Instantaneous equilibrium pressure method is used in this paper to analysis the internal ballistics of pyrogen-type igniters. A concept of igniter heat loss coefficient is also presented.
用固体火箭发动机中常用的瞬态平衡压强法对烟火剂式点火器内弹道性能进行了理论预示，并提出热损失系数的概念。
By using the elastoplastic finite element method, mechanical model for wear tension and internal pressure resistance of casing joints is set up.
采用弹塑性有限元方法，建立了套管接头磨损拉伸与抗内压的有限元力学模型。
On the basis stated above, a numerical method of plastic dynamics and material failure judgment are used to analyze the causes of joint failure from the aspects of structure and internal pressure.
据此，从结构和内压角度，应用塑性动力学的数值方法和材料的破坏判据分析了引起接头脱落失效的几种因素。
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