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针对非对称薄壁构件在常规成形过程中材料流动控制困难，易引发破裂或起皱的问题，提出一种基于分区域磁流变液软模调控的半球形件拉深成形方法。通过铁芯与线圈组合在成形区域构建梯度磁场，实现软模性能的差异化调控，并开展了Al1060-O板材半球形件拉深成形试验与有限元模拟研究。结果表明：分区域软模调控可显著影响试件构形、应变分布与材料流动行为；随着输入电流增大，最大等效应力与应变极值区域由成形区域中心向铁芯侧转移，材料流入比在10 A时达到2.116,有效促进了板材成形区域的非对称流动；同时，整体应力分布更加均匀，壁厚减薄得到有效控制。
Abstract：To address the problem of difficult material flow control, which easily leads to fracture or wrinkling in conventional forming processes for asymmetric thin-walled components, a deep drawing forming method of hemispherical part based on subregional magnetorheological fluid flexible-die control was proposed. The iron core and coil system were used to construct a gradient-differentiated magnetic field in the forming area, enabling differential control of the flexible-die performance. Experimental and finite element simulation studies on the deep drawing forming of Al1060-O sheet hemispherical parts were conducted. The results show that subregional flexible-die control can significantly influence the specimen configuration, strain distribution and material flow behavior. With the increase of excitation current, the regions of the maximum effective stress and extreme strain shift from the center of forming area towards the iron core side. The material inflow ratio reaches 2.116 at 10 A, thereby effectively promoting asymmetric material flow in the sheet forming area. Concurrently, the overall stress distribution becomes more uniform, and wall thickness reduction is effectively controlled.
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基本信息:
中图分类号:TG386
引用信息:
[1]王朋义,金一淳,左鹏,等.分区域软模调控下铝合金半球形件拉深过程的非均匀变形行为[J].塑性工程学报,2026,33(08):45-51.
基金信息:
国家自然科学基金资助项目(52575413;51805309); 陕西省自然科学基础研究计划(2025JC-YBMS-370); 陕西省科技创新团队(2023-CX-TD-16)
2026-08-21
2026-08-21
2026-08-21