| 刘战伟*,吕新涛,陈喜民,谢惠民.基于多级电磁发射的mini-SHPB装置[J].实验力学,2013,28(5):557~562 |
| 基于多级电磁发射的mini-SHPB装置 |
| On the Mini-SHPB Device Based on Multi-Level Electromagnetic Emissions |
| 投稿时间：2012-12-12 修订日期：2013-04-23 |
| DOI：10.7520/1001-4888-12-187 |
| 中文关键词: 电磁驱动技术 微型分离式Hopkinson压杆装置 动态力学性能 高应变率 |
| 英文关键词:electromagnetic driving technique mini-split hopkinson pressure bar (SHPB) device dynamic mechanical properties high strain rate |
| 基金项目:国家自然科学基金重点项目(11232008)、面上项目(11072003)、北京市自然基金面上项目(3122027) |
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| 中文摘要: |
| 由于微小型试件动态力学性能研究的重要性与测试的困难性，以及高应变率动态试验研究的需要，研制了基于磁阻式多级电磁发射的微型霍普金森压杆(mini-SHPB)装置。该装置由新型微型霍普金森压杆系统与磁阻式多级电磁发射系统组成。利用电磁脉冲发射原理，巧妙地设计了简单易行的磁阻式多级线圈发射系统，为微型霍普金森压杆系统的撞击杆提供驱动力。文中详细描述了该系统的各部分组成和原理，整个系统简单紧凑。通过应变率不敏感材料2024铝合金的动态压缩试验验证了该装置的可靠性。 |
| 英文摘要: |
| Taking into account of the importance and testing difficulty for dynamic mechanical property of miniature specimen and from the needs of material dynamic test at high strain rate, a miniature split-Hopkinson pressure bar (Mini-SHPB) device was self-developed based on multi-level electromagnetic emission technique. It consists of a miniature SHPB system and a multi-level electromagnetic emission system. According to the electromagnetic pulse emission principle, a magnetoresistive multi-layer coil emission system was designed, which provides driving for strike bar of miniature SHPB system. Composition and principle of two systems are described in detail in this paper. Self-developed Mini-SHPB device has a compact structure. Impact compression test for 2024 aluminum alloy (strain rate insensitive material) was performed to verify the reliability of Mini-SHPB device. |
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