摘要
讲课的技巧电磁铆接技术是近些年来新兴的铆接技术，这种技术是通过储存在电容里的电能产生电流放电，放电的电流通过线圈，在线圈周围会产生变化的磁场，而驱动片处于变化的磁场中则会产生感应电动势，最后驱动片与线圈之间产生涡流斥力这样的原理来工作。电磁铆接的过程是瞬时冲击载荷打击铆钉，铆钉在遵照材料的动力学的特性发生了塑性变形，电磁铆枪则是这种工艺在实际生产中的应用设备。电磁铆接技术在国外已经被广泛的应用了，尤其是航空航天领域。国内电磁铆接技术由于发展较晚，仍处在探索阶段，因此设备仍存在铆接力不足，后坐力较大，铆枪笨重不方便等问题。
本文首先介绍了电磁铆接技术在国内外的发展现状及电磁铆接设备在工作时的工作原理，分析了国内现阶段一些电磁铆枪存在的问题，并对已有的电磁铆枪进行分析总结，深入探究其特点及优势。
将放电回路等效为双回路放电模型，通过理论分析计算出放电电流；通过提取磁感应强度而进行磁压力计算；分析应力波的传播方式；分析质量块弹簧阻尼系统的基本原理，从而设计后坐力减震系统。
利用松散耦合的方法对铆枪工作的整个过程进行模拟，利用ANSYS数值模拟软件建立电磁场模型，通过建立电流密度进行加载分析。并将电磁场模型结果做为边界条件，在LS-DYNA模块中，建立铆钉变形分
析模型及后坐力分析模型。对电磁力在驱动片上的分布及铆钉的变形规律进行分析。通过调整电压，电容，驱动片厚度等参数来实现电磁铆接的最优参数。为电磁铆枪的设计提供依据。
使用solidwork软件对电磁铆枪进行三维造型，根据数值模拟和理论计算的结果设计并加工制造了轻量化电磁铆枪，经过试验调整铆枪的各个参数，使铆枪的重量和铆接力达到最优参数。组装后铆枪整体的质量为2.8 kg，操作人员可以手持加工；可成形Φ6mm高强度的铝合金铆钉；使用了压电石英力传感器对电磁铆枪的后坐力进行了测试，在能够打击Φ6mm高强度的铝合金铆钉的情况下，测量得铆枪的最大的平均冲量为3N·S，远远低于国家对于操作人员后坐力的要求标准的9.8 N·S，因此对操作人员的安全和健康不会产生任何影响。
关键词：电磁铆接；航空航天；电磁铆枪；数值模拟；后坐力
Abstract
Electromagnetic riveting technology is a new kind of riveting technology, which generates electric current through the electric energy stored in the capacitor, the current generates a magnetic field when passing through the coil, the varying magnetic field produces an induced electromotive force o
n the drive plate, and finally drive between the coil and the coil Repulsion of such a way to work.Electromagnetic riveting cracks the rivet through the instantaneous impact load, and the rivet is deformed by the dynamic characteristics of the material under the stress wave.The technology of electromagnetic riveting gun is the application equipment in actual production, and has been widely ud in aerospace field.Domestic electromagnetic rivet gun is still in the exploration stage becau of its late development, so there are some problems such as lack of riveting force, large recoil force, inconvenient and inconvenient.
This paper first introduces the development status and working principle of electromagnetic riveting at home and abroad, analyzes the problems of some electromagnetic riveting guns at the domestic stage, and analyzes and summarizes the existing electromagnetic riveting guns, and further explores its characteristics and advantages.
Theoretical analysis of electromagnetic riveting gun. The discharge circuit is equivalent to the double model, and the discharge current is solved; The magnetic pressure is calculated by extracting the magnetic induction strength; The propagation mode of stress wave in circular bar is analyzed. This paper introduces the basic principle of the spring damping system, and then designs the recoil damping system.
The electromagnetic riveting process is simulated by quential coupling method, and the electromagnetic coupling model excited by current density is established by ANSYS software. Taking this as the boundary condition, the rivet deformation analysis model and recoil force analysis model are established in ANSYS/LS-DYNA module. The distribution of the electromagnetic force on the drive plate and the deformation law of rivets are analyzed. The optimal parameters of electromagnetic riveting are achieved by adjusting the parameters such as voltage, capacitance and thickness of drive slice. It provides the basis for the design of electromagnetic riveting gun.
Using SOLIDWORKS software to make the 3d modeling of the riveting gun,
firmicutes
according to the numerical simulation and theoretical calculation, the lightweight hand-held electromagnetic riveting gun was designed and manufactured, and the various parameters of the riveting gun were adjusted, so that the weight and riveting force of the riveting gun reached the optimal parameters. The mass of the asmbled rivet gun is 2.8 kg, and the operators can handle it with hands; The aluminum alloy rivets with high strength of 4mm can be formed. The recoil force of the electromagnetic rivet gun was tested using a piezoelectric quartz force nsor. The maximum av
erage impul of the rivet gun was 3N • s, which was much lower in the ca of aluminum all oy rivets capable of striking Φ6 mm high stre ngth The 9.8 N • s of the standard requirements for the operator's recoil for the operator does not have any effect on the safety and health of the operator.
Keywords：Electromagnetic riveting；Aerospace field；Electromagnetic riveter；
Numerical simulation；Recoil
目录
摘要 ............................................................................................................... I V Abstract ............................................................................................................... V 第1章绪论 (1)
1.1引言 (1)
1.2电磁铆接设备的工作原理及工艺特点 (2)
1.2.1电磁铆接设备的工作原理 (2)
1.2.2电磁铆接设备的优势 (3)
1.3国内外电磁铆接设备的发展现状及趋势 (4)
1.3.1国外电磁铆接设备的发展现状 (4)
1.3.2国内电磁铆接设备研究进展 (6)
1.4目前电磁铆枪制造过程中存在的问题 (8)
1.5本文的主要研究内容 (9)
第2章电磁铆接过程有限元分析 (11)
2.1引言 (11)
2.2磁压力转换理论依据 (12)
2.3电磁铆接耦合场的数值模拟 (13)
2.3.1电磁场分析模型 (13)
学做咖啡>小学英语教学案例
2.3.2铆钉应力应变分析模型 (16)
2.3.3铆枪结构场分析模型 (18)
2.4有限元数值模拟结果分析 (20)
2.4.1电磁场结果 (20)
2.4.2铆钉变形应力应变场分析 (23)
2.4.3铆枪后坐力减震系统结构场分析结果 (27)
2.5本章小结 (27)
第3章轻量化电磁铆枪的设计 (29)
3.1 引言 (29)
3.2铆枪的设计准则 (29)
3.2.1动力系统结构设计准则 (30)
3.2.2后坐力减震系统设计准则 (30)
3.3手持式电磁铆枪的结构 (32)
3.3.1铆枪枪体结构 (32)
3.3.2动力系统结构 (33)安徽省2011年高考分数线
3.4 后坐力减震系统结构 (40)
3.4.1质量块的设计 (40)
3.4.2弹簧的设计 (42)prepare的用法>cinema
3.4.3阻尼器的选择 (43)
3.5其它部件 (44)英语六级范文
苏州培训中心3.5.1后盖 (44)
3.5.2 外壳 (44)
3.6铆枪装配 (45)
3.7本章小结 (46)
第4章电磁铆枪的性能测试 (47)
4.1 引言 (47)
4.2试验条件 (47)
4.2.1试验设备 (47)
4.2.2 后坐力测试 (48)
4.2.3试验工装 (49)德瑞姆心理培训
4.3铆接试验 (50)
4.3.1试验准备 (50)
4.3.2铆接试验与结果分析 (51)
4.3.3电磁铆枪后坐力测试结果分析 (52)
4.4本章小结 (53)
结论 (54)
参考文献 (55)
(59)
致谢 (60)
