A time increment control for return mapping algorithm applied to cyclic viscoplastic constitutive models
Algorithms are proposed to control the time increment in viscoplastic FE analyses. Algorithms avoid important increase of time step during large viscoplastic evolutions. Control protocol enables an efficient computation of fatigue stressstrain loop. Control methods are positively tested for multi-axial and athermal loading conditions. Control algorithms are successfully tested for volume elements and structures.
viscoplasticity constitutive model fem analysis