تلخیص
Welding residual stresses are considered one of the most
insidious forms of stresses which can affect integrity of structures.
Residual stresses are difficult to measure physically and estimate
theoretically. High tensile stresses can often lead to loss of
performance in corrosion, fatigue and fracture. This paper
presents development of a Finite Element Model using
commercially available tool SYSWELD, to analyze the effect of
changing filler configuration on the nature of welding residual
stresses and distortion in S355J2G3 material. An S355J2G3 plate
of 250x100x3mm dimensions is butt welded without filler and with
ER70S6 filler.
The results have been experimentally verified to validate the
developed Finite Element Model. Blind hole drilling method is
used for the measurement of residual stresses experimentally. The
results indicate quite high tensile residual stresses developed in the
molten zone for welding the plate without filler as compared to the
case for welding with ER70S6 filler. A lesser distortion results
when S355J2G3 plate is welded autogenously. The experimental &
finite element analysis results show good agreement for the
predicted residual stresses and distortion.
Muhammad Faisal Nadeem, Bilal Ahmed. (2019) Thermo-Mechanical Modelling and Experimental Verification of Distortion and Residual Stress for S355J2G3 Plate Welded by using Different Filler, Journal of Space Technology , Volume 9, Issue 1.
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