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Issue:
ibrahim shi yu ji shu de ritz fa fen xi
Author(s):
SHEN Wenjun
,
WU Xuqiang
Pages:
6
-
10
Year:
1987
Issue:
4
Journal:
Journal of Mechanical Strength
Keyword:
特征值问题
;
模态空间
;
特征矩阵
;
噪音干扰
;
模型
;
模态参数
;
分析技术
;
特征向量
;
子空间
;
基本特性
;
Abstract:
本文详细分析了Ibrahim时域法模型的基本特性,指出采用Rayleigh—Ritz分析技术可以使噪音对依氏模型的影响程度达到最小。同时,根据本文所推荐的建模方法,只要求得待测结构的第一阶特征对,就可以导出依氏特征矩阵所感兴趣的全部特征值,亦即待测结构所需的全部特征值和阻尼比。这种建模方法能够排除噪音干扰。
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