摘要:
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2519铝合金是一种新型的装甲材料。变形时, 各热力学参数之间存在着非常复杂的非线性关系。本文采用Gleeble 1500热模拟机上圆柱体轴对称高温压缩试验数据建立了该合金本构关系神经网络模型。利用所建立的网络模型对其他一些热力学状态下材料的流变应力进行了预测, 发现预测数据与实验数据吻合良好 (总拟合度为2 6%), 表明该本构关系神经网络模型有较高的预测精度。
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The aluminum alloy of 2519 is a new material for armory useThere are very complex nonlinear relations among the thermal dynamical parameters in the process of deformingAn artificial neural network model for constitutive relationship is constructed with the compressing experimental data of cylinder specimens at elevated temperatures on the Gleeble 1500 thermal simulatorFlow stress of the material under various thermal dynamics conditions have been predicted by the network model, and the predicted data fit well with the experimental data (fitness is 26%)The results show that the artificial neural network model for constitutive relationship has higher predicted precision
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基金项目:
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湖南省教育厅划块项目 (03C485)
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作者简介:
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参考文献:
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