simulation of crack growth behavior in residual stress field of welding

the residual stresses generated due to welding in pressure components may have several harmful effects such as decrease in the resistance to cycling load and corrosive environments in this projects the element interaction technique for simulation of welding process for inconel 600 and A285 grade C steel by the help of ABAQUS software and fortran programing language is used in this technique the elements of the weld pool are held in place in contact with the elements of the base plate and the interaction is made to be a function of time this gave several flexibilities in modeling the welding process the simulation of welding of inconel 600 material is only used for verification of our written user subroutines by comparison with other works the predicted residual stresses for A 285 grade C were then considered in stress intensity factor calculations using a three dimensional finite element alternating model FEAM for investigating crack growth behavior for small elliptical surface cracks.

Keywords:

residual stress , elemtnt interaction technique , stress intensity factor , crack growth behvior