发动机药柱环向开槽结构完整性研究

装药模数较高的情况下,管型装药发动机圆管中段在固化降温后点火时,由于应变集中而容易导致发动机爆炸。为了保证较高的装填模数,对发动机药柱局部环向开槽,以缓解应变集中,从而保证发动机的结构完整性。借助有限元方法,对环向开槽的重要结构参数进行研究,探讨了开槽宽度、开槽深度、开槽角度等参数对结构完整性的影响,提出环向开槽发动机装药结构完整性设计的主要依据。

Structural Integrity Research on the Ring Groove of Solid Rocket Motor Grain

In the condition of high charge module , when middle section of circular pipe section of tube-style charge motor ignites after decreasing the temperature , it is easy to cause the motor to explode because of strain concentration .In order to ensure high charge module , local ring groove for motor is car-ried out to relieve strain concentration , which can ensure the structural integrity of motor .By finite ele-ment method , key structural parameters of ring groove are researched .The influences of groove width , groove depth and groove angle on structural integrity are analyzed , which can provide basis for the struc-tural integrity design of ring groove motor charge .