【摘要】 针对当前航空航天领域对复杂截面整体空心构件的迫切需求，提出了一种基于磁流变弹性体（Magnetorheological elastomer,MRE）的新型管材介质压力成形技术。分别从磁流变弹性体的制备、力学特性的理论分析及试验评测、成形工艺开发及模具设计、有限元建模和仿真及在异形管件成形中的应用等多个方面的研究进行了系统介绍。结果表明，该技术通过借助外加磁场的辅助作用，实现管材内部成形压力的差异化调控，有效促进材料流动，同时能够避免液压成形过程中管材的高压密封难题，未来有望为航空航天用大变径比金属空心构件的整体精密成形提供前瞻性技术支持。更多还原

【Abstract】 Based on the desperate demand for the complicated hollow part with large diameter ratio in aerospace,a novel tube forming technology based on magnetorheological elastomer(MRE) is proposed. The paper systematically introduced the preparation of MRE, the theory of compression mechanical property of MRE and experimental testing, the development of forming process and the design of tools, construction of finite element(FE) model and FE simulation, the application of the technology in forming complicated tube. The obtained results show that the novel technology can realize the differential loading of the forming pressure to promote the flow of material and effectively resolve the sealing problem during tube hydroforming by applying external magnetic field. In the future, this novel technology may provide forward looking technical support to the integrated precise forming of complicated hollow part with large diameter ratio.更多还原