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GDR法在大型结构模态分析中的应用

Application of GDR Method to Modal Analysis for Large Finite Element Structure
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摘要 有限元模态分析中 ,往往需要减缩矩阵阶数来减小求解规模 ,目前应用较多的是Guyan静力凝聚法和Kuhar动力凝聚法。本文从理论上分析一种不常用的方法———广义动力化简法 (GDR法 ) ,阐述该方法的基本原理、应用过程及其与前两种方法相比的优越性 ,并通过对城市客车的有限元模态计算加以验证。 By comparing several methods of matrix condensation, such as Guyan method and Kuhar method, an unusual method, GDR method (General Dynamic Reduction Method) is proposed. The principles of GDR method, and the advantages in dynamic characteristics model analysis of large finite element structure are discussed. The superiority via modal analysis for a new type of city bus is confirmed.
作者 李丽君 金先龙 李渊印 卫金桥
机构地区 上海交通大学
出处 《应用力学学报》 EI CAS CSCD 北大核心 2004年第4期143-146,共4页 Chinese Journal of Applied Mechanics
基金 国家自然科学基金资助项目 (60 2 73 0 48)
关键词 广义动力化简 模态分析 凝聚 城市客车 general dynamic reduction, condensation, modal analysis, city bus.
分类号 O241 [理学—计算数学]
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参考文献5

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应用力学学报
2004年 第4期

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