| 固体火箭发动机轴向冲击响应有限元分析 |
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| 引用本文： | 张燕琦,徐秉恒.固体火箭发动机轴向冲击响应有限元分析[J].固体火箭技术,2006,29(6):400-403. |
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| 作者姓名： | 张燕琦 徐秉恒 |
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| 作者单位： | 中国航天科技集团公司四院,西安,710025 |
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| 摘 要： | 对固体火箭发动机固有频率和模态进行了分析,用大质量法将轴向加速度冲击载荷转化为轴向力载荷对模型进行加载,计算了固体火箭发动机的轴向冲击响应,并与试验结果进行了对比分析。计算结果与试验吻合,说明大质量法加载可行。发动机壳体应力较其他部位大,但远未达到强度极限,药柱应变比其他部位大,但数值很小。
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| 关 键 词： | 固体火箭发动机 有限元法 冲击响应 大质量法 |
| 文章编号： | 1006-2793（2006）06-0400-04 |
| 收稿时间： | 2005-11-07 |
| 修稿时间： | 2006-02-16 |
Finite element analysis on axial impact response for solid rocket motor |
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| ZHANG Yan-qi,XU Bing-heng.Finite element analysis on axial impact response for solid rocket motor[J].Journal of Solid Rocket Technology,2006,29(6):400-403. |
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| Authors: | ZHANG Yan-qi XU Bing-heng |
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| Institution: | The Fourth Academy of CASC, Xihn 710025, China |
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| Abstract: | Natural frequency and modal of solid rocket motor(SRM) were analyzed,the model was by means of transforming axial acceleration impact load into axial force load by big mass method.The dynamic response of SRM under axial impact load was calculated,and the calculated results agreed well with test results through contrast.It is proven that big mass method is applicable.Stress of motor case is bigger than that of other part,but far from the strength limit.Strain of propellant grain is bigger than that of other part,but the value is very small. |
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| Keywords: | solid rocket motor finite element method impact response big mass method |
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