E-Book, Englisch, Band 33, 148 Seiten
Nieslony / Macha Spectral Method in Multiaxial Random Fatigue
1. Auflage 2007
ISBN: 978-3-540-73823-7
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark
E-Book, Englisch, Band 33, 148 Seiten
Reihe: Lecture Notes in Applied and Computational Mechanics
ISBN: 978-3-540-73823-7
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark
This monograph examines the theoretical foundations of the spectral method for fatigue life determination. The authors discuss a rule of description of random loading states with the matrix of power spectral density functions of the stress/strain tensor components. Some chosen criteria of multiaxial fatigue failure are analyzed. The formula proposed in this book enables readers to determine power spectral density of the equivalent history directly from the components of the power spectral density matrix of the multidimensional stochastic process.
Autoren/Hrsg.
Weitere Infos & Material
1;Preface;6
2;Contents;8
3;List of Symbols;10
4;Introduction;12
5;Spectral Methods for Fatigue Description;15
5.1;2.1 Random Gaussian Loading;15
5.2;2.2 Random Non-Gaussian Loads;36
5.3;2.3 Multiaxial Loading;39
6;Theoretical Fundamentals;45
6.1;3.1 Description of Random Stress and Strain States;45
6.2;3.2 Multiaxial Fatigue Failure Criteria;48
6.3;3.3 Power Spectral Density Function of Equivalent History;52
6.4;3.4 Amplitude Distribution in Spectral Methods;55
6.5;3.5 Spectral Method of Fatigue Life Determination;58
7;Algorithm of Spectral Method for Evaluation of Fatigue Life;75
7.1;4.1 Block 1 – Loading;75
7.2;4.2 Block 2 – Determination of Critical Plane Position;76
7.3;4.3 Block 3 – Calculation of Power Spectral Density Function of Equivalent Stress or Strain;78
7.4;4.4 Block 4 – Statistical Parameters;78
7.5;4.5 Block 5 – Calculation of Fatigue Life;78
8;Simulations;80
8.1;5.1 Algorithm, Assumptions and Objectives of Simulations;80
8.2;5.2 Input Quantities;82
8.3;5.3 Analysis of Positions of Critical Planes;90
8.4;5.4 Analysis of Equivalent Quantities;109
8.5;5.5 Analysis of Fatigue Life;111
9;Experimental Studies;120
9.1;6.1 Test Stands;120
9.2;6.2 Material and Geometry of Tested Specimens;124
9.3;6.3 Testing under Narrow-Band Frequency Loading;125
9.4;6.4 Testing under Broad-Band Frequency Loading;126
9.5;6.5 Comparison of Calculated and Experimental Fatigue;127
9.6;Life;127
10;Conclusions;141
11;References;143
12;Index;151
