design and analysis of fatigue resistant welded structures

[david-smith]

design and analysis of fatigue resistant welded structures

Author: DIETER RADAJ, Dr-Ing habil | Size: 48 MB | Format: PDF | Quality: Scanner | Publisher: ABINGTON PUBLISHING , Woodhead Publishing LId | Year: 1990 | pages: 357 | ISBN: 1855730049, 9781855730045

Contents
1 Introduction
1.1 The phenomenon of fatigue
1.2 Basic tests
1.3 Terms and definitions
1.4 Fatigue strength of unwelded material
1.5 Methodological aspects and stress assessments
1.6 Nominal stress assessment for fatigue resistant joints
1.7 General references to relevant literature
2 Fatigue strength for infinite life of welded joints in
structural steel 36
2.1 Simply loaded joints 36
2.2 Multiply loaded joints 59
2.3 Influence of mean stress
3 Fatigue strength for finite life and service fatigue strength
of welded joints 66
3.1 Fatigue strength dependent on number of cycles 66
3.2 Load spectra 74
3.3 Fatigue strength with load spectra 82
3.4 Manufacturing measures for increasing fatigue strength
4 Fatigue strength of welded joints in high tensile steels and
aluminium alloys 98
4.1 Welded joints in high tensile steels 98
4.2 Welded joints in aluminium alloys
5 Fatigue strength of welded components, design 10 Structural stress, notch stress and stress intensity
improvements 105 approach for assessment of fatigue strength ofspot welded
5.1 General aspects and welded components in structural joints 299
steel engineering (bar structures) 105 10.1 Development status of local approaches 299
5.2 Welded components in shipbuilding (bar to plate 10.2 Basic loading modes at weld spot 300
structures) 127 10.3 Elementary mechanics of tensile shear and cross
5.3 Welded components in tank, boiler and pipeline tension loading 302
construction (circular shell and plate structures) 136 10.4 Structural stresses at weld spot 305
5.4 Appropriate design with regard to fatigue strength 150 10.5 Notch stresses at weld spot 308
10.6 Stress intensity factors at weld spot 311
6 Fatigue strength of spot, friction, flash butt and stud 10.7 Local stress parameters for common weld spot
welded joints 153 specimens 314
6.1 Spot welded joints 153 10.8 Assessment of load carrying capacity of weld spots in
6.2 Weldbonded joints 160 structural components 322
6.3 Friction welded and flash butt welded joints 161
10.9 Effect of residual stresses and hardness distribution 324
6.4 Stud welded joints 161
10.10 Large deflections and buckling 327
7 Design codes, assessment of nominal and structural stress 163 10.11 Crack initiation with local yielding and crack
7.1 Codes based on science, empirical knowledge and propagation 331
tradition 163 10.12 Local fatigue strength of weld spot 333
7.2 Dimensioning for fatigue in accordance with the 10.13 Combination of spot welding and bonding 341
7.3 Scoudrveesy, aosfsethsesmdeesnitgonfcnoodmesinal stress 116664 @ Corrosion and wear resistance of welded joints 343
7.4 Design loads, load spectra, loading classes 168 11.1 General aspects 343
7.5 Notch classes and quality of manufacture 172 11.2 Corrosion resistance 343
7.6 Permissible stress, safety factor, multiaxiality hypothesis 189 11.3 Wear resistance 347
7.7 Assessment of structural stress 200
12 Example for the development of a fatigue resistant welded
8 Notch stress approach for assessment orratigue strength of structure 349
seam welded joints 208 12.1 Introduction, general outline, requirements 349
8.1 General fundamentals of the method 208 12.2 Development procedure, numerical and experimental
8.2 Elastic notch effect of welded joints with regard to simulation 350
fatigue strength for infinite life 214
8.3 Elastic-plastic notch effect of welded joints with Bibliography 356
regard to fatigue strength for finite life and service
fatigue strength 262
Index 375
9 Fracture mechanics approach for assessment offatigue
strength ofseam welded joints 277
9.1 Principles of the approach 277
9.2 Crack propagation equations 279
9.3 Input parameters of the fracture mechanical strength
or life evaluation for welded joints 287
9.4 Application for assessment of fatigue strength for
finite and infinite life 293
9.5 Application for assessment of safety, residual life,
fitness-far-purpose and backtracing of failures 295

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[febo927]

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[axcel]

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