This book studies the flow of materials and the influence of strain rates on the relationship between imposed stresses and the dynamic deformations obtained. It provides applications for shaping, molecular molding, shrink-fit assembly and welding, including details of the various specific processes for implementation at high strain rates, illustrated by numerous industrial examples.
Rheology, Physical and Mechanical Behavior of Materials 2 presents studies on the dynamic behavior of materials when subjected to mechanical, electromagnetic and electrohydraulic actions. The topics covered include dynamic structural memory, molecular molding, shaping, assembly and welding.
It is aimed at researchers involved in the mechanics of deformable media, as well as industrial design and manufacturing departments.
Table of Contents
Preface ix
Chapter 1 Dynamics from Electromagnetic Effects 1
1.1 Electromagnetic shocks and applications 1
1.1.1 Introduction 1
1.1.2 Electromagnetic shocks 2
1.1.3 Magnetic field and induced current in metals 9
1.1.4 Current and magnetic field measurement 18
1.1.5 Skin thickness 19
1.1.6 Electromagnetic pressure 20
1.1.7 Orders of magnitude of the magnetic field and the electromagnetic energy density to obtain a deformation 21
1.2 Deformation by electromagnetic pulses 23
1.2.1 Displacement, kinetic energy and deformation rate 23
1.2.2 Pulse of the electromagnetic stress 31
1.2.3 Publications 43
Chapter 2 Dynamics from Electrohydraulic Effects 59
2.1 Introduction 59
2.2 Forming tanks 60
2.3 The electrohydraulic effect 62
2.3.1 Primary shock wave and secondary pressure waves 65
2.4 Actions of the wave pressures in the fluid: fluid-plate acoustic effect 69
2.4.1 Fluid-plate interaction 69
2.5 Electrohydraulic forming 73
Chapter 3 Elastic Limit Deflection, Plastic Hinge, Dynamics of Movement 77
3.1 Plastic bending 77
3.1.1 Case: doubly symmetrical shaped section beam 77
3.1.2 Any potential section with double symmetry 78
3.2 Plastic hinges 82
3.2.1 The case of rectangular beams or sheets 83
3.2.2 Dynamic in distributed loading of rectangular beams or sheets 91
3.2.3 Bending of circular plates: bending of symmetrically uniformly loaded circular plates 102
3.2.4 Electrodynamics and hydrodynamics of plates 117
Chapter 4 Dynamic Actions, Technologies and Applications 125
4.1 Mechanical shocks 125
4.1.1 Structural memory 125
4.1.2 Dynamic powder compacting, sintering 138
4.2 Electromagnetic shocks and applications 169
4.2.1 Shock inductors 169
4.2.2 Dynamic assemblies 192
4.3 Dynamic plating solders 208
4.3.1 Introduction 208
4.3.2 Magnetic welding 211
4.3.3 Plate dynamics 216
4.3.4 Micrographs of the solders obtained by the electromagnetic impact and an analysis of the connection 219
4.3.5 Electrohydraulic soldering 221
Appendices 227
Appendix A: Electromagnetism 229
Appendix B : Joining, Dynamic Hooping: Transmissible Force and Torque 257
Appendix C: Tables of Characteristics of Metals 273
Appendix D: Publications 281
References 303
Index 305
