| 随机有限元法及喷管扩张段结构可靠性分析 |
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| 引用本文： | 刘勇琼,汪亮.随机有限元法及喷管扩张段结构可靠性分析[J].固体火箭技术,1997,20(1):31-35. |
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| 作者姓名： | 刘勇琼 汪亮 |
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| 作者单位： | [1]中国航天工业总公司四院四十一所 [2]西北工业大学 |
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| 摘 要： | 推导了考虑材料性能及载荷随机扰动的有限元基本公式，通过随机有限地分析，可得到结构位移和应力的均值与方差，为结构可靠性提供了数据。采用随机有限元法对固体火箭发动机喷管扩张段进行了结构可行性分析，算例表明，该方法简单、实用。
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| 关 键 词： | 结构可靠性 喷管 固体推进剂 火箭发动机 |
Stochastic Finite Element Method and Structural Reliability Analysis for the Exit Cone of Solid Rocket Nozzle |
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| Liu Yongqiong.Stochastic Finite Element Method and Structural Reliability Analysis for the Exit Cone of Solid Rocket Nozzle[J].Journal of Solid Rocket Technology,1997,20(1):31-35. |
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| Authors: | Liu Yongqiong |
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| Abstract: | The stochastic finite element considering the random disturbances of the material properties and the lond is formulated, through the stochastic finite element analysis, the mcans and veriances of the displacements and stresses of the structures can be obtained. Based on the stochastic finite element method, the structural reliability analysis for the exit cone of solid rocket nozzle is presented. |
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| Keywords: | Finite element method Structurai rellability Nozzle Solid propellant rocket engine |
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