Fracture mechanics analysis of a pipe elbow

Characterizing the crack initiation load in circumferentially through-wall cracked elbows under bending load

“…Taking advantage of symmetry, only a quarter model of the elbow has been used. It is reported [31] that an elbow model with one element in the wall thickness underestimates strains by about 9% in the local plastic zone. So, in the present analyses 20-noded hexahedral iso-parametric solid elements were used in the elbow model, with two elements in the thickness direction.…”

Characterization of plastic collapse load determination in circumferentially through-wall cracked elbows

“…Taking advantage of symmetry, only a quarter model of the elbow had been used. It is reported (Sauter et al, 1989) that in elbow model with one element in the wall-thickness underestimates the strains values by about 9% in the locally plasticized zone. So, in the present analyses twenty-noded hexahedral iso-parametric solid elements were used in the elbow model with two elements in the thickness direction.…”

Establishing a methodology to predict the crack initiation load in through-wall cracked components using tensile specimen test data

“…Taking advantage of symmetry, only an one-fourth model of the elbow has been used. It is reported [34] that an elbow model with one element in the wallthickness underestimates strains by about 9% in the local plastic zone. So, in the present analyses twenty-noded hexahedral isoparametric solid elements were used in the elbow model with two elements in the thickness direction.…”