DP980高级高强度钢弯曲回弹对产品精度的影响

IF 1.1 Q3 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Slovaca Pub Date : 2019-09-25 DOI:10.12776/ams.v25i3.1306

Hu Le, D. Vu, Phuong Thi Doan, Kien Trung Le

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引用次数: 3

摘要

回弹是金属板成形中的一种常见现象，在这种现象中，当施加的载荷被去除时，材料会发生弹性恢复。回弹导致成形形状偏离预期的设计几何形状。这种现象可能受到几个因素的影响，对弯曲角度和弯曲曲率都有影响。本研究的目的是确定不同的刀具半径和冲头与模具之间的间隙对DP980高级高强度钢（AHSS）板材弯曲回弹的影响。实验研究与商业ABAQUS软件中的有限元方法相结合，以确定回弹后的弯曲角度。为了预测弯曲过程中的回弹，材料特性由Ludwik-Hollomon定律和Hill’48准则定义。在轧制方向发生弯曲的情况下，实验结果与数值模拟结果吻合良好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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EFFECT OF SPRINGBACK IN DP980 ADVANCED HIGH STRENGTH STEEL ON PRODUCT PRECISION IN BENDING PROCESS

Springback is a common phenomenon in sheet metal forming, in which the material undergoes an elastic recovery as applied loads are removed. Springback causes the forming shape to deviate from the intended design geometry. This phenomenon, which can be influenced by several factors, effects on both bending angle and bending curvature. The aim of this study is to determine the influence of different tool radius and the gap between punch and die on springback in bending of DP980 Advanced High-Strength Steels (AHSS) sheet. Experimental studies are combined with FEM method in commercial ABAQUS software to determine the bending angle after springback. To predict springback in bending process, the material properties are defined by Ludwik - Hollomon law, combined with the Hill’48 criterion. Experimental results are in good agreement with numerical simulations in case of bending in the rolling direction.

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来源期刊

Acta Metallurgica Slovaca METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

2.00

自引率

30.00%

发文量

审稿时长

12 weeks