基于响应面法的挡风梁冲压回弹预测模型

Prediction Model of Punching Springback of Windshield Beam Based on Response Surface Method

摘要:

以5182铝合金挡风梁成形后的回弹为研究对象，通过单向拉伸试验，获取了5182铝合金板料在不同轧制方向及应变速率条件下的真实应力-应变曲线，并将其引入数值模拟模型，研究了板料成形速度、模具间隙、摩擦系数对5182铝合金挡风梁成形回弹的影响规律并分析了其形成原因。然后根据响应曲面法建立了5182铝合金挡风梁回弹预测模型，进而通过不同条件下的实验对比，对该预测模型进行了验证。研究结果为铝合金板料回弹的分析提供了新的思路。

Abstract:

Considering the springback of 5182 aluminum alloy wind beam as the research object, the real stress-strain curves of 5182 aluminum alloy sheet under different rolling directions and strain rates were obtained through one-way tensile test, and introduced into the numerical simulation mode. The influence of sheet metal forming speed, die clearance, and friction coefficient on the springback of 5182 aluminum alloy windshield beams was studied and the formation mechanisms were analyzed. According to the response surface method, the prediction model of 5182 aluminum alloy windshield beam springback was established. The prediction model was verified by experiments under different conditions. The research provides a new method for the analysis of aluminum alloy sheet springback.