STRENGTH OF T JOINT BY FILLET WELD : A study on beam-to-column connections by fillet weld (Part 1)

In this paper, tensile tests were carried out to investigate elastic-plastic behavior of fillet weld. When the fillet weld size is enough (more than 0.7 times plate thickness), specimens with base metal thickness 12mm failed in base metal. Finite element analyses assuming plane strain state are carried out. Test results can be simulated by the analyses. In the limit analysis based on the slip line fields theory, mechanism of fillet weld assumed as the shear line connecting a root to a toe of fillet weld was derived. Analytical results agree with the test results.