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《Acta Armamentarii》 2018-05
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Non-ordinary State-based Peridynamic Simulation of Damage and Failure Process of Polymer Bonded Explosives

LI Pan;HAO Zhi-ming;LIU Yong-ping;ZHEN Wen-qiang;Institute of Systems Engineering,China Academy of Engineering Physics;  
The dynamic relaxation method for obtaining the steady-state solutions of equilibrium equations in non-ordinary state-based peridynamic theory is studied. The hourglass force is incorporated to suppress the zero-energy modes. In the foundation of considering the influence of damage on force state,an influence function damage defining method is proposed,in which the effects of damage on approximate deformation gradient and shape tensor are calculated. Therefore,the problem of stress release in damaged region is overcome. The non-ordinary state-based peridynamic theory is applied to the simulation of damage and failure behaviors of polymer bonded explosives in Brazilian disc experiment. It shows that the simulated results of the modified method are in better accordance with the experimental results.
【Fund】: 国家自然科学基金项目(11472257、11672278)
【CateGory Index】: TQ560.1
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