... be expressed as follows: The stress triaxiality is a crucial determinant influencing the fracture strain of ductile materials. The element is primarily subjected to tensile stress when the stress triaxiality of the element is positive. Conversely, r= n =i (n i =1 X i X )(Yi 1=( X i X )2 in Y) 1(Yi Y...

... girth weld damage model material property equivalent plastic strain triaxiality tensile strain limit inner haz flaw pipeline flaw piping design crack growth weld leakage Simulation-Based Design of Girth Welds of High-Pressure Pipeline to Improve Tensile Strain Limit for Leakage from Weld...

..., Jelovica, Romanoff, & Kurmiste, 2014), (Ehlers, Tabri, Romanoff, & Varsta, 2012), (St-Pierre, Deshpande, & Fleck, 2015), (Rubino, Deshpande, & Fleck, 2008)). romanoff design space crashworthiness plastic strain sandwich panel position 2 triaxiality optimization problem...

... cyclic loading plastic strain loading external surface mechanics displacement triaxiality evolution damage variable similarity center surface model ductile damage constitutive equation cumulative plastic strain upstream oil & gas boundary condition lemaitre accumulation extension...

.... Material modelling approaches are proposed to be applied in the numerical analysis. criteria loading condition accumulation asme bpvc viii-2 triaxiality stress state coppola criterion evolution asme bpvc asme bpvc section viii steel assessment cyclic loading condition offshore pipeline...

.... fracture characterization mechanics plastic strain finite element analysis criteria midstream oil & gas ductile fracture piping simulation initiation equivalent plastic strain stress triaxiality piping design triaxiality specimen weld displacement criterion hydraulic fracturing...

... developed in 70's and 80's and they have been serving the community well for more than three decades. wierzbicki stress triaxiality upstream oil & gas history hydraulic fracturing simulation offshore pipeline fracture model thickness stress state platform triaxiality fracture...

... stress-strain curve application procedure haz load-elongation curve weld specimen hydraulic fracturing direction transverse triaxiality tensile behaviour characterization Advanced Tensile Behaviour Evaluation of Girth Welds Andrea Fonzo, Gianluca Mannucci Centro Sviluppo Materiali S.p.A...

... for these joints were numerically determined. Triaxial stress distributions and equivalent plastic strains near weld toes in the chord around the brace were obtained from FE results. A uni-planar KK tubular joint specimen was tested under anti-symmetrical axial loads. During the test, the load-displacement curve...