了以往由于有限元模拟时存在的很多理论假设和边界条件而难以对壳体塑件的刚度及强度进行准确分析的问题。为对其结构设计作正确修改,减少结构的不合理性,提高塑件刚度等作重要指导。
Abstract
On basis of theoretical analysis of a shell stiffness and deformation, vibration and warping deformation of back cover of a computer display were analyzed with modal shapes of the first 20 modes, a revision proposal was given. It could solve the problem that it was difficult to perform accurate analysis of stiffness and strength of a shell plastic part due to finite element simulations with many theoretical assumptions and boundary conditions. The proposal could provide an important guide for correcting its structural design to reduce its unreasonableness and increase its stiffness.
关键词
模态分析 /
刚度 /
模态振型 /
薄壳塑件
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Key words
modal analysis /
stiffness /
modal shape /
thin-shell plastic part
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骆志高;李 举;王 祥;王忙忙.
基于试验模态分析的薄壳塑件刚度研究[J]. 振动与冲击, 2009, 28(4): 185-187
LUO Zhi-gao;LI Ju;WANG Xiang;WANG Mang-mang.
Stiffness of a thin-shel-l plastic part based on modal analysis[J]. Journal of Vibration and Shock, 2009, 28(4): 185-187
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脚注
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