| 延伸喷管延展撞击动力学分析 |
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| 引用本文： | 宋金松,刘勇琼,尤军峰,徐秉恒,何树范.延伸喷管延展撞击动力学分析[J].固体火箭技术,2003,26(4):22-25. |
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| 作者姓名： | 宋金松 刘勇琼 尤军峰 徐秉恒 何树范 |
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| 作者单位： | 中国航天科技集团公司四院四十一所,西安,710025 |
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| 摘 要： | 运用MARC软件对某发动机延伸喷管进行了非线性瞬态动力学分析，得到出口锥与延伸锥延伸过程仅经受撞击力作用下的变形及应力随时间的变化情况。对接合部位的密封圈进行了大变形处理，并在计算过程中对网格进行了重新划分。计算结果表明，该喷管出口锥与延伸锥结构是安全的，但考虑到材料性能的波动，安全余量较小，应从设计上保证产品的可靠性。该计算方法对延伸喷管的设计具有指导意义。
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| 关 键 词： | 延伸喷管 撞击动力学 MARC软件 强度分析 延伸锥 出口锥 发动机 应力 应变 |
| 文章编号： | 1006-2793(2003)04-0022-04 |
| 修稿时间： | 2002年11月25 |
Dynamic analysis for the nozzle with extendible exit cone(NEEC) in expanding and withstanding collision |
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| SONG Jin-song,LIU Yong-qiong,YOU Jun-feng,XU Bing-heng,HE Shu-fan //The st Institute of Fourth Academy of CASC,Xi'an,China..Dynamic analysis for the nozzle with extendible exit cone(NEEC) in expanding and withstanding collision[J].Journal of Solid Rocket Technology,2003,26(4):22-25. |
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| Authors: | SONG Jin-song LIU Yong-qiong YOU Jun-feng XU Bing-heng HE Shu-fan //The st Institute of Fourth Academy of CASC Xi'an China |
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| Institution: | SONG Jin-song,LIU Yong-qiong,YOU Jun-feng,XU Bing-heng,HE Shu-fan //The 41st Institute of Fourth Academy of CASC,Xi'an710025,China. |
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| Abstract: | The nonlinear dynamic analysis for the nozzle with extendible exit cone (NEEC) is described by using MARC software.The stress and strain of the exit cone(EC) and the extendible exit cone (EEC) along with time under the collision load during NEEC extending are successfully obtained. The seal deformation belongs to the large strain question and automatic remeshing is used in the dynamic analysis. According to the computed result ,the structure of NEEC is safe ,but its safety margin is small, so the safety of the product should also be ensured through the design.This paper is available for guidance to the design of NEEC. |
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| Keywords: | collision stress strain extendible nozzle extendible cone exit cone |
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