【摘要】 为了探讨拉深孔成形技术对提高板料成形性能的有效性,以圆筒形件为研究对象,研究了拉深孔成形条件下的成形性能。采用数值模拟、人工神经网络和遗传算法进行板材成形工艺参数优化,得到了最优化的压边力和拉深孔相对密度等拉深工艺参数。根据优化后的结果设计并完成了相关的工艺实验,取得了与有限元模拟相一致的结果,证明了拉深孔成形技术是一种提高板材成形性能的行之有效的方法。更多还原

【Abstract】 To discuss the validity of drawing hole forming technique in improving the sheet metal forming capability,a cylinder part was used to study the forming capability under drawing hole forming conditions.finite element modeling(FEM),artificial neural network(ANN)and genetic algorithm(GA)were used to proceed sheet forming processing parameter optimization,and the optimum processing parameters such as the blank holding force and drawing hole relative density were obtained.Physical experiment was performed and the results are according with that of the numerical simulation.It is confirmed that Drawing Hole Forming Technique is an effective method for improving the sheet metal drawing ability.更多还原