147 モード解析を用いた大規模非線形系の合理的な低次元化 : 第1報,低次元モデルの構成法

概要

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A rational reduction method using real constrained mode is developed in order to analyze accurately a nonlinear vibration and stability generated in a large-scale system with locally strong nonlinearity. In the present method, the state variables of linear nodes are transformed into the modal coordinates, and the modes with significant effect on the computation accuracy of the solution are extracted. On the other hand, the remaining modes with small effect are appropriately approximated and are eliminated. The very accurate low-dimensional model is constructed by these procedures. The effectiveness of the present method is verified from the computational results for the straight-line nonlinear structure as a fundamental example.
社団法人日本機械学会の論文
2006-08-06