Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Experimental Study and Finite Element Analysis on Stress Concentration of the Weld Toe of Tube in We
DOI:
10.16355/j.cnki.issn1007-9432tyut.2019.01.019
Received:
Accepted:
| Corresponding author | Institute | |
| LEI Honggang | College of Architecture and Civil Engineering,Taiyuan University of Technology |
abstract:
In this study,the stress concentration characteristics of the weld toe of tube in joints were studied by conducting experiments and finite element analysis.The results show that the vertical stress,radial stress and hoop stress on the weld toe of tube were all tensile stress.The vertical stress was the highest one,the hoop one was about half of the vertical one,the radial one is the lowest.The hot spot stress of the weld toe of tube increased with increase of outer diameter of hollow sphere and thickness of tube.It decreased with increasing thickness of hollow sphere,outer diameter of tube,and size of fillet weld.A formula was developed for calculating the hot spot stress concentration factor of the weld toe of tube,which is helpful for the fatigue design method of the weld toe of tube in the welded hollow spherical joint using the hot spot stress amplitude as a parameter.
Keywords:
grid structures with welded hollow spherical joints;the wold of steel tube;hot spot stress;experimental study;finite element analysis