...Takehisa Yamada; Mitsuru Ohata This study aims to propose the damage model based on of the mechanism for ductile fracture related to void growth and to confirm the applicability of the proposed model to ductile crack growth simulation for steel. To figure out void growth behavior, elastoplastic...

... pipes has been developed by conducting nonlinear parametric analysis followed by nonlinear regression analysis. First, our previously validated extended finite element method (XFEM) model was used to demonstrate the applicability of the XFEM in simulating full-scale ductile fracture response...

... condition but also the three-dimensional nature of the stress field considerably affects the ductile fracture toughness. Moreover, parallel finite element (FE) simulation of experiments were conducted and a hybrid experimental–numerical approach was used to calibrate the Mohr–Coulomb fracture criterion...

... of the material elements with the maximum void volume fraction matches well with that of the initiation of ductile fracture as observed in the experiments. Partial support of this work by the National Science Foundation under Grant No. DMI-0456755 is greatly appreciated. The support of Dr. M. Li of TWB...

... fracture to become the prone failure mode. Moreover, code restrictions ( 1 ) imposed on specifying sufficient ductility and strain hardening capacity of both the line pipe steel and weld consumables further ensures a ductile fracture mode, as has been verified in several full scale tests ( 19 ). It is well...

... cycle on the fracture toughness during subsequent straining was observed. 17 09 2009 14 07 2010 04 04 2011 04 04 2011 ductile fracture fracture toughness pipelines plasticity steel tensile strength welding The reel-lay method illustrated in Fig. 1 is a cost...

... , 204 ( 2 ), pp. 104 – 111 . Otsuka , A. , Miyata , T. , Nishimura , S. , and Ohashi , M. , 1981 , “ Ductile Fracture, Brittle Fracture and Ductile-to Brittle Transition in Low Strength Steels ,” Trans. Jpn. Soc. Mech. Eng., Ser. A 0387-5008 , 47 ( 414 ), pp. 286 – 294...

... strength ductile fracture failure (mechanical) failure analysis pipelines plastic deformation axial deformation bending deformation buried pipelines experimental study fracture local buckling monotonic loading oil and gas post-buckling wrinkle Steel pipelines, either onshore...

... as ductile fracture (strain controlled type). Three-dimensional finite element-analyses are conducted. It was found that biaxial loading has a significant effect on the stress fields of through-thickness crack; the near-crack-tip stress is elevated to a large extent by biaxial loading. By contrast...

... approximate solutions. J -integral stochastic fracture polynomial dimensional decomposition Fourier-polynomial expansion pipe cracks ductile fracture ductility elastoplasticity Fourier analysis fracture mechanics pipes polynomials probability 26 12 2008 06 06 2009...

... on both the stress and strain state, and can be effectively predicted using the continuum damage models incorporating with the stress state effect. 30 01 2008 02 09 2008 20 04 2009 brittle fracture cracks ductile fracture ductile-brittle transition finite element analysis...

.... It is well known that thickness has a marked effect on ductile fracture toughness, with the apparent toughness increasing with decreasing thickness as plane stress conditions dominate the crack-tip fields rather than plane strain conditions. Plane strain and behavior dominate the crack-tip field...

... Characteristic Length ,” J. Mech. Phys. Solids 0022-5096 , 49 , pp. 2921 – 2953 . digital simulation ductile fracture ductility finite element analysis fracture mechanics fracture toughness mechanical engineering computing surface cracks crack tunneling constraint fracture criterion...

... methods ductile-brittle transition brittle fracture ductile fracture probability pipelines natural gas technology stress corrosion cracking In natural gas pipelines, there are many events that could lead to the initiation of an axial through-wall defect. For instance, stress corrosion...

...Y. Kim; Y. J. Chao; M. J. Pechersky; M. J. Morgan Elastic-plastic crack front fields in arc-shaped tension specimens (C-specimens) were analyzed by a three-dimensional finite element method. The effect of side grooves on the ductile fracture behavior was investigated by studying the J-integral...