Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2009.1331.1337Vakili-TahamiF.SorkhabiA.H.D.7200997In this study, a numerical method is presented to study
the thickness effect on the residual stress states in butt-welds in 2.25Cr1Mo
plates. Using finite element based software ANSYS, coupled thermal-mechanical
three dimensional (3D) finite element models have been developed. The
finite element models are employed to evaluate the transient temperature
and the residual stress fields during welding. Also, in this study the
variations of the physical and mechanical properties of the material with
temperature have been taken into account. Results show that by increasing
plate thickness, the residual stresses increase and the residual stress
affected zone (distance with significant amount of residual stress) becomes
larger. It has been shown that the longitudinal residual stress in weld
axis, change from compressive to tensile stress by increasing plate thickness.]]>Kelly, F. and R.D. Joseph,1993Bang, B., Y. Son, K. Oh, Y. Kim and W. Kim,2002Chang, P.H. and T.L. Teng,2004Deng, D. and H. Murakawa,2008Deng, D. and H. Murakawa,2006Francis, J.A., H.K.D.H. Bhadeshia and P.J. Withers,2007Hibbitt, H.D. and P.V. Marcal,1973Kou, S.,2003Lee, Ch.H. and K.H. Chang,2007Leggatt, R.H.,2008Mannan, S.L. and K. Laha,1996Messler, R.W.,2004Murugan, S., S.K. Rai, P.V. Kumar, Y. Kim, W. Jayakumar, B. Raj and M.C.S. Bose, 2001Parmar, R.S.,1999Richards, D.G., P.B. Prangnell, S.W. Williams and P.J. Withers,2008Sabapathy, P.N., M.A. Wahaba and M.J. Painter,2000