【摘要】 评述了结构动力模型修正技术从矩阵型修正方法到元素型修正方法的发展,总结了元素型模型修正方法的主要算法,介绍了模型修正中的自由度匹配、灵敏度分析和对模型修正方法的有效性进行检验的经验标准,归纳了目前模型修正的一些关键技术问题。更多还原

【Abstract】 Following it’ s evolution, this paper summarized the methodologies of space structural dynamic FEM modifying, then emphasized methods of updating the design parameters or elements of FEM,by the way ,mentioned the reduction of FEM and the sensitivity of eigen- value. After that, it expatiated on the validations of the modifying effect, at last presented some key questions need be solved in this field.更多还原