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首页> 外文期刊>International Journal of Rock Mechanics and Mining Sciences >Numerical simulation of compressive failure of heterogeneous rock-like materials using SPH method
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Numerical simulation of compressive failure of heterogeneous rock-like materials using SPH method

机译:基于SPH方法的非均质岩石材料压缩破坏数值模拟。

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摘要

A novel numerical approach based on the mesh-free smoothed particle hydrodynamics (SPH) method is developed to simulate the failure of brittle heterogeneous materials by tracing the propagation of the microscopic cracks as well as the macromechanical behaviors. An elasto-plastic damage model based on the extension of the unified twin shear strength (UTSS) criterion is adopted to reflect the strength behavior of the materials. A statistical approach is applied to model the material heterogeneity. The developed SPH code is used to simulate the heterogeneous rock-like material compressive failure under the uniaxial and biaxial loading conditions. The influences of the material heterogeneity as well as the confining loading conditions are investigated. Results demonstrate that the developed program is effective and promising for more complex applications.
机译:提出了一种基于无网格平滑粒子流体动力学(SPH)方法的新型数值方法,通过跟踪微观裂纹的扩展以及宏观力学行为来模拟脆性异质材料的破坏。采用基于统一双剪切强度准则的扩展的弹塑性损伤模型来反映材料的强度行为。应用统计方法对材料异质性进行建模。所开发的SPH代码用于模拟单轴和双轴载荷条件下的非均质岩石状材料压缩破坏。研究了材料异质性以及限制加载条件的影响。结果表明,所开发的程序对于更复杂的应用是有效且有希望的。

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