自激励式电磁铆接放电电流分析

发布时间：2018-05-06 20:01

本文选题：电磁铆接 + 自激励式　；参考：《航空学报》2017年05期

【摘要】：电磁铆接是一种将电磁能转化为机械能的铆接工艺。传统感应式低电压电磁铆接存在能量利用率低、难以解决高强度大直径铆钉和难成形材料铆钉的铆接等问题。基于自激励式电磁铆接技术,建立放电电流分析模型,通过数值分析与工艺试验探讨自激励式电磁铆接进行大直径铆钉成形的可行性。研究结果表明建立的电磁铆接放电电流分析模型可实现传统感应式和自激励式电磁铆接放电电流分析,分析结果与试验吻合较好;放电能量相同时,自激励式电磁铆接的涡流斥力峰值要远大于感应式的涡流斥力,能有效提高能量利用率,是实现大直径铆钉成形的有效方式;在放电电压为320V时,自激励式电磁铆接可实现直径为10mm的45号钢铆钉的成形,其变形以绝热剪切的方式进行。
[Abstract]:Electromagnetic riveting is a riveting process that converts electromagnetic energy into mechanical energy. The traditional inductive low voltage electromagnetic riveting has low energy utilization ratio, so it is difficult to solve the problems of high strength large diameter rivets and difficult to form material rivets. Based on self-excited electromagnetic riveting technology, a discharge current analysis model is established, and the feasibility of large-diameter rivet forming with self-excited electromagnetic riveting is discussed by numerical analysis and process test. The results show that the analysis model of electromagnetic riveted discharge current can be used to analyze the discharge current of traditional inductive and self-excited electromagnetic rivets, and the analysis results are in good agreement with the test results, and when the discharge energy is the same, The peak value of eddy current repulsion force of self-excited electromagnetic riveting is much larger than that of inductive eddy current repulsion, which can effectively improve the energy utilization rate and is an effective way to realize the forming of large diameter rivets, and when the discharge voltage is 320V, The forming of 45 steel rivets with diameter of 10mm can be realized by self-excited electromagnetic riveting, and its deformation is carried out by adiabatic shear.
【作者单位】：福州大学机械工程及自动化学院;
【基金】：国家自然科学基金(50905032) 福建省教育厅省高校自然基金青年重点项目(JZ160417)~~
【分类号】：TG938

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