Numerical simulation of Hopkinson spalling of rock using manifold method

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作者：
National Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China [1 ]
不详 [2 ]
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来源：
Gaoya Wuli Xuebao | 2006年 / 4卷 / 353-358期
关键词：
Attenuation - Computer simulation - Crack initiation - Dynamics - Failure (mechanical) - Spalling - Stresses - Tensile stress;
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摘要：
The second-order manifold method (MM) is used to simulate the dynamic Hopkinson spalling process of rock under shock loading through introducing a criterion of crack initiation and crack growth. The attenuation of stress waves and the spalling process caused by a reflected tensile stress wave are reproduced. The simulation results are compared with theoretical analysis. The thickness of the formed scab and its velocity obtained from the simulation are in good agreement with the theoretical values. MM has proven to be an effective method in simulating the dynamic failure process of materials under shock loading and exhibits some advantages to conventional numerical methods in the study of dynamic failure and related issues.
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