弹道学报2012，Vol.24Issue(1)：63-68,6.
基于粘聚区模型的推进剂开裂数值仿真
Numerical Simulation of Crack Propagation in Solid Propellant Based on Cohesive Zone Model
摘要
Abstract
To investigate the crack propagation in Composite Solid Propellant（CSP）,the cohesive zone model was used to establish physical and mathematical model for the fracture process of CSP,and the cohesive element formulation was derived.Numerical simulation of crack propagation was carried out by using ABAQUS second development technology.The crack path and stress changes of crack tip in HTPB propellant containing Ⅰ-Ⅱ mixed mode crack were obtained.The influence of cohesive zone constitutive parameter on simulation results was analyzed to determine its scope.The numerical simulation result was compared with experimental result.The results show that by the developed numerical simulation method,the damage stress field of crack tip of CSP can be accuratelly simulated and the crack propagation can be predicted.The cohesive zone model offers analysis method for analyzing the integrality and safety of propellant grain.关键词
固体推进剂/有限元法/裂纹扩展/粘聚区Key words
solid propellant/finite element method/crack propagation/cohesive zone分类
航空航天引用本文复制引用
韩波,鞠玉涛,许进升,周长省..基于粘聚区模型的推进剂开裂数值仿真[J].弹道学报,2012,24(1):63-68,6.基金项目
国防重点预研基金项目 （）
