摘要
提出了实模态参数的特征曲线法及其在结构优化设计中的应用。利用多节点数值技术,绘制实频率、实模态及实频率的一阶灵敏度的曲线,可以有效地避免重频区间、密频区间及模态跳跃区间等不利于结构优化与控制的设计区间,从而寻找设计参数的优化区间,是一种结构优化设计的新方法。一个具有5自由度系统用来展示此方法的有效性及可行性。
The method of real modal parameter eigen-curve is presented in this paper,and its application in structural optimization is also provided.By using the numerical technique,the curves of real rate,real mode,and the real rate first-order sensitivity curve have been drawn to effectively avoid the design intervals which are not conducive to structural optimization and control such as the multiple-frequency interval,closed-frequency interval and jumping interval of mode,and so on.Hereby,the optimization interval of design parameter can be obtained as a new method for structural optimization design.A 5 degree-of-freedom structure system can be used to demonstrate the efficiency and feasibility of this method proposed in this paper.
出处
《长春工程学院学报（自然科学版）》
2017年第3期124-128,共5页
Journal of Changchun Institute of Technology：Natural Sciences Edition
基金
吉林省科技发展计划项目(20160101277JC)
吉林省教育厅"十二五"科学技术研究项目(2015306)
长春工程学院基金项目(320150018)
关键词
实模态参数
灵敏度
特征曲线
结构优化
real modal parameter
sensitivity
eigen-curve
structural optimization
