利用试验模态分析结果,对有限元力学模型本身或其中某些参数进行修改是必要的和有工程意义的。这一“修改”既是数学上的优化问题又是工程设计问题。本文介绍自研制的“结构动力修改程序”,述及一般原理及框图,并给出一个悬臂梁实例。 Using experimental modal analysis results, it is necessary and engineeringly important to modify the finite element mechanical model itself or some of its parameters. This “modification” is both a mathematical optimization problem and an engineering design problem. This article describes self-developed “structural dynamic modification procedures”, describes general principles and block diagrams, and gives an example of a cantilever beam.