SIMULATIONS OF BRITTLE SOLIDS USING SMOOTH PARTICLE HYDRODYNAMICS
SIMULATIONS OF BRITTLE SOLIDS USING SMOOTH PARTICLE HYDRODYNAMICS
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DOI：
10.1016/0010-4655(94)00176-3
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发表时间：
1995-05-01
影响因子：
6.3
通讯作者：
ASPHAUG, E
中科院分区：
文献类型：
--
作者：
BENZ, W;ASPHAUG, E
我们描述了适用于固体建模的平滑粒子流体动力学 (SPH) 方法的一个版本。该模型包含强度并针对超出 Hugoniot 弹性极限的应力实现 von Mises 屈服关系。在与脆性破坏相关的较低应力下，我们使用基于显式威布尔缺陷的成核和生长的速率相关强度。我们通过检查简单拉伸杆中裂纹的扩展，并将模拟与高速冲击和缩孔的实验室实验进行比较，来说明断裂模型的功能。
We describe a version of the smooth particle hydrodynamics (SPH) method suitable for modeling solids. The model includes strength and implements a von Mises yielding relation for stresses beyond the Hugoniot elastic limit. At lower stresses associated with brittle failure we use a rate-dependent strength based on the nucleation and growth of explicit Weibull flaws. We illustrate the capabilities of our fracture model by examining the propagation of cracks in a simple tensile rod, and by comparing simulations with laboratory experiments for high speed impacts and cratering.