摘要
目的研究在轴向荷载作用下形状记忆合金(SMA)管道接头的连接性能,为SMA管道连接件的设计提供依据.方法对SMA管道接头连接性能进行轴向拉伸试验,基于AURICCHIO提出SMA本构方程,采用ABAQUS有限元软件对SMA管道接头连接性能进行数值模拟研究.结果在SMA管道连接件两端与被连接钢管相接触的部位,发生应力集中现象.随着过盈量的增加或者管道连接件壁厚的增加,SMA管道连接件与被连接钢管之间的径向应力、管道接头的极限轴向拉伸荷载均随之增大.结论在SMA管道连接件的实际设计过程中,建议管道连接件与钢管的设计壁厚相等,过盈量控制在0.055 mm以内,并通过增加管道连接件轴向长度的方式来提高SMA管道接头的轴向拉伸强度.
To study the connection performance of SMA pipe joint for providing the reference to SMA pipe connector design,the axial tensile experiment and numerical simulation by ABAQUS were carried out,which based on the SMA constitutive equation proposed by AURICCHIO.The numerical simulation result shows that with the increase of interference amount or the increase of the wall thickness of SMA pipe connector,the radial stress on SMA pipe connector and connected steel pipe increases,besides the ultimate axial tensile load of SMA pipe joint increases.In addition,the stress concentration occurs on the end of SMA pipe connector in contact with steel pipe.In the process of SMA pipe connector design,it is suggested that the wall thickness of SMA pipe connector should be equal to that of steel pipe,and the interference amount should be controlled within 0.055 mm.Moreover,the ultimate axial tensile load of SMA pipe joint can be improved by means of increasing the axial length of SMA pipe connector.
作者
谷凡
宋景睿
侯钰鑫
张玲
GU Fan;SONG Jingrui;HOU Yuxin;ZHANG Ling(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第2期307-313,共7页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51308357)
辽宁省科技厅科学技术计划项目(2016010626)。
关键词
SMA管道接头
连接性能
轴向拉伸荷载
数值模拟
SMA pipe joint
connection performance
axial tensile load
numerical simulation
作者简介
谷凡(1973-),男,副教授,博士,主要从事结构工程和工程力学等方面研究。
