CAJ | 학술논문

分别采用三维弹性和三维线粘弹性模型，对固体发动机药柱在低温和点火升压2种载荷下的结构完整性进行了计算分析。研究了推进剂弹性模量E、泊松比μ、药柱m数等参数对结构完整性的影响。结果表明，在发动机低温点火条件下，药柱内孔表面是最危险部位；固化降温和点火升压2种载荷引起的最大等效应变在此是相互叠加的；药柱m数对固化降温和点火升压载荷下的应变分布有重要影响。
분별채용삼유탄성화삼유선점탄성모형，대고체발동궤약주재저온화점화승압2충재하하적결구완정성진행료계산분석。연구료추진제탄성모량E、박송비μ、약주m수등삼수대결구완정성적영향。결과표명，재발동궤저온점화조건하，약주내공표면시최위험부위；고화강온화점화승압2충재하인기적최대등효응변재차시상호첩가적；약주m수대고화강온화점화승압재하하적응변분포유중요영향。
Using three?dimensional linear elasticity and viscoelasticity models,the calculation analysis of structural integrity for solid rocket motor grains at low temperature and ignition pressurization loading was completed. The influences of propellant elastic modulus E,Poisson ratio μ,m number ( the ratio of outer diameter to inner diameter) of grain on calculation results were studied. The results show that grain perforation surface is the most dangerous position at low temperature ignition pressurization. The maxi?mums of equivalent strain induced by low temperature and ignition pressurization loading are added to each other at grain perforation surface.The m number of grain has important influence on the strain distribution induced by low temperature and ignition pressuriza?tion loading.