| 纤维缠绕固体火箭发动机壳体的应力及强度分析 |
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| 引用本文： | 孙雪坤,林德春.纤维缠绕固体火箭发动机壳体的应力及强度分析[J].复合材料学报,1997,14(1):116-121. |
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| 作者姓名： | 孙雪坤 林德春 |
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| 作者单位： | [1]哈尔滨工业大学 [2]航天工业总公司第四设计院 |
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| 摘 要： | 纤维增强复合材料在许多领域得到广泛应用,固体火箭发动机壳体就是一例。因此,分析其不同内压下的应力及预报爆破压力是十分重要的。复合材料结构承载过程的应力分析,需进行单元失效判断,许引入失效单元的刚度衰退,这种方法是最合理的。本文采用该方法并结合大变形有限元分析理论,计算了某一纤维缠绕固体火箭发动机壳体的应力和爆破压力,数值计算结果与实测数据吻合,证明该方法可用于纤维缠绕复合材料结构的应力及强度分析,值得重视。
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| 关 键 词： | 复合材料 失效分析 几何非线性 有限元 |
| 收稿时间： | 1995-04-26 |
| 修稿时间： | 1996-02-05 |
ANALYSIS OF STRESS AND STRENGTH TO FILAMENT WOUND SOLID-ROCKET MOTOR CASE |
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| Sun Xuekun,Guo Yanyang,Du Shanyi,Lin Dechun.ANALYSIS OF STRESS AND STRENGTH TO FILAMENT WOUND SOLID-ROCKET MOTOR CASE[J].Acta Materiae Compositae Sinica,1997,14(1):116-121. |
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| Authors: | Sun Xuekun Guo Yanyang Du Shanyi Lin Dechun |
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| Affiliation: | 1. Harbin Istitute of Technology, Harbin 150001;2. 4th Institute of Astronautical Industrial Corporation |
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| Abstract: | Fiber reinforced composites are widely used in many fields. One notable application is the solid-rocket motor case. Therefore,predicting its stress and strength is extremely important. A failure analysis for predicting local damage of the structure amd making the stiffness degradation is essential to composite structures. A model with the nonlinear finite element theory was used to calculate some solid rocket motor case. Excellent agreement was found between the numerical results amd the tested ones. This method can be used to analyze the structure of filament wound composites. |
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| Keywords: | composite failure analysis nonlinearity finite element |
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