Orthogonality for Modal Vector Correlation: The Effects of Removing Degrees-of-Freedom

机译：模态矢量相关性的正交性：消除自由度的影响

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This paper reviews the weighted orthogonality property of modal vectors, the many Test-Analysis Model (TAM) transforms that have been developed to reduce Finite Element Model (FEM) based mass matrices and the Modal Assurance Criterion (MAC). These associated technologies have all been developed to try and correlate the FEM and experimentally obtained mode shapes. A case study is presented where the Effective Independence method for Degree-of-Freedom (DOF) selection was used to systematically reduce the DOF's of the FEM and understand the effects of DOF reduction on MAC, the Guyan TAM and the System Equivalent Reduction/Expansion Process (SEREP) TAM.

机译：本文评论了模态矢量的加权正交性，已经开发的许多测试分析模型（TAM）变换，以减少基于有限元模型（FEM）的大规模矩阵和模态保证标准（MAC）。所有相关技术都已开发出来尝试和相关的有限元和实验获得的模式形状。提出了一种案例研究，其中用于自由度（DOF）选择的有效独立方法来系统地减少有限元的DOF，并了解DOF减少对MAC，Guyan TAM和系统等效减少/扩展的影响过程（Serep）TAM。

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《IMAC Conference on Structural Dynamics》|2013年||共11页
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Michael L. Mains;
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中图分类 O342-53;
关键词
Modal correlation orthogonality; TAM; DOF;

机译：模态相关性正交;TAM;DOF;

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1. Cross Orthogonality Checks of Modal Vectors (1st Report, Coordinate Cross Orthogonality Checks without a Mass Matrix) [J] . Yuichi NIATSUMURA, Nobutaka TSUJIUCHI, Takayuki KOIZUMI 日本機械学会論文集. C編 . 1999,第634期

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4. Orthogonality for Modal Vector Correlation: The Effects of Removing Degrees-of-Freedom [C] . Michael L. Mains IMAC Conference on Structural Dynamics . 2013

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Orthogonality for Modal Vector Correlation: The Effects of Removing Degrees-of-Freedom

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