CAJ | 학술논문

为研究大型固体发动机对特殊立式贮存环境的适应性，开展了大型固体发动机立式贮存状态的受力分析以及立式贮存试验研究。基于大型固体发动机立式贮存环境条件的分析，综合考虑固化降温、充气内压等因素对发动机立式贮存的影响，开展了联合载荷作用下的计算分析。研究结果表明，发动机立式贮存状态相对初始状态前、后人工脱粘间隙都增大，前人工脱粘间隙增大较多，前人工脱粘开口部位轴向位移最大，中孔径向位移最大；发动机充气后药柱的变形量、前后凸环形药柱界面及药柱中孔处等效应力应变随内压提高有所提高，但前后凸环形药柱界面和药柱中孔处受力状态从三向或两向受拉变为三向受压状态，设计合适的充气内压有利于发动机的长期立式存放。燃烧室立式贮存试验实测了药柱立式贮存后的变形，实测结果与计算结果趋势一致。
위연구대형고체발동궤대특수입식저존배경적괄응성，개전료대형고체발동궤입식저존상태적수력분석이급입식저존시험연구。기우대형고체발동궤입식저존배경조건적분석，종합고필고화강온、충기내압등인소대발동궤입식저존적영향，개전료연합재하작용하적계산분석。연구결과표명，발동궤입식저존상태상대초시상태전、후인공탈점간극도증대，전인공탈점간극증대교다，전인공탈점개구부위축향위이최대，중공경향위이최대；발동궤충기후약주적변형량、전후철배형약주계면급약주중공처등효응력응변수내압제고유소제고，단전후철배형약주계면화약주중공처수력상태종삼향혹량향수랍변위삼향수압상태，설계합괄적충기내압유리우발동궤적장기입식존방。연소실입식저존시험실측료약주입식저존후적변형，실측결과여계산결과추세일치。
In order to study the adaptability of large?scale solid rocket motor to the special vertical storage environment,FEM a?nalysis and experimental study were carried out. Based on the analysis of storage environment,considering the influence of curing and inner pressure on the vertical storage grain,calculation and analysis under combined loading were carried out. Calculation re?sults show that the gaps of fore and aft stress release boot become bigger in vertical storage state than that in the initial state.The gap of the fore stress release boot increase more than that of the aft one. The biggest axial displacement occurs on the opening position of the stress release boot.The biggest radial displacement of the grain occurs on the perforation.After filling gas in the motor,the de?formation of the grain,the equivalent stress/strain of the fore/aft grain interface on the root of the stress release boot and the equiva?lent stress/strain of the perforation grain increase with the applied inner pressure.However,the stress state of the fore/aft grain inter?face on the root of the stress release boot and the perforation grain transfer from three?orientation/two?orientation tensile to two?orien?tation compression,so appropriate inner pressure is advantageous to the long?term vertical storage of the motor.Finally,the vertical storage experiment was carried out and the deformation of the grain was measured. Comparison results show that the measured values agree well with the calculation values.