241 大規模非線形系に対する高性能振動解析手法の開発 : 効率的な高次モード消去法(解析,OS-21 機械・構造物における非線形振動とその応用,総合テーマ「伝統を,未来へ!」)

概要

論文の詳細を見る
A rational method of dimensional reduction is developed in order to analyze accurately a nonlinear vibration of a large-scale system with nonlinearity. Almost nodes without strongly nonlinear excitation are transformed into the modal coordinates. And a small number of modes whose effect on computation accuracy of the vibration analysis is significant are extracted. On the other hand, the remaining modes are appropriately approximated and are eliminated. The low-dimensional model is constructed by these procedures. Furthermore, by applying an efficient method to eliminate higher-order modes, the low-dimensional model is constructed without computation of higher-order eigen pairs. Effectiveness of this method is verified by computational result.
一般社団法人日本機械学会の論文
2010-09-14