سال انتشار: ۱۳۸۴

محل انتشار: اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید

تعداد صفحات: ۹

نویسنده(ها):

A.A Akbari Mousavi – 1Dept. of Metallurgy and Material ScienceEngineering, Faculty of Engineering,University of Tehran, Tehran, Iran, P. O. Box: 11365-4563.
S.F Kashani Bozorg – Assistant Professor, School of Metallurgy and Materials Science, University College of Engineering, Universityof Tehran, Tehran, Iran
R Miresmaeili – M. Sc. Student, School of Metallurgy and Materials Science, University College of Engineering, University ofTehran, Tehran, Iran

چکیده:

Residual stresses were produced in the weldments due to mismatching and un-even distributions of non-elastic strains. In this paper, the effects of weld lengths and groove configurations on the residual stresses distributions were considered. Threedimensional thermo-mechanical constitutive equations were used to describe the behavior of the plates. Simulation results were compared with the X-ray diffraction measurements. The results showed that in the central region, the peak transverse tensile residual stresses decreased with the weld length and the peak longitudinal tensile residual stresses increased with the weld length. In addition, the simulation results predicted that residual stress distributions depended on the shape of the groove. The peak of the tensile residual stress obtained for the U-groove configurations was less than that calculated for the V-groove configurations. In additions, of those V-grooves investigated, the minimum tensile residual stress was obtained for the 50 degrees V-groove configuration.