Stiffness Improvement of Stamping Die by Means of Topology Optimization
Stiffness Improvement of Stamping Die by Means of Topology Optimization
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DOI：
10.4028/www.scientific.net/amr.939.266
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
H. Hamasaki;Masayoshi Nakazono;R. Hino;F. Yoshida;H. Manabe;Hiroki Kondo;V. Toropov
中科院分区：
文献类型：
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作者：
H. Hamasaki;Masayoshi Nakazono;R. Hino;F. Yoshida;H. Manabe;Hiroki Kondo;V. Toropov
采用有限元仿真与拓扑优化相结合的方法，在不增加重量的情况下实现了780MPa级高强钢板冲压模具的刚度提高。在程序的第一步中，为了评估冲压结束时模具表面的接触力，对冲压过程进行了有限元模拟。随后，在规定的重量约束下进行拓扑优化，得到给定力和位移边界条件下最刚性的模具结构。将优化后的模具与经验丰富的工程师设计的模具在冲压过程中的最大位移进行了比较。结果表明，在两种模具的总重量几乎相同的情况下，优化后的模具比另一种模具变形更小。
Stiffness improvement of stamping die without weight increase 780MPa grade high strength steel sheet was achieved by using Finite Element (FE) simulation combined with topology optimization. In the first step of the procedure, FE simulation of a stamping process was conducted in order to evaluate the contact force on a die surface at the end of stamping. Subsequently, topology optimization was carried out subject to the prescribed weight constraint, in which the stiffest die structure for the given force and displacement boundary conditions was obtained. Maximum displacements during stamping between thus optimized die and the one designed by the experienced engineer were compared. It was found that the optimized die showed less deformation than the other even if the total weights of both dies were almost the same.