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针对目前塑性加工参数优化研究中,有限元分析方法效率低,可靠性差,通用性不强等现状,将国际上著名的大型通用非线性有限元软件MARC与先进的非线性约束优化问题的解法——改进的约束变尺度算法相结合,开发了一个可用于塑性加工参数优化的软件,并应用于轴类大锻件拔长工艺的V型砧形状角度优化.优化结果与实验结果吻合较好,证明了该系统的可靠性.它还表明改进的约束变尺度算法具有较高的计算效率,可以搜索到工程全局最优解.文中所提出的曲线V型砧对圆形坯料具有较好的孔洞闭合效果.本系统的开发为塑性加工参数优化的研究开辟了一个新思路.
In view of the current plastic processing parameters optimization research, finite element analysis method is inefficient, poor reliability, low universality and other current status, the internationally renowned large common nonlinear finite element software MARC and advanced nonlinear constrained optimization problem solution - An improved constrained scaling algorithm was developed to optimize the shape parameters of the V-shaped anvil for large-scale shaft forgings.The optimization results are in good agreement with the experimental results The reliability of the system is also shown.It also shows that the improved constrained scaling algorithm has higher computational efficiency and can search for the global optimal solution of the project.The curved V-shaped anvil presented in this paper has good hole closure for the round billet Effect.The development of this system has opened up a new idea for the research of plastic processing parameter optimization.