| 用于软材料的双子弹电磁驱动SHPB系统 |
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| 引用本文： | 谢倍欣,汤立群,姜锡权,史景伦,赵伟健,佘瀚笙,张泳柔,刘逸平,蒋震宇.用于软材料的双子弹电磁驱动SHPB系统[J].爆炸与冲击,2019,39(5). |
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| 作者姓名： | 谢倍欣 汤立群 姜锡权 史景伦 赵伟健 佘瀚笙 张泳柔 刘逸平 蒋震宇 |
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| 作者单位： | 华南理工大学土木与交通学院亚热带建筑科学国家重点实验室,广东广州510640;陆军炮兵防空兵学院,安徽合肥230031;华南理工大学电子与信息学院,广东广州510640 |
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| 基金项目： | 国家自然科学基金(11472109，11772134)；广东省自然科学基金(2015A030311046，2015B010131009) |
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| 摘 要： | 软材料的动态力学性能研究一直备受关注，目前分离式Hopkinson压杆(split Hopkinson pressure bar, SHPB)技术是其最重要的测试手段，然而在测试超软材料时实验装置设计方面仍存在许多有待改进之处。本文中研制了一套双子弹电磁驱动SHPB系统，使用聚碳酸酯作为杆件材料以克服软材料试件带来的诸多困难，引入了双子弹设计方案解决了电磁驱动方式难以应用于非铁磁材料的问题，并有效保证了子弹速度的准确控制。使用双子弹电磁驱动SHPB系统和传统金属SHPB装置同时对硅胶材料的动态力学性能进行了测试，实验结果的吻合性验证了本套系统的可靠性。应用双子弹电磁驱动SHPB系统开展了聚乙烯醇(polyvinyl alcohols, PVA)水凝胶这种超软材料在高应变率下的实验，成功表征出其动态力学性能。
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| 关 键 词： | 分离式Hopkinson压杆(SHPB) 电磁驱动 双子弹 软材料 |
| 收稿时间： | 2017-10-31 |
A double-striker electromagnetic driving SHPB system for soft materials |
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| Institution: | 1.State Key Laboratory of Subtropical Building Science, School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China2.Army Artillery and Air Defense Force Academy, Hefei 230031, Anhui, China3.School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China |
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| Abstract: | The dynamic mechanical properties of soft materials have attracted great attention, and the separated Hopkinson pressure bar (SHPB) technique is the most important test method at present. However, the SHPB technique still needs some improvements when it is applied to extra-soft materials. So, a double-striker electromagnetic driving SHPB system was developed. In the developed system, the bars were made of polycarbonate, and the double-striker scheme was designed to precisely control the velocities of the strikers. Both the aluminum SHPB facility and the double-striker electromagnetic driving SHPB system were employed to carry out dynamic experiments on the silicone, and the agreement between the test results by these two systems indicated the reliability of the innovative system. And dynamic mechanical properties of PVA hydrogels were successfully tested by the double-striker electromagnetic driving SHPB system. |
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