Ductile Fracture Simulation of Structural Steels under Monotonic Tension

Simulation of ductile fracture in welded tubular connections using a simplified damage plasticity model considering the effect of stress triaxiality and Lode angle

“…To optimize the calibration process, previous researchers select the material parameters corresponding to the best fit between a large number of numerical simulations and the tension tests [10,25,26]. However, this method requires very detailed finite element models and becomes impractical for engineering and field applications.…”

“…The damage-mechanics based models aim, instead, to develop a relationship between the damage variable and some measurable engineering parameters, in order to utilize the cumulative damage to predict the onset of fracture. Previous researchers [8][9][10] have proposed various fracture models (VGM model and the extended models) to predict the fracture initiation. These fracture models have addressed the influence of stress triaxiality (also known as the constraint effect) on the fracture strain in ductile solids.…”

“…If m is equal to 1, the damage accumulation rule becomes a linear function as shown in Eq. (3), which is widely used by many researchers [9,10,28],…”

A model of one-surface cyclic plasticity with Lemaitre damage criterion for plastic instability prediction in the incremental forming process

“…These experimental tests were previously performed by Jia et al [38,39] and, cylindrical specimens were cut from a JIS SS400 steel sheet. In their tests, Table 1 Parameters of constitutive models.…”

Damage index for crack initiation of structural steel under cyclic loading

“…Ductile fracture under monotonic loading has been investigated by a number of researchers, e.g., [3][4][5][6][7][8], while studies on ductile fracture under cyclic loading are still limited [9][10][11][12], especially for the transition between fatigue fracture and ductile fracture.…”