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Identification of Complex Modal Parameters(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2000年01期
Page:
56-60
Research Field:
Publishing date:

Info

Title:
Identification of Complex Modal Parameters
Author(s):
FangZiliang
School of Manufacturing Engineering,NUST,Nanjing 210094
Keywords:
machine tools vibrat ion damping complex modal analysis
PACS:
TG502.3
DOI:
-
Abstract:
In the past study of dynamic proport ies of a machine tool, the method of real modal analysis was used g enerally under supposing proport ional damping. In fact , however, there are material internal damping as well as touching damping betw een the component surfaces in a machine tool st ructure. T he mechanism of their act ion is very complex . So it is impossible to decouple equations of the system mot ion by means of the old method of real modal ana-l ysis. In this paper, by use of the complex modal principle, the way of M7130 surface grinder has been tested. It was combined w ith theoret ical analysis, the complex modal parameters of the first and second order w ere ident if ied and their associated diagrams of the complex mode shapes w ere also done.

References:

1 扬木肃, 唐恒龄, 廖伯瑜. 机床动力学( Ò ). 北京: 机械工业出版社, 1983
2 Sedek M M. 机床动力学. 华中工学院机械工程研究所译. 武汉: 华中工学院, 1980
3 Tobis S A. 机床振动学. 北京: 机械工业出版社, 1965

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Last Update: 2013-03-25