Numerical simulation of Hopkinson spalling of rock using manifold method

作者：Huang Tao^*; Chen Peng Wan; Zhang Guo Xin; Yang Jun

来源：Chinese Journal of High Pressure Physics, 2006, 20(4): 353-358.

• Crack growth
• Hopkinson dynamic spalling
• Manifold method
• Shock loading

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.

• 出版日期2006
• 单位北京理工大学