| 固体火箭发动机柔性接头拉伸载荷下强度分析 |
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| 引用本文： | 刘勇琼,尤军锋.固体火箭发动机柔性接头拉伸载荷下强度分析[J].航空动力学报,2003,18(2):264-268. |
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| 作者姓名： | 刘勇琼 尤军锋 |
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| 作者单位： | 航天科技集团公司四院四十一所,陕西西安710025 |
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| 摘 要： | 柔性接头是固体火箭发动机摆动喷管的执行部件,由若干同心的环状球体的弹性件、增强件以及前后法兰相互交替地粘接在一起而成,采用轴对称有限元法对柔性接头在拉伸载荷下进行了强度分析,得到了在0.5MPa弹射压强的拉伸载荷作用下柔性接头应力分布,由此计算弹性件与增强件之间界面最大拉应力及层间剪应力分别为2.34MPa和0.28MPa,界面粘接强度满足使用要求。
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| 关 键 词： | 航空、航天推进系统 固体火箭发动机 强度分析 柔性接头 有限元法 |
| 文章编号： | 1000-8055(2003)02-0264-05 |
| 收稿时间： | 2002/3/25 0:00:00 |
| 修稿时间： | 2002年3月25日 |
Strength Analysis of SRM Flexible Joint under Tensile Load |
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| Institution: | The 41st Institute of the Fourth Academy of CASC,Xi'an710025,China |
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| Abstract: | The solid rocket motor (SRM) flexible joint is the main part of the flexible bearing nozzle that allows nozzle to deflect in any given direction for motor thrust vector control.It consists of elastomer rings,reinforcement rings,front and rear flanges which are concentric spherical sections bonded.The finite element method is used to analyze the strength of flexible joint under tensile load.The stress field of flexible joint under 05 MPa distributing tensile load is acquired.Because the maximal tensile stress and layer shear stress at the interface between elastomers and reinforcement rings are 234 MPa and 028 MPa respectively,thus the strength of bonded interface can satisfy the design need. |
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| Keywords: | aerospace propulsion solid rocket motor strength analysis flexible joint finite element method |
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