1502 時間域均質化法によるバラスト材の繰り返し変形解析の効率化の試み(軌道構造,SS2:メンテナンス,コストダウン,第18回交通・物流部門大会(TRANSLOG2009))

概要

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The numerical algorithm for reducing the computational work of the cyclic deformation analysis using the hypoplastic model with the time-domain homogenization is proposed. The multiple temporal scales of the stress, strain and void ratio are introduced, and the original constitutive equations are decomposed into coupled micro-chronological and macro-chronological equations using asymptotic analysis. The proposed algorithm enables us to change the step width of the macro-chronological analysis, and to reduce the number of the micro-chronological analysis. The accuracy of the simulation results depends on convergence speed of the accumulation of the permanent deformation.
一般社団法人日本機械学会の論文
2009-12-02