磁流变液
材料科学
金属薄板
反向
成形工艺
变形(气象学)
液压成形
拉深
流变学
过程(计算)
一致性(知识库)
磁场
机械
复合材料
结构工程
计算机科学
几何学
工程类
数学
管(容器)
阻尼器
物理
操作系统
量子力学
作者
Yuanyuan Mu,Feng Li,Chao Li,Zhenyu Liu,Jie Xu
标识
DOI:10.1177/09544054211053736
摘要
At the Magnetic field condition, the surface quality of formed parts can be improved significantly. To investigate the technical advantages of Magnetorheological (MR) fluid as a soft media, eliminate the defects of the parts because of the complex deformation, such as wrinkling, cracking, and over thinning. A new method of sheet deep drawing forming with MR fluid through inverse bulging pre-forming was proposed, which has made the wall thickness distribution more uniform and changed the stress distribution of sheet by changing the rheological property of MR fluid. The theoretical pressure transfer model of MR fluid as media and the configuration model of inverse bulging pre-forming are established. It can be concluded that the relationship between bulge height and load time have been shown consistency compared with experimental results and agree well with the theoretical analysis. And the configuration model have shown good agreement from the experiments results and the numerical results espectively with theoretical results. The uniformity of the wall thickness and the surface quality of the deep-drawn parts are improved significantly with the increase of the inverse bulging height. When the inverse bulging height is about 9 mm, the pre-forming effect is optimal, which provides theoretical guidance and is of much potential to the forming of the and thin-walled complex parts in industry fields.
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