摘要
一种经过改进的完备模态型减缩（ICMR）法成功地在本文提出来了。它有效地克服了原完备模态型减缩（CMR）法不能保持自由结构之刚体特性的缺点，可是由ICMR法产生的减缩模型的弹性模态精度却不及CMR法。由此建议，对约束结构和自由结构分别以采用CMR法和ICMR法为好。
An Improved Complete Mode-type Reduction (ICMR) method is developed successfully in this paper. ICMR can remove efficiently a shortcoming of CMR method, which is that null frequencies of the suspended (free) structures can not be retained in the reduced model obtained by CMR method. How-ever the precision of elastic modes given by ICMR is not as good as that by CMR. Thus it is suggested that CMR and ICMR should be applied to the restrained and suspended structures, respectively.
出处
《强度与环境》
北大核心
1995年第3期38-45,共8页
Structure & Environment Engineering
关键词
结构动力分析
模态分析
参数分析
减缩法
Dynamic structural analysis, Modal analysis, Parametric analysis, Calculation method
