Deformation Analysis of Free Loading Propellant in Storage
Three-dimentional viscoelastic large deformation incremental constitutive equation was derived based on Total Lagrangian method. Combined with material property testing method of NEPE propellant by DMA, deformation, equivalent von mises stress and strain of free loading propellant in storage were analyzed. The results showed that gravity had some effects on the structural integrity of free loading propellant. There was obvious subsidence magnitude on the top surface of solid propellant, outer diameter increased and inner diameter partly decreased, which would affect constructional property of SRM greatly. Tangential stress between propellant grains and inhibitor was not very high, which would not lead to dewetting phenomenon.
viscoelasticity total Lagrangian method free loading propellant storage DMA
YU Yang WANG Ningfei ZHANG Ping
Electromechanics and Materials College, Dalian Maritime University, Dalian 116026, Liaoning, China S School of Aeronautics Science and Technology, Beijing Institute of Technology, Beijing 100081, China
国际会议
西安
英文
240-243
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）