DP800高强钢筒形件流动旋压成形过程及旋压力分析

发布时间：2018-06-21 16:35

本文选题：DP高强钢 + 筒形件　；参考：《锻压技术》2017年02期

【摘要】：基于ABAQUS/Explicit平台,建立了双旋轮筒形件流动旋压成形有限元数值模拟模型,分析了DP800高强钢筒形件流动旋压成形过程的应力应变分布规律,并研究了旋轮成形角、旋轮圆角半径、旋轮进给比和壁厚减薄率4个关键工艺参数对DP800钢筒形件流动旋压力的影响。结果表明:等效应力和等效应变的最大值出现在旋轮与坯料接触区,已成形区域的应力均匀;工件外表面的等效应变均大于工件内表面等效应变,并沿着厚度方向逐渐减小;各旋压分力大小顺序为:径向旋压力轴向旋压力切向旋压力;随着圆角半径、旋轮进给比、壁厚减薄率的增大,各向旋压分力和总旋压力都呈增大趋势;随着成形角的增大,轴向旋压力和切向旋压力呈增大趋势,但径向旋压力和总旋压力呈先减小后增大趋势。
[Abstract]:Based on Abaqus / explicit platform, the finite element numerical simulation model of flow spinning forming of double-rotating cylindrical parts is established. The distribution of stress and strain in the flow spinning process of DP800 high strength steel cylindrical parts is analyzed, and the forming angle and radius of rotary wheel are studied. The influence of four key technological parameters on the flow pressure of DP800 steel cylinder is the feed ratio of the rotary wheel and the thinning ratio of the wall thickness. The results show that the maximum of equivalent stress and equivalent strain appear in the contact region between the wheel and the blank, the stress in the formed area is uniform, the equivalent strain on the outer surface of the workpiece is larger than the equivalent strain on the inner surface of the workpiece, and gradually decreases along the direction of thickness. The order of each spinning force is as follows: radial rotary pressure, axial rotation pressure, tangential rotation pressure, with the increase of radius, feed ratio and wall thickness thinning ratio, the spinning force and total spinning pressure are all increasing with the increase of forming angle. The axial and tangential rotation pressure increased, but the radial spin pressure and total spin pressure decreased firstly and then increased.
【作者单位】：华南理工大学机械与汽车工程学院;宝山钢铁股份有限公司研究院;
【基金】：国家自然科学基金资助项目(51375172)
【分类号】：TG306

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