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弹箭与制导学报 >

2019 , Vol. 39 >Issue 6: 150 - 154

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2019.06.033

高压载荷下柔性喷管的力学特性试验与有限元分析

  • 邹杰 ,
  • 郑庆 ,
  • 童悦 ,
  • 李修明 ,
  • 薛潇潇
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  • 上海航天动力技术研究所, 上海 201108

邹杰(1988-),男,湖北荆州人,工程师,硕士,研究方向:固体火箭发动机结构与热防护。

收稿日期: 2018-11-12

  网络出版日期: 2025-05-12

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Experiment Studies and Numerical Analysis of Flexible Nozzle with High Pressure

  • ZOU Jie ,
  • ZHENG Qing ,
  • TONG Yue ,
  • LI Xiuming ,
  • XUE Xiaoxiao
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  • Shanghai Space Propulsion Technology Research Institute, Shanghai 201108, China

Received date: 2018-11-12

  Online published: 2025-05-12

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摘要

为研究高压载荷下柔性喷管的力学特性,设计了以硅橡胶为弹性件的柔性接头,测试了其在12.3 MPa、±7°摆幅时的响应特性。根据超弹性材料应变能密度理论,通过试验获得了材料的ODGEN二阶本构方程系数,利用有限元分析为复杂工程问题的数值解法提供了参考。计算表明,弹性件应力集中区位于柔性接头0°和180°摆动平面,该区域是最先疲劳失效的区域,驱动接头转动的力主要是克服弹性件的剪切应力,其经向剪应力τ13远大于纬向剪应力 ${{\tau }_{1}}_{2}$。

关键词： 柔性接头; 摆动力矩; ODGEN本构模型; 剪切应力

本文引用格式

邹杰 , 郑庆 , 童悦 , 李修明 , 薛潇潇 . 高压载荷下柔性喷管的力学特性试验与有限元分析[J]. 弹箭与制导学报, 2019 , 39(6) : 150 -154 . DOI: 10.15892/j.cnki.djzdxb.2019.06.033

Abstract

To investigate the mechanical of flexible nozzle under high pressure load, a flexible joint with silicone rubber was designed.The dynamic characteristics of flexible joint under 12.3 MPa、swing amplitude ±7°was tested.According to the theory of strain energy density of hyperplastic material, Axial-tension and simple shear test were implemented to achieve 2nd order ODGEN behavior parameters.The finite element analysis was carried out to predict dynamic performance of flexible joint well.The maximum stress is in the 0°and 180°swing plane.The force that drives the flexible joint to rotate is mainly to overcome the shear stress of the elastic member, and the longitude shear stress is much larger than the latitude stress.

Key words： flexible joint; torque; ODGEN model; shear stress

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