Based on the upper bound limit analysis theorem and the shear strength reduction technique,the equation for expressing critical limit-equilibrium state was empl
Based on the boundary integral method,a 3D bubble breakup model in a narrow flow field is established,and a corresponding computation program is developed to si
By using the rigid-visco-plasticity finite element method,the welding process of aluminum porthole die extrusion to form a tube was simulated based on Deform-3D