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拉延筋是板料成形中的重要控制手段。以有限元数值模拟作为学习样本，利用神经网络的 Ｂ Ｐ模型建立了拉延筋工艺效果预测系统。结果表明，神经网络在拉延筋工艺效果预测方面具有重要的应用价值。
Drawbead is an important control in sheet metal forming. Taking finite element numerical simulation as learning sample, a prediction system of drawbead process effect was established by using B P model of neural network. The results show that the neural network has important application value in the prediction of drawbead process effect.