A New Iterative Method for Condensation of Structural Matrices

WU Bin; YU Jian-gong; PAN Ying

Journal of Beijing University of Technology > 2006 > 32(6): 481-484.

WU Bin, YU Jian-gong, PAN Ying. A New Iterative Method for Condensation of Structural Matrices[J]. Journal of Beijing University of Technology, 2006, 32(6): 481-484.

Citation:

WU Bin, YU Jian-gong, PAN Ying. A New Iterative Method for Condensation of Structural Matrices[J]. Journal of Beijing University of Technology, 2006, 32(6): 481-484.

Citation:

WU Bin, YU Jian-gong, PAN Ying. A New Iterative Method for Condensation of Structural Matrices[J]. Journal of Beijing University of Technology, 2006, 32(6): 481-484.

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A New Iterative Method for Condensation of Structural Matrices

1. College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China;
2. College of Mechanical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China

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Received Date: November 04, 2004
Available Online: December 29, 2022

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Abstract

In order to reduce the degree of freedom of finite element models to make it consistent with corresponding experimental degree of freedom, based on the modified system eigen-equation, a new iterative dynamic condensation formula, which reflects the transforming relation between system's major and minor degrees of freedom has been deduced. Through numerical calculation and comparison with the existed iterative dynamic condensation formulas, the new formula's convergence rate is quicker with better stability and higher accuracy.
- dynamic condensation,
- model reduction,
- natural frequencies,
- degree of freedom

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