Contents & References of Analysis of residual stresses caused by welding in plates with opening and hardening
List:
Chapter One - Introduction
1
1-1 Preface
1
1-2 Basics of welding
3
1-2-1 Definition of welding
3
1-2-2 types of welding joints
3
1-2-3 types of welding
4
1-2-4 groove welding
5
1-3 electric arc welding with coated electrode
6
1-4 Dissertation organization
7
Chapter Two - Thermal and Mechanical Analysis of Welding
8
2-1 Preface
8
2-2 Thermal Analysis
9
2-2-1 heat source
12
2-2-1-1 heat source efficiency
12
2-2-1-2 heat flux caused by the welding arc
13
2-2-1-3 Heat production rate
17
2-2-2 properties of matter in thermal analysis
18
2-2-3 phase change
18
2-2-4 boundary conditions
21
2-2-4-1 displacement heat loss
21
2-2-4-2 radiation heat transfer
22
2-2-4-3 heat flux
22
2-2-5 thermal analysis results
23
2-3 mechanical analysis
24
2-3-1 nonlinear analysis method in finite element method
25
2-3-1-1 Newton-Raphson method
26
2-3-2 material properties in analysis Mechanical
28
2-3-3 results of mechanical analysis
29
2-4 stresses caused by welding
29
Chapter three - stresses Residual due to welding (theoretical basics and history) 33 3-1 Preface 33 3-2 Longitudinal residual stresses due to welding 35 3-3 Transverse residual stresses due to welding
40
3-4 methods of determining residual stresses caused by welding
44
3-5 Investigating the history of the effect of a welding sequence on residual stresses caused by welding
49
3-5-1 History of thermal analysis
51
3-5-2 History of mechanical analysis
52
3-5-3 simulation results
52
3-5-4 comparison of results
54
3-6 simulation results of welding residual stress
56
3-7 Effect of welding direction on residual stress in multi-pass welding (one groove)
59
3-8 Residual stresses caused by welding for thick sheet with double-sided V-shaped groove
61
Chapter 4 - Modeling the welding process in ANSYS
70
4-1 Preface
70
4-2 Specifications required for analysis
70
4-2-1 Work piece geometry
70
4-2-2 Material Properties
71
4-2-3 Heat Source Characteristics
72
4-3 Thermal Analysis
72
4-3-1 Thermal Component
73
4-3-2 method of birth and death of components
75
4-3-3 thermal analysis results
77
4-4 mechanical analysis
79
4-4-1 mechanical component
80
4-4-2 modeling of residual stresses
80
4-4-2-1 Effects of meshing on residual stress results
81
4-4-2-2 Longitudinal residual stresses
83
4-4-2-3 Lateral residual stresses
84
Chapter Five - Opening plates
86
5-1 Preface
86
5-2 Specifications required for analysis
86
5-2-1 Work piece geometry
86
5-2-2 Material properties
87
5-3 Analysisp>87
4-5 mechanical analysis
91
5-5 effect of plate dimensions on residual stresses
93
Sixth chapter - Plates with hardening
96
6-1 Preface
96
6-2 specifications required for analysis
96
6-2-1 geometry of the workpiece
96
6-2-2 material properties
97
6-3 thermal analysis
97
6-4 mechanical analysis
101
6-5 Effect of plate dimensions on residual stresses
102
6-6 Effect of hardeners dimensions on residual stresses
103
6-7 Effect of distance of hardener from welding axis on residual stresses
106
6-7-1 Work piece geometry
106
6-8 Plates with expansion and hardening combination
109
6-8-1 Thermal analysis
110
6-8-2 Residual stresses in plates with expansion and hardening combination
111
Chapter Seven – Conclusion and suggestion for further research
112
7-1 Preface
112
7-2 Results
113
7-3 Suggestions for further research
114
References
115
Source:
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[11] Wismar, H.S., (2006). "Nonlinear finite element analysis", Faculty of mechanical engineering, technical university of Kosice, Slovakia, Vol. 32, pp. 9-16.
[12] Pilipenko, A., (2001). "Computer Simulation of Residual Stresses and Distortion of Thick Plates and Mitigation Techniques", PhD Thesis, Norwegian University of Science.
[13] Pang, H.L. and Pukas, S.R., (1989). "Residual stress measurements in a cruciform welded joint using hole drilling and strain gauges", Strain Journal, Vol. 25, pp. 7-14.
[14] Chandra, U., (1985). "Determination of residual stress due to girth butt welds in pipes", ASME Journal of Pressure Vessel Technology, Vol. 107, pp. 178–184.
[15] Ueda, Y. and Yamakawa, T., (1971). "Analysis of thermal elastic-plastic stress and strain during welding by finite element method", Transactions of Japan Welding Society, Vol. 2, pp. 90–100.
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[17] Anderson, B. and Karllson, L., (1981). "Thermal Stresses in Large Butt-Welded Plates", Thermal Stresses Journal, Vol. 4, pp. 491-500.
[18] Vakili-Tahami, F. and Daei-Sorkhabi, A.H. (2009)