南京林业大学学报(自然科学版) ›› 2004, Vol. 47 ›› Issue (03): 37-40.doi: 10.3969/j.jssn.1000-2006.2004.03.010

• 研究论文 • 上一篇    下一篇

结构动力模型修正的一种迭代法

桂冰;周宇虹   

  1. 南京航空航天大学;江苏 南京 210016南京林业大学,江苏 南京 210037;南京林业大学;江苏 南京 210037
  • 出版日期:2004-06-18 发布日期:2004-06-18

A Stable Iterative Method of Updating Structural Dynamic Model

GUI Bing~(1,2),ZHOU Yu-hong~2   

  1. 1.Nanjing University of Aeronautics and Astronautics,Nanjing 210016 China; 2.Nanjing Forestry University,Nanjing 210037 China
  • Online:2004-06-18 Published:2004-06-18

摘要: <正>提出一种结构动力学模型的修正方法,该方法首先利用模态理论的正交关系,建立了结构初始质量和刚度矩阵的修正方程,然后利用一种数值稳定的迭代法求修正参数。通过模型修正的实例表明,修正后模态参数与实测结构的模态参数吻合较好。

Abstract: A method for the modifying structural dynamical model is proposed in this paper.Based upon the orthogonal equation of model theory,updating equations about the mass and stiffness matrices of the structure are constructed at first and then,a stable iterative method is presented to solve the modified structural parameters.A numerical example is given.A better agreement between updating and experimental model parameters is obtained.

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