1504 バラスト材の繰り返し変形解析に用いる下負荷面モデルの改良とその効果(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 3-D finite element analysis for cyclic vertical loading tests of a full-scale railway ballasted track is implemented using the extended subloading surface elastoplastic model with the modified material functions proposed by Hashiguchi. The modified function fulfills the convexity of the yield surface for a whole range of the friction angle. The vertical displacement of the bottom of the sleeper is good agreement to the experiment data under the prescribed cyclic loading. The large plastic strain extends from the edge of the sleeper to the bottom of the ballast layer; the frictional sliding zone can be found in the ballast layer.
一般社団法人日本機械学会の論文
2009-12-02