摘要
采用有限元分析方法,应用ANSYS软件分析容器法兰联接的强度,建立计算模型,施加边界条件并进行求解,得到螺栓联接结构的应力分布情况。该模型充分考虑了螺栓联接结构的应力集中,垫片材料的非线性性质和各元件间的接触关系的影响。分析结果显示,预紧和内压工况时,螺栓法兰连接件整体和各元件应力分布趋势基本一致,螺栓受到轴向的拉应力,螺母与法兰环接触受到压紧应力,产生应力集中,法兰环有从内向外张开的趋势。
The finite element analysis method is used,the stress of vessel's flanged connection is analyzed with ANSYS Software,calculation model is built,boundary condition is applied to find solution,and the stress distribution of bolt connection is obtained.This model adequately considered the influences of the stress concentration of bolt connection structure,the non-linear property of gasket material and the contacting of components.The analytical result shows,under the preloading and internal loading condition,the stress distribution trench of whole bolt flanged connecting parts and all the components are basically consistent,the bolt are under axial tensile stress,the contact of nut and flange ring are subjected to the compression stress,which result in the trends of stress concentration and the flange ring opening outward.
出处
《炼油与化工》
2012年第2期8-11,57,共4页
Refining And Chemical Industry
关键词
螺栓
联接
法兰
载荷步
有限元
bolt
connection
flange
load step
finite element
作者简介
李敏，女，教授，2005年毕业于哈尔滨工程大学，博士学位，现从事过程装备与控制工程专业教学与科研工作。
