固体火箭发动机纤维缠绕壳体承载能力数值仿真

Numerical simulation of load-bearing capacity of solid rocket motor fiber winding composite case

为了分析某固体火箭发动机复合材料壳体承载能力,建立了该壳体的有限元数学模型,并进行了数值仿真。计算分析表明,壳体铝裙尖端部位出现应力最大值和应力集中区,裙部变形不协调,结构设计不合理。有限元分析与实际试验结果具有很好的一致性,为该壳体结构的设计改进提供了理论依据。

In order to analyze load-bearing capacity of the solid rocket motor fiber winding composite case,its finite element model was established and its load-bearing capacity was simulated.The calculation and analysis results indicate that the max-stress and stress concentrate appears in the tip of its aluminum skirt.The analysis agrees quite well with the results of real test,which provides theory support for improving of case design.