李亮, 赵成刚. 基于SMP破坏准则的土体弹塑性动力本构模型[J]. 工程力学, 2005, 22(3): 139-143.
引用本文: 李亮, 赵成刚. 基于SMP破坏准则的土体弹塑性动力本构模型[J]. 工程力学, 2005, 22(3): 139-143.
LI Liang, ZHAO Cheng-gang. ELASTO-PLASTIC DYNAMIC CONSTITUTIVE MODEL OF SOILS BASED ON THE SMP FAILURE CRITERION[J]. Engineering Mechanics, 2005, 22(3): 139-143.
Citation: LI Liang, ZHAO Cheng-gang. ELASTO-PLASTIC DYNAMIC CONSTITUTIVE MODEL OF SOILS BASED ON THE SMP FAILURE CRITERION[J]. Engineering Mechanics, 2005, 22(3): 139-143.

基于SMP破坏准则的土体弹塑性动力本构模型

ELASTO-PLASTIC DYNAMIC CONSTITUTIVE MODEL OF SOILS BASED ON THE SMP FAILURE CRITERION

  • 摘要: 利用土体的塑性流动理论,提出了用于描述饱和砂土动力反应性质的弹塑性本构模型.土体总的变形由三部分组成:即弹性应变、与体积屈服机制相关的塑性应变和与剪切屈服机制相关的塑性应变.土体在初始加载与卸载和重新加载阶段性质的差别通过采用不同的模型参数加以反映.该模型能够较为准确地描述饱和砂土在单调加载和循环加载条件下的反应性质.

     

    Abstract: Based on the plastic flow theory of soils, an elasto-plastic constitutive model for describing the dynamic behavior of the saturated sands is developed. The total deformation of soils consists of three parts: elastic strain, plastic strain related to volumetric yielding mechanism and plastic strain related to shear yielding mechanism. The soil behavior in initial loading, unloading and reloading stages can be reflected by adopting different model parameters. The constitutive model can describe the behavior of saturated sands subjected to both monotonic and cyclic loading with reasonable accuracy.

     

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