TSU2-m望远镜叉架的模态优化设计

Model optimized design of TSU 2-m telescope's fork

这里以美国田纳西州立大学自行设计和制造的TSU2-m望远镜的叉架部分作为研究对象,根据原始设计中提到的模态分析,应用模态分析和优化设计的方法,以提高叉架部分的一阶共振频率为优化目标,以叉架部分的结构参数为设计变量,约束条件为叉架的总重量保持不变。经过有限元软件的优化模块计算,得到了一组更合理的结构参数组合,使得叉架的一阶共振频率提高了15%,更不易发生共振。

The research＇ s object is TSU2 - m telescope＇ s fork that was designed and Tennessee university, model analysis and optimized design are applied on original design, manufactured by which optimized object function is to increase fork＇ s resonance frequency, optimized design variable is fork＇ s structure parameter, and optimized condition is to keep fork＇ s weight same. A set of more reasonable structure parameter is given after calculating by FEA software＇ s optimize part, and fork is not easy to resonate because of the resonance frequency is increased 15 % .