为了研究舰艇巡航时运动以及所经海区温度载荷对舰载固体发动机装药的影响,建立了舰艇运动模型和所经海区的温度变化模型;采用有限元技术计算了装药在这些载荷下的应力、变形和温度分布。结果表明:装药在舰艇动载荷的作用下,出现了较为严重的应力集中和变形,温度载荷对装药的影响不大;但是在舰艇动载荷和温度载荷的耦合作用下,叠加的集中应力有可能超过人工脱粘的许用应力而破坏脱粘层导致发动机故障。

When a naval vessel cruises, its motion and temperature load of the sea would affect the missile's solid rocket motor propellant. The naval vessel cruise's kinematic model was established to research this effect. Finite-element method was used to analyze stress, deformation and temperature distribution of propellant under those loads. It proves that severe stress concentration and deformation occurred on the propellant in motion of the naval vessel, and the temperature load slightly affects it, but under coupling of the ship's movement and temperature loads, superimposed stress concentration would be likely to exceed allowable artificial debonding stress, the artificial debonding layer would be damaged, thus, the missile's solid rocket motor would fail.