Mines Metallic Microlattice Structures

Manufacture, Materials and Application
1. Auflage 2019
ISBN: 978-3-030-15232-1
Verlag: Springer International Publishing
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 115 Seiten

Reihe: SpringerBriefs in Applied Sciences and Technology

This work reviews the current state of the art in metallic microlattice structures, manufactured using the additive manufacturing processes of selective laser melting, electron beam melting, binder jetting and photopolymer wave guides. The emphasis is on structural performance (stiffness, strength and collapse). The field of additively manufactured metallic microlattice structures is fast changing and wide ranging, and is being driven by developments in manufacturing processes. This book takes a number of specific structural applications, viz. sandwich beams and panels, and energy absorbers, and a number of conventional metallic materials, and discusses the use of additive manufactured metallic microlattice structures to improve and enhance these structural performances. Structural performances considered includes such non linear effects as plasticity, material rupture, elastic and plastic instabilities, and impact loading. The specific discussions are put into the context of wider issues, such as the effects of realisation processes, the effects of structural scale, use of sophisticated analysis and synthesis methodologies, and the application of existing (conventional) structural theories. In this way, the specific discussions are put into the context of the emerging general fields of Architectured (Architected) Materials and Mechanical Metamaterials.

Autoren/Hrsg.

Mines, Robert

Inhaltsverzeichnis

1;Preface;6
2;Contents;9
3;Notation;12
4;1 Introduction and Overview;14
4.1;References;18
5;2 Some Fundamental Structural Ideas for Conventional Metallic Lattice Structures;19
5.1;2.1 Lattice Structures as a Structural Cellular Material;19
5.2;2.2 General Nomenclature for Lattice Structures;21
5.3;2.3 Lattice Structures as Core Materials in Sandwich Panels;22
5.4;2.4 Impact Energy Absorption in Metallic Structures;24
5.5;2.5 Conclusions;26
5.6;References;26
6;3 Additive Manufacturing Processes and Materials for Metallic Microlattice Structures Using Selective Laser Melting, Electron Beam Melting and Binder Jetting;28
6.1;3.1 Selective Laser Melting (SLM);28
6.2;3.2 SLM Laser Scan Strategy and Microstrut Quality;31
6.3;3.3 Electron Beam Melting (EBM) Process;34
6.4;3.4 Materials used in Selective Laser Melting and Electron Beam Melting Processes;34
6.5;3.5 Binder Jetting (BJ) Approach;36
6.6;3.6 Amorphous Metals (Metallic Glasses);38
6.7;3.7 Additive Manufacture in Metals Using Multiple Materials;39
6.8;3.8 Conclusions;39
6.9;References;40
7;4 Parent Materials and Lattice Characterisation for Metallic Microlattice Structures;43
7.1;4.1 Micro Strut Tensile Tests (Static);43
7.2;4.2 Micro Strut Tensile Tests (Dynamic);47
7.3;4.3 Microlattice Block Characterisation (Static and Dynamic);48
7.4;4.4 Conclusions;56
7.5;References;57
8;5 Theory, Simulation, Analysis and Synthesis for Metallic Microlattice Structures;59
8.1;5.1 Finite Element Modelling—Beam Elements;59
8.2;5.2 Finite Element Modelling—Solid Elements;62
8.3;5.3 Finite Element Modelling—Homogenised and Continuum Approaches;64
8.4;5.4 Analytic Modelling of Microlattice Structures;65
8.5;5.5 Synthesis of Microlattice Topologies;66
8.5.1;5.5.1 Optimisation for a Specific Stress State, e.g. Compression and Shear;66
8.5.2;5.5.2 Optimisation for a Specific Structural Element, e.g. Three Point Bend Beam;67
8.5.3;5.5.3 Optimisation for a Combination of Structures, e.g. Core Skin;67
8.5.4;5.5.4 Optimisation for Specific Applications, e.g. Distributed Load in Bracket;68
8.5.5;5.5.5 Optimisation for Non Linear Behaviour;68
8.6;5.6 More General Approaches: Optimisation Methods, Use of Voxels, Multi-Functionality;70
8.7;5.7 Lattice Generation Software;71
8.8;5.8 Conclusions;73
8.9;References;73
9;6 Photopolymer Wave Guides, Mechanical Metamaterials and Woven Wire Realisation Methods for Metallic Microlattice Structures;76
9.1;6.1 Photopolymer Wave Guides;76
9.1.1;6.1.1 Multi Scale Metallic Microlattices;80
9.1.2;6.1.2 Mechanical Metamaterials;81
9.2;6.2 Woven Metal Wire;82
9.3;6.3 Conclusions;82
9.4;References;82
10;7 Applications for Additively Manufactured Metallic Microlattice Structures: Core Materials in Beams and Panels, Energy Absorbers (Static and Impact);84
10.1;7.1 Core Materials in Beams;84
10.2;7.2 Core Materials in Panels and Wing Sections;89
10.3;7.3 Energy Absorption in Solid and Hollow Strut Lattices;93
10.4;7.4 Energy Absorption in Surface Based Lattices;97
10.5;7.5 Quantification of Improvements in Structural Performance;100
10.6;7.6 Conclusions;100
10.7;References;102
11;8 Conclusions from the Book: Themes, Future Research Strategies;105
11.1;8.1 The Five Themes;105
11.1.1;8.1.1 The Enhancement of Specific Structural Performance Using Additive Manufacturing;105
11.1.2;8.1.2 Integration of Manufacturing, Materials and Application;106
11.1.3;8.1.3 Existing and Developing Structural Theories;106
11.1.4;8.1.4 Specific Issues Versus the General Field (Architectured Cellular Materials, and Industrial Processes);107
11.1.5;8.1.5 Fundamental Ideas Underlying Computer Based Realisation Methods;108
11.2;8.2 Some Suggestions for Future Research;109
11.3;8.3 An Alternative Approach: The Investigation of the Design (Property) Space for Selected Structural Applications;110
11.4;8.4 Overall Conclusions from the Book;111
11.5;References;114