| 含内聚空洞的固体发动机药柱结构完整性分析 |
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| 引用本文： | 蒙上阳,唐国金,袁端才,雷勇军.含内聚空洞的固体发动机药柱结构完整性分析[J].暨南大学学报,2005,26(1):64-68. |
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| 作者姓名： | 蒙上阳 唐国金 袁端才 雷勇军 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南,长沙,410073 |
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| 基金项目： | 湖南省自然科学基金(02JJY2009)资助项目 |
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| 摘 要： | 为评估固体发动机药柱含内聚空洞时的结构完整性，通过在药柱后部不同应变梯度的部位设置不同直径的内聚空洞，基于三维黏弹性有限元分析方法，计算了在燃气内压和轴向过载作用下发动机的应变场。由不同直径内聚空洞的最大Von Mises应变值随着直径变化的规律及最大Von Mises应变准则判断出内聚空洞位于药柱不同位置时允许的最大直径。
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| 关 键 词： | 固体发动机 黏弹性 有限元法 结构完整性 内聚空洞 |
| 文章编号： | 1000-9965(2005)01-0064-05 |
| 修稿时间： | 2004年6月14日 |
The structure integrity analysis of solid rocket motor grain with cohesive cavity |
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| MENG Shang-yang,TANG Guo-jin,YUAN Duan-cai,LEI Yong-jun.The structure integrity analysis of solid rocket motor grain with cohesive cavity[J].Journal of Jinan University(Natural Science & Medicine Edition),2005,26(1):64-68. |
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| Authors: | MENG Shang-yang TANG Guo-jin YUAN Duan-cai LEI Yong-jun |
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| Abstract: | Based on the structure integrity analysis of perfect solid rocket motor grain under internal pressure loading and axial acceleration loading, some positions are determined to presetting cohesive cavities in different strain grads of the rear motor grain. The three-dimensional viscoelastic finite element models of the motor grain with cohesive cavity are established. Under internal pressure loading and axial acceleration loading, the strain fields of the grain with cohesive cavity are studied. The maximum Von Mises strain of different regions and different diameter cohesive cavities are obtained. Then the allowable maximum diameter of the cohesive cavity could be determined by the maximum Von Mises strain criterion. |
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| Keywords: | solid rocket motor viscoelasticity finite element method structure integrity cohesive cavity |
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