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为更好地设计并达到导弹系统的设计要求,对火箭发动机壳的轻重量设计引进新的设计准则是很重要的。这个设计准则要求参照材料双轴极限强度来取的壳结构的安全度。这种材料的双轴极限强度一般都是通过缩尺柱形箱体破坏试验取的。但是由于半径/厚度之比不同,工程师经常对缩尺模型数据用于全尺寸导弹壳体有疑议。此外,计算火箭发动机壳体园柱部分双轴应力场中主应力的强度理论是用Huber-Henkey-VonMises破坏能量理论。然而这理论的基本推导是基于虎克定律,所以限制这个理论最大使
In order to better design and meet the design requirements of missile systems, it is important to introduce new design guidelines for the lightweight design of rocket engine housings. This design guideline requires the safety of the shell structure taken with reference to the biaxial ultimate strength of the material. The biaxial ultimate strength of this material is generally taken from the ruler test of a reduced-size cylindrical box. However, due to different radius / thickness ratios, engineers often have doubts about the use of scale model data for full-size missile housings. In addition, the theory of strength for calculating the principal stress in the biaxial stress field of the cylindrical part of a rocket motor shell is based on the theory of Huber-Henkey-Von Mises damage energy. However, the basic derivation of this theory is based on Hooke’s law, so it limits the maximum use of this theory