基于MSC.Marc的固体发动机喷管非线性瞬态热结构耦合分析
裴少帅1,胡迎春2,高四良3
(1.西安航天动力技术研究所,陕西 西安 710025;2.广西师范大学职业技术师范学院,广西 桂林 541004;3.西安航天动力机械厂,陕西 西安 710025)
摘要:利用MSC.Marc软件对喷管进行了非线性瞬态热结构耦合分析。获得了喷管结构在工作过程中的温度和应力分布、零部件粘接界面工作情况、预留热膨胀间隙变化规律等。计算结果表明,依据常规设计方法设计的喷管方案结构质量有较大设计余量;喉衬与相邻材料的胶粘面在喷管工作中很快失效;喉衬与扩张段绝热层轴向端面对接间隙较小,在工作中会产生较大接触应力;收敛段与扩张段螺纹联接应力较小,有较高的设计可靠性。
关键词:喷管;热结构耦合;非线性瞬态分析
中图分类号:TN751.1;V214.4+3 文献标志码:A doi:10.3969/j.issn.1006-0316.2018.04.002
文章编号:1006-0316 (2018) 04-0006-05
Nonlinear Transient Thermal-Structure Coupling Analysis of Solid Rocket Motor NozzleBased on MSC.Marc
PEI Shaoshuai1,HU Yingchun2,GAO Siliang3
( 1.The Institute of Xi’an Aerospace Solid Propulsion Technology, Xi’an 710025, China; 2.Teachers College for Vocational and Technical Education, Guangxi Normal University, Guilin 541004, China;
3.Xi’an Aerospace Power Machinery Factory, Xi’an 710025, China )
Abstract:The nonlinear transient thermal-structure coupling analysis of nozzle is carried out by using MSC.MARC software. The temperature and stress distribution of nozzle structure in the working process and the bonding interface of the parts and the variation law of the reserved thermal expansion gap are obtained. The calculation results show that the design of nozzle scheme has the large designing allowance according to the conventional design method. The adhesive surfaces of the throat and the adjacent material are quickly ineffective in the working process. The axial expansion gap of the throat and the expansion section is smaller and so that the greater contact stress. The thread joint between the convergent section and the expansion section has the small stress of and the high design reliability. 
Key words:nozzle;coupling thermal structure;nonlinear transient analysis
———————————————
收稿日期:2017-11-16
基金项目:国家自然科学基金资助项目(51565007)
作者简介:裴少帅(1978-),男,陕西西安人,硕士,高级工程师,主要研究方向为固体发动机设计;胡迎春(1971-),女,江苏南京人,博士,教授,主要研究方向为算法与多学科优化设计、计算机图像处理等;高四良(1976-),男,陕西西安人,硕士,高级工程师,主要研究方向为机械系统设计。
 

 

设为首页  |  加入收藏    |   免责条款
《机械》杂志版权所有     Copyright©2008-2012 Jixiezazhi.com All Rights Reserved 

  电话:028-85925070    传真:028-85925073    E-mail:jixie@vip.163.com

地址:四川省成都锦江工业开发区墨香路48号   邮编:610063

Powered by PageAdmin CMS