基于复模态的结构有限元动态模型修正理论

A STRUCTURE FEM DYNAMIC MODAL MODIFICATION BASED ON COMPLEX MODE THEORY

本文首先基于对阻尼的理解以及振动系统为实模态的一组充分必要条件 ,提出了用于复模态结构修正的恰当的阻尼模型和阻尼误差模型 ,进而结合复振型正交条件给出了修正模型及计算方法 。

In the paper a proper damping model and damping error model are presented,based on the intensive comprehension of damping and an array of sufficient and necessary conditions.Then the modification model and calculating method are proposed.The method is summarized at the end of the paper.