With the drawing force acting on the blank across drawbeads numerically simulated by the elastico-plastic large deformation FEM, not only the distribution of drawing force in different areas of the blank as it passes ...With the drawing force acting on the blank across drawbeads numerically simulated by the elastico-plastic large deformation FEM, not only the distribution of drawing force in different areas of the blank as it passes through drawbeads during the deformation, but also the approximate drawbead resistance force and punch force can be seen so that drawbead resistance force and parameters of drawbeads can be separately studied.展开更多
In this paper, we study mixed elastico-plasticity problems in which part of the boundary is known, while the other part of the boundary is unknown and is a free boundary. Under certain conditions, this problem can be ...In this paper, we study mixed elastico-plasticity problems in which part of the boundary is known, while the other part of the boundary is unknown and is a free boundary. Under certain conditions, this problem can be transformed into a Riemann-Hilbert boundary value problem for analytic functions and a mixed boundary value problem for complex equations. Using the theory of generalized analytic functions, the solvability of the problem is discussed.展开更多
文摘With the drawing force acting on the blank across drawbeads numerically simulated by the elastico-plastic large deformation FEM, not only the distribution of drawing force in different areas of the blank as it passes through drawbeads during the deformation, but also the approximate drawbead resistance force and punch force can be seen so that drawbead resistance force and parameters of drawbeads can be separately studied.
基金the National Natural Science Foundation of China(No.10471149,10671207)the Postdoctoral Science Foundation of China(No.2005037447)
文摘In this paper, we study mixed elastico-plasticity problems in which part of the boundary is known, while the other part of the boundary is unknown and is a free boundary. Under certain conditions, this problem can be transformed into a Riemann-Hilbert boundary value problem for analytic functions and a mixed boundary value problem for complex equations. Using the theory of generalized analytic functions, the solvability of the problem is discussed.
