分别建立潜射导弹发射流场和发射动力学模型。通过对发射流场模型分析获取导弹所受非定常流场载荷。将流场载荷数据传递至发射动力学模型中作为导弹结构所受外载荷,分析得到导弹的受载与离筒姿态信息。分析结果表明,导弹前端截面与后端截面间所受轴力变化趋势一致,但在幅值上差别较大;弹体所受弯矩载荷随着导弹出筒长度增加而增加并伴有明显偏转;导弹结构设计应以保证横向刚度和强度为主。结论可作为导弹强度设计评估依据。

Exhaust field model and launching dynamics model were established. Unsteady flow field load acting on the missile was obtained by launch flow field analysis. The flow field load data was passed to the launch dynamics model as external load of missile. The axial forces applied to front section and rear section of the missile have the same trend, but vary greatly in value. The bending moment of missile is proportional to stroke, and missiles with obvious deflection. The design criterion should ensure that the lateral stiffness and strength of missile. Article conclusion can be used as basis for missile strength design.