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Minimization of welding distortion and buckling : modelling and implementation /
Welding is a cost-effective and flexible method of fabricating large structures, but drawbacks such as residual stress, distortion and buckling must be overcome in order to optimize structural performance. Minimization of welding distortion and buckling provides a systematic overview of the methods...
| Clasificación: | Libro Electrónico |
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| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Cambridge :
Woodhead Publishing Ltd,
2011.
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| Colección: | Woodhead Publishing in materials.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Cover; Minimization of welding distortion and buckling: Modelling and implementation; Copyright; Contents; Contributor contact details; Part I Understanding welding residual stress and distortion; 1 Introduction to welding residual stress and distortion; 1.1 Types of welding distortion; 1.2 Formation of welding distortion; 1.3 Distortion control methods; 1.4 Book outline; 1.5 References; 2 Understanding welding stress and distortion using computational welding mechanics; 2.1 Introduction; 2.2 The Satoh test; 2.3 Thermomechanical analysis of welding problems.
- 2.4 Eulerian and Lagrangian reference frames2.5 Nonlinear heat conduction; 2.6 Nonlinear deformation; 2.7 Finite-element techniques in computational welding mechanics (CWM); 2.8 Heat input models; 2.9 Material models; 2.10 References; 3 Modelling the effects of phase transformations on welding stress and distortion; 3.1 Introduction; 3.2 Types of transformation; 3.3 Transformation strains; 3.4 Equilibrium phase diagrams; 3.5 Continuous cooling transformation (CCT) diagrams; 3.6 Significance of transformation temperature; 3.7 Metallurgical zones in welded joints.
- 3.8 Effects of phase transformations on residual stresses in welds3.9 Transformation plasticity; 3.10 Current status of weld modelling; 3.11 References; 4 Modelling welding stress and distortion in large structures; 4.1 Introduction; 4.2 Three-dimensional applied plastic strain methods; 4.3 Application on a large structure; 4.4 Conclusions; 4.5 References; 5 Using computationally efficient, reduced-solution methods to understand welding distortion; 5.1 Introduction; 5.2 Context and rationale for reduced-solution methods.
- 5.3 Computationally efficient solutions based on mismatched thermal strain (MTS) and transverse contraction strain (TCS) algorithms5.4 Verification of MTS and TCS algorithms; 5.5 Multiple welds; 5.6 Fillet welds; 5.7 Hybrid and stepwise strategies; 5.8 Selected case studies; 5.9 Future trends; 5.10 Sources of further information and advice; 5.11 References; Part II Minimizing welding distortion; 6 Minimization of bowing distortion in welded stiffeners using differential heating; 6.1 Introduction; 6.2 Welding-induced residual stress and bowing distortion.
- 6.3 Mitigation of welding-induced bowing distortion6.4 Experimental Verification of transient differential heating; 6.5 Results; 6.6 Conclusions; 6.7 References; 7 Minimizing buckling distortion in welding by thermal tensioning methods; 7.1 Introduction; 7.2 A simplified finite-element model; 7.3 The dynamic thermal tensioning method; 7.4 Mitigating buckling distortion using the dynamic thermal tensioning method; 7.5 Conclusions; 7.6 References; 8 Minimizing buckling distortion in welding by weld cooling; 8.1 Introduction.