Optimal Shape Design of an Extrusion–Forging Die Using a Polynomial Network and a Genetic Algorithm
Optimal Shape Design of an Extrusion–Forging Die Using a Polynomial Network and a Genetic Algorithm
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DOI：
10.1007/s001700200134
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
C. Wu;Y. Hsu
中科院分区：
文献类型：
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作者：
C. Wu;Y. Hsu
本文的目的是在考虑金属流动变形的影响下，获得一种最佳的挤压-锻造模具形状。采用有限元法综合分析了不同模具形状对挤压锻造变形的影响。采用多项式网络建立了模型，并采用遗传算法对挤压锻模形状进行优化。通过模型和实验的反复交叉验证，有限元分析结果与多项式网络的预测结果误差很小。本文的变形分析结果和模具形状优化设计方法可推广到更复杂的锻模设计中。这将有利于锻造行业。
The objective of this paper is to obtain an optimal die shape in consideration of the influence of metal flow deformation in the extrusion–forging processes. The finite-element method was used to analyse comprehensively the effects of different die shapes on extrusion–forging deformation. A polynomial network was used to construct the relationship model and a genetic algorithm was used to obtain the optimal shape of the extrusion–forging die. Through repeated cross-verifications of modelling and experiment, the errors between the results of the finite-element analysis and the prediction of the polynomial network are very small. The result of the deformation analysis and the optimal design approach to die shape in this study could be extended to the design of a more complicated forging die. This would be beneficial to forging industries.