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力学与实践 ›› 2008, Vol. 30 ›› Issue (1): 79-81.doi: 10.6052/1000-0992-2007-192

• 应用研究 • 上一篇    下一篇

悬臂板对接处角刚度的识辨

李享荣 方宇栋 张旭   

  1. 上海大学理学院力学系
  • 收稿日期:2007-04-26 修回日期:2007-07-20 出版日期:2008-02-08 发布日期:2008-02-08

DETERMINATION OF THE ANGLE STIFFNESS IN THE JOINT OF CANTILEVER PLATE

  • Received:2007-04-26 Revised:2007-07-20 Online:2008-02-08 Published:2008-02-08

摘要: 通过试验模态分析,实测悬臂对接板的第一阶固有频率及振型, 将对接板的动力学问题转化为悬臂对接梁来求解. 借助计算机代数语言,编写对接梁的传递矩阵法程序. 推导出对接处含角刚度作为符号的方 程,输入第一阶固有频率就可识别出该处的角刚度,并通过实例验证了此法的有效性.

Abstract: By means of experimental modal analysis for a joint cantilever plate with one end fixed, the first natural frequency and modal shape are determined. The joint plate is treated as a joint cantilever beam. The transfer matrix method is implemented with the computer algebra language. The equation for the angle stiffness is obtained. With the first natural frequency of the joint plate as an input, the angle stiffness can be determined. The validity of this method is shown by experiment.