| 引用本文： |
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蒙上阳,唐国金,雷勇军.固体火箭发动机人工脱粘层最佳深度的获取方法[J].广西科学,2004,11(2):106-108,112. [点击复制]
- Meng Shangyang,Tang Guojin,Lei Yongjun.A Method of Obtaining the Suitable Debonded Length of the Stress Release Boot of Solid Rocket Motor[J].Guangxi Sciences,2004,11(2):106-108,112. [点击复制]
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| 摘要: |
| 基于三维线性粘弹性有限元方法,利用MSC/NASTRAN有限元分析软件,以某含伞盘的星形与圆柱形组合药型的发动机为例,对温度载荷作用下发动机前人工脱粘层的深度进行调整.通过建立各种脱粘层深度发动机的三维有限元模型,计算在温度载荷作用下脱粘层不同深度时伞盘最大Von Mises应变值.根据最大VonMises应变变化的规律,结合生产实际找出人工脱粘层的最佳深度. |
| 关键词: 固体火箭发动机 人工脱粘层 最佳深度 粘弹性 有限元法 |
| DOI： |
| 投稿时间：2003-10-08修订日期：2004-01-02 |
| 基金项目:国防科技大学预研基金(JC02-01-004)和湖南省自然科学基金(02 JJY2009)资助项目。 |
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| A Method of Obtaining the Suitable Debonded Length of the Stress Release Boot of Solid Rocket Motor |
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Meng Shangyang1,2, Tang Guojin1, Lei Yongjun1
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| (1.College of Aerospace and Material Engineering, National Univ of Defence Technology, Changsha, Hunan, 410073, China;2.Guilin Military College, Guilin, Guangxi, 541002, China) |
| Abstract: |
| The stress release boot is always used in the solid rocket motor grain to relieve stress strain concentration under thermal loading. Determining the debonded length of the release boot is one of the important problems in the grain design. In this paper,a method of obtaining the suitable debonded length is present. The three-dimension viscoelastic finite element models of the motor grain with different debonded length are established. Under thermal loading,the strain field of the umbrella slot is studied. The results show that serious stress-strain concentrates in the umbrella slot tip. The maximum Von Mises strain of umbrella slot tip variation with the debonded release boot is obtained Then the suitable debonded length of the release boot could be determined This analytical method and these conclusions are useful in designing solid rocket motor. |
| Key words: solid rocket motor stress release boot suitable debonded length viscoelasticity finite element method |
