含能材料2017，Vol.25Issue(2)：118-124,7.DOI:10.11943/j.issn.1006-9941.2017.02.005
高聚物粘结炸药蠕变行为的近场动力学模拟方法
Application of Peridynamic Method on Prediction of Creep Behavior of Polymer Bonded Explosives
摘要
Abstract
Peridynamics is a recently developed meshfree method with many aspects needing to be further studied, such as viscoelasticity, plasticity and the coupling of elasticity, plasticity and viscosity.The analytical ability for considering viscoelastic behavior of peridynamics is developed.The theoretical basis, modeling procedure and numerical scheme of peridynamics are first reviewed.Then the expressions of creep compliance under different stresses and the peridynamic creep response functions are deduced combing time-stress equivalence principle of nonlinear viscoelastic materials and utilizing Burgers viscoelastic model.In this manner, the peridynamic creep simulation method which can be applied to polymer bonded explosives is established.The creep behavior of PBX9502 is then simulated using this method, which indicates a good conformity with experiment results.The established method can be applied to analyze creep behavior of polymer bonded explosives under different temperatures and different stresses.关键词
高聚物粘结炸药(PBX)/蠕变/温度/应力Key words
polymer bonded explosives/creep/temperature/stress分类
军事科技引用本文复制引用
李潘,郝志明,刘永平,甄文强..高聚物粘结炸药蠕变行为的近场动力学模拟方法[J].含能材料,2017,25(2):118-124,7.基金项目
国家自然科学基金(11472257)和中国工程物理研究院重点学科项目(计算固体力学) （11472257）
