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本帖最后由 wdhd 于 2016-8-29 16:13 编辑
下面的讲义是辛辛那提大学 R.J.Allemang编著的试验模态分析方面的入门资料——
VIBRATIONS: ANALYTICAL AND EXPERIMENTAL MODAL ANALYSIS
振动:解析和试验模态分析
是我见过的最好的试验模态分析入门资料之一。作为在论坛的第一帖,特别分享给大家。
R.J.Allemang是试验模态分析领域的牛人。
如感兴趣,可以从下面的这个链接看看其简历:
http://www.sdrl.uc.edu/Members/randy/randall-j-allemang-phd
VIBRATIONS:
ANALYTICAL AND EXPERIMENTAL MODAL ANALYSIS
Dr. Randall J. Allemang, Professor
Structural Dynamics Research Laboratory
Department of Mechanical, Industrial and Nuclear Engineering
University of Cincinnati
Cincinnati, Ohio 45221-0072
February 1999
Approved for public release
Copyright 1990-1999 UC-SDRL
All Rights Reserved
振动:
解析和试验模态分析
兰德尔 J. 阿莱芒博士,教授 编著
结构动力学研究实验室
机械,工业与核工程系
辛辛那提大学
辛辛那提,俄亥俄45221-0072
1999年1月
准予公开发行
版权 1990-1999 UC-SDRL保留所有权利
下面摘录一点前言 和 简介部分:
PREFACE前言
An initial version of the following set of notes was originally prepared by Dave Formenti in 1977 for use in a short course at the University of Cincinnati on the subject of "Experimental Modal Analysis". The notes have since been rewritten several times to standardize the notation and add further clarification and additional topics by several authors including, R. J. Allemang, R. W. Rost, T. J. Severyn, and J. M. Leuridan, for use in other short courses and the dual level Mechanical Vibrations II (20-263-662) course at the University of Cincinnati.
下面这套笔记最早是在1977年由大卫.佛门兹准备,用于辛辛那提大学的一个以“试验模态分析”为主题的短训班。自此之后,这套讲义历经多次修改,对其中的符号进行了标准化,添加了更进一步的说明和其他主题,作者包括R. J. Allemang,R. W.Rost,T. J. Severyn和J. M. Leuridan,用于其他短训班以及辛辛那提大学的机械振动II(20-263-662)双级课程。
。。。
1. INTRODUCTION简介
The major point of the text is to show how frequency responsefunction (FRF) measurements are related to the structure’s mode shapes and vibrational frequencies. This overall objective will be accomplished by building a mathematical foundation from the analytical and experimental point of view.
本讲义的重点,是说明频响函数(FRF)测量结果是如何与结构模态振型和振动频率建立联系的。将从解析和试验的角度,建立数学关系来达成这个总体目标。
The material is divided into two sections: single degree of freedom, and multiple degree of freedom systems. The single degree of freedomsystem will be used as a means for definingsome standard terminology. The multiple degree of freedom materialis further divided into: undamped, proportionally damped, and non-proportionally damped systems. Throughout the discussion emphasis will be placed on the relationship of frequency response measurements to modal vectors. Furthermore, the following concepts will be presented:
Modal Frequencies, Eigenvalues, System Poles, Characteristic Roots
Modal Vectors, Eigenvectors
Modal Coefficients, Residues
Real Modal Vectors, Complex Modal Vectors
Physical Coordinates, Generalized Coordinates
Principal Coordinates, Modal coordinates
Modal Mass, Damping, and Stiffness
Modal A, Modal B
这个材料分成两部分:单自由度系统和多自由度系统。借助于单自由度系统定义一些标准术语。将多自由度系统进一步分为:无阻尼、比例阻尼和非比例阻尼系统。贯穿始终,将讨论的重点放在频响测量结果与模态向量的关系上。与此同时,介绍了下面一些概念:
模态频率、特征值、系统极点、特征根
模态向量、特征向量
模态系数、留数
实模态向量、复模态向量
物理坐标、广义坐标
主坐标、模态坐标
模态质量、模态阻尼和模态刚度
模态A、模态B
讲义下载地址:
http://www.sdrl.uc.edu/academic- ... tions-ii-20-293-663
不单有讲义,还有大量的matlab源码可供参考。
http://www.sdrl.uc.edu/shareware-freeware/Shareware/VIBS2.zip
http://www.sdrl.uc.edu/academic- ... /ucme662/index.html
赞:老美的分享精神真是值得学习!
补充内容 (2013-2-14 23:24):
这个讲义的姊妹篇,R.J.Allemang教授编著的《VIBRATIONS:EXPERIMENTAL MODAL ANALYSIS振动:试验模态分析》见日记链接:http://home.vibunion.com/blog-199119-20738.html
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