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[1]郑小涛,陈瑶,喻九阳,等.螺栓法兰连接系统的热应力场[J].武汉工程大学学报,2014,(06):37-40.[doi:103969/jissn16742869201406009]
　ZHENG Xiao tao,CHEN Yao,YU Jiu yang,et al.Thermal stress of bolted flanged system[J].Journal of Wuhan Institute of Technology,2014,(06):37-40.[doi:103969/jissn16742869201406009]
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螺栓法兰连接系统的热应力场(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年06期
页码:
37-40
栏目:
机电与信息工程
出版日期:
2014-06-30

文章信息/Info

Title:
Thermal stress of bolted flanged system
文章编号:
16742869(2014)06003704
作者:
郑小涛; 陈瑶; 喻九阳; 徐建民; 王成刚
化工装备强化与本质安全湖北省重点实验室（武汉工程大学），湖北 武汉 430205
Author(s):
ZHENG Xiaotao; CHEN Yao; YU Jiuyang; XU Jianmin; WANG Chenggang
Hubei Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety（Wuhan Institute of technology）,Wuhan 430205,China
关键词:
螺栓; 螺母; 温度场; 热应力
Keywords:
bolt; nut; temperature field
分类号:
TH131.3
DOI:
103969/jissn16742869201406009
文献标志码:
A
摘要:
利用有限元软件ABAQUS建立了螺栓法兰连接系统的实体模型，采用热结构耦合分析方法，研究了法兰公称直径为100 mm的螺栓法兰系统的温度场及其应力场，以及在预紧力和温度梯度操作条件下螺栓等效应力、轴向应力、径向应力和切向应力的变化关系.结果表明，温度场对螺栓轴向两端的应力影响较大，当内壁温度为100 ℃时螺栓头靠近法兰一侧的等效应力增加了250 MPa，螺栓上靠近法兰一侧的螺纹的等效应力增加100 MPa，而温度场对螺栓远离法兰一侧的螺纹的应力影响很小，说明设计时应重点考虑热应力对靠近法兰一侧的螺纹与螺栓头的影响.
Abstract:
The real model of bolted flanged system was established by finite element software ABAQUS.The temperature field and stress field of bolted flanged system were analyzed using thermalstructure coupling analysis.Changes of equivalent stress，axial stress，diameter stress and tangential stress of bolt under combined preload and temperature gradient were studied.Results show that the temperature field significantly increases the stress at two ends of bolt;the maximum equivalent stress at bolt head closing to flange increases 250 MPa and equivalent stress of thread in bolt closing to flange increases 100 MPa when the inner wall temperature is 100℃;temperature field has few influences on stress at thread which is away from flange in bolt.It illustrates that the influences of thermal stress on bolt closing to flange should be stressed in engineering design.

参考文献/References:

［1］徐超，余绍荣.机械螺栓法兰连接的有限元力学模型比较研究［J］.机械设计与制造，2009(6):3739.XU Chao,YU Shaorong. Finite analysis of mechanical model of bolted flange connect［J］.Machinery Design & Manufacture,2009(6):3739.(in Chinese)［2］周芝庭，冯建芬，谷春笑.基于ABAQUS螺栓接头的接触有限元分析［J］.金陵科技学院学报，2008(12):912.ZHOU Zhiting,FENG Jianfen,GU Chunxiao.Analysis of sealing performance of flange coupling based on ABAQUS［J］.Journal of JinLing Institute of Technology,2008(12):912.(in Chinese)［3］柯尊凤，邓华荣.短应力线轧机拉杆有限元分析［J］.冶金设备，2010(2):3537.KE Zunfeng,DENG Huarong.Finite element analysis of tension rod for shortstresspath mill［J］.Metallurgical Equipment,2010(2):3537.(in Chinese)［4］刘攀，金挺，毛庆.反应堆压力容器法兰螺纹应力集中系数［J］.核动力工程，2011（2）:912.LIU Pan,JIN Ting,MAO Qing.Analysis on fatigue strength reduction factor of reactor pressure vessel flange thread［J］.Nuclear Power Engineering,2011(2):912.(in Chinese)［5］冯军军，刘麟，顾伯勤.基于ABAQUS的承受外弯矩作用的螺栓法兰连接的参数化研究［J］.润滑与密封，2010（10）:5558.FENG Junjun,LIU Ling,GU Boqin.Parametric study of the bolted flanged connections subjected to external bending moments based on ABAQUS［J］. Lubrication Engineering，2010（10）:5558.(in Chinese)［6］卢均臣.基于蠕变的高温法兰强度［D］.上海：华东理工大学,2011.LU Junchen.Strength and sealing analysis of flange at high temperature based on creep［D］. Shanghai:East China University of Science and Technology,2011.(in Chinese)

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备注/Memo

备注/Memo:
收稿日期：20140518基金项目：国家自然科学基金资助项目(51305310)；湖北省教育厅科学研究计划项目(Q20131506)作者简介：郑小涛（1982），男，湖北武汉人，讲师，博士.研究方向：结构完整性方面的教学和研究工作.
更新日期/Last Update: 2014-07-29