爆炸与冲击2017，Vol.37Issue(5)：807-812,6.DOI:10.11883/1001-1455(2017)05-0807-06
基于力热耦合材料模型的Steven试验数值模拟方法
Numerical method for simulating Steven test based on thermo-mechanical coupled material model
摘要
Abstract
In this paper,we figured out a numerical simulation method involving the mechanical,thermal and chemical properties of the Steven test based on the thermo-mechanical coupled material model to simulate the Steven test of the plastic bonded explosive 9501.In this model,the stress-strain relationship is described by the dynamic plasticity model,the impact-induced thermal effect depicted by the isotropic thermal material model,the chemical reaction is described by the Arrhenius reaction rate law,with the effects of heating and melting on mechanical properties and thermal properties of materials also taken into account.Specific to the standard Steven test,the numerical model was validated by comparing the obtained deformation of the target and the ignition threshold of the PBX 9501 with the experimental data in the references.The calculated results are in good agreement with the experimental data,suggesting that this method is capable of simulating the Steven test.Compared to the previous models,this model does not need to incorporate experiential ignition criterion and therefore can be used more widely in the study of thermo-mechanical responses and local ignition of explosives subjected to low velocity impact.关键词
Steven试验/力热耦合/低速撞击/非冲击点火Key words
Steven test/thermo-mechanical coupled model/impact/non-shock initiation分类
数理科学引用本文复制引用
楼建锋,张延耿,周婷婷,洪滔..基于力热耦合材料模型的Steven试验数值模拟方法[J].爆炸与冲击,2017,37(5):807-812,6.基金项目
国家自然科学基金项目(11302031,11402031) （11302031,11402031）
中国工程物理研究院科学技术发展基金项目(2014B0101014) （2014B0101014）
中国工程物理研究院安全弹药研发中心开放基金项目(RMC2014B02) （RMC2014B02）
