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摘要:
Vibration mode based model reduction methods like Component Mode Synthesis (CMS) will be compared to methods coming from control engineering, namely moment matching (MM) and balanced truncation (BT). Conclusions based on the theory together with a numerical demonstration will be presented. The key issues on which the paper is focused are the reduction of metallic structures, the sensitivity of the reduced model to varying boundary conditions, full system response, accurate statics and the possibility to determine “a priori” the number of needed modes (trial vectors). These are important topics for the use of reduction methods in general and in particular for the implementation of FE models in multi body system dynamics where model reduction is widely used. The intention of this paper is to give insight into the methods nature and to clarify the strengths and limitations of the three methods. It turns out, that in the considered framework CMS delivers the best results together with a clear strategy for an “a priori” selection of the modes (trial vectors).
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篇名 On the Modal and Non-Modal Model Reduction of Metallic Structures with Variable Boundary Conditions
来源期刊 力学国际期刊(英文) 学科 医学
关键词 Model Reduction Vibration MODES Component Mode Synthesis MOMENT Matching BALANCED TRUNCATION
年,卷(期) 2012,(6) 所属期刊栏目
研究方向 页码范围 311-324
页数 14页 分类号 R73
字数 语种
DOI
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研究主题发展历程
节点文献
Model
Reduction
Vibration
MODES
Component
Mode
Synthesis
MOMENT
Matching
BALANCED
TRUNCATION
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研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
力学国际期刊(英文)
月刊
2160-049X
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
280
总下载数(次)
0
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