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Finite Element Simulation and Research of Fine-blanking and Die Clearance

Author: LiLongRui
Tutor: ZhangXiangLin；XiaoXiangZuo
School: Huazhong University of Science and Technology
Course: Materials Processing Engineering
Keywords: fine-blanking FEA material flow blanking clearance ANSYS Workbench Development
CLC: TG386
Type: Master's thesis
Year: 2011
Downloads: 91
Quote: 2
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Abstract


Fine-blanking can not only make the parts have strong strength and stiffness, but also can improve the utilization of materials and service life. In order to improve the designers’efficiency and reduce the number of experiments, the numerical simulation of fine-blanking has been performed.Firstly, this paper presents the numerical simulation results of fine-blanking and die clearance using the rigid plastic finite element method(FEM) by the software DEFORM 2D. The material flow and section quality are investigated with respect to various blank holding forces, holding types, reverse punch force and blanking clearance by using the Normal C&L ductile fracture criteria. The results indicate that larger blank holding forces and reverse punch force can improve the hydrostatic pressure and restrain the production of crack. The size of the blank holding forces has litter influence on the flow of material when the punch enters into one-third of the material. It can reduce the total energy of the fine-blanking processes.Secondly, the numerical simulation of B9 parts has been performed by finite element software ABAQUS. It can predict the distribution area of punch stress successfully and provide advice for force loading during the finite element simulation of fine blanking.Finally, the fine blanking CAE analysis system has been developed in the ANSYS Workbench platform. The pre-processing time is one-third of it. This system can greatly reduce the reduplicate work when a lot of simulations are performed. On the other side the set of material and contact properties can be formed to specification.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Cold stamping process
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