Non-ordinary State-based Peridynamic Simulation of Damage and Failure Process of Polymer Bonded Explosives

被引：0
|
作者：
Li P. [1 ]
Hao Z.-M. [1 ]
Liu Y.-P. [1 ]
Zhen W.-Q. [1 ]
机构：
[1] Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, 621900, Sichuan
来源：
Binggong Xuebao/Acta Armamentarii | 2018年 / 39卷 / 05期
关键词：
Damage; Peridynamics; Polymer bonded explosive; Zero-energy mode;
D O I：
10.3969/j.issn.1000-1093.2018.05.008
中图分类号：
学科分类号：
摘要：
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. © 2018, Editorial Board of Acta Armamentarii. All right reserved.
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页码：893 / 900
页数：7
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