土木学会論文集A2(応用力学)
応用力学論文集Vol.16(特集)
塑性変形勾配テンソルの乗算分解による有限変形・異方性回転硬化下負荷面Cam-clayモデル
千田 大山川 優樹橋口 公一池田 清宏
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69 巻 (2013) 2 号 p. I_255-I_266

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This paper aims to develop a finite strain anisotropic elasto-plastic constitutive model for frictional materials and its stress calculation algorithm based on the return-mapping scheme. The nonlinear rotational plastic hardening is incorporated into the model in a physically and theoretically reasonable way by introducing the dual multiplicative decompositions of the deformation gradient tensor. In addition to the usual multiplicative decomposition into elastic and plastic parts, the plastic part is decomposed further into an energetic part and a dissipative part. The energetic part leads to a tensorial internal variable related to the rotational plastic hardening. The Cam-clay plasticity model is adopted as a specific constitutive model relevant to frictional materials. Fundamental behavior of the proposed model is demonstrated through several numerical examples.

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© 2013 公益社団法人 土木学会
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