Measurement and FEM analysis of three dimensional residual stresses in fillet welds of stainless and mild steel clad plates

Abstract

In this paper, the detailed residual stresses in stainless and mild steel clad plates made by rolling are measured by the layer removal method. Welding residual stresses in fillet welds of clad plates are then measured by experiment using inherent strain as a parameter and computed by FEM (Finite Element Method). Finally, the effects of restraint in the fillet welding of chemical tanks on welding residual stresses are analyzed.

ステンレス鋼と圧延軟鋼のクラッド板での詳細な残留応力を層剥離法で測定する。次いで、クラッド板のすみ肉溶接での残留応力を、固有歪をパラメータとして用いる実験によって測定し、有限要素法(FEM)で計算する。最後に化学薬品貯槽のすみ肉溶接での拘束の溶接残留応力に及ぼす効果を解析する。