Researches on the Accurate Measuring Method of Structures Internal Loss Factor by Power Input Method

摘要：

The theory of measuring internal loss factor of a multi-modal structure was studied in this paper. A new formula was brought out, which takes into account that the modal with the smallest damping contributes greatly to the whole response of all modals. The error of measuring internal loss factor using power input method was also discussed. Numerical simulations were done and results were given. It was found that the number of test points influences greatly on the measure error. Guideline was given on how to choose the most smallest number of test points while maintaining measure accuracy.

关键词： Internal loss factor statistical energy analysis accuracy

作者: Yingjian Wang Xianjun Wu

作者单位: Electronic Engineering College, Naval University of Engineering, Wuhan 430033, China School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, Hubei

会议类型: 国际会议

会议名称: 第二届数字制造国际会议(2nd Sumposium on Digital Manufacturing ISDM09)

会议地点: 武汉

会议语种:英文

页码: 141-144

在线出版日期: 2009-09-10（万方平台首次上网日期，不代表论文的发表时间）