2007, English, Thesis edition: Finite element simulation of stress evolution in thermal barrier coating systems / Piotr Bednarz. Bednarz, Piotr.

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Finite element simulation of stress evolution in thermal barrier coating systems / Piotr Bednarz
 
Bookmark: http://trove.nla.gov.au/version/46501640
Physical Description
  • xiv, 121 p. : ill. (some col.) ; 24 cm.
Published
  • Jülich : Forschungszentrum Jülich GmbH, Zentralbibliothek, c2007.
Language
  • English

Edition details

Title
  • Finite element simulation of stress evolution in thermal barrier coating systems /​ Piotr Bednarz.
Author
  • Bednarz, Piotr.
Other Authors
  • Forschungszentrum Jülich.
Published
  • Jülich : Forschungszentrum Jülich GmbH, Zentralbibliothek, c2007.
Physical Description
  • xiv, 121 p. : ill. (some col.) ; 24 cm.
Series
Subjects
Contents
  • Machine derived contents note: Nomenclature xi
  • 1 Introduction 1
  • 2 Literature overview 5
  • 2.1 Analytical study 5
  • 2.2 Numerical study 6
  • 3 Methods 11
  • 3.1 Introduction 11
  • 3.1.1 Strain 11
  • 3.1.2 Stress 13
  • 3.1.3 Strain decomposition 14
  • 3.2 Governing equations of solid body deformation. 18
  • 3.2.1 Total potential principle for linear mechanics. 19
  • 4 Modeling approach and materials data 23
  • 4.1 Geometry of specimen 23
  • 4.2 Mesh 24
  • 4.3 Material data 25
  • 4.4 Load and Boundary conditions 27
  • 4.4.1 Thermal Loads 27
  • 4.4.2 Displacement conditions 27
  • 5 Results 31
  • 5.1 Basic influence of material properties on stress response and stress evo-
  • lution 31
  • 5.1.1 Influence of TGO growth stresses (case A) 31
  • 5.1.2 Influence of BC plasticity on elastic TBCs including continuous
  • oxidation (case D) 40
  • 5.1.3 Influence of TGO plasticity on elastic TBCs including continu-
  • ous oxidation (case E) 42
  • 5.1.4 Influence of BC and TGO plasticity (case F) 42
  • 5.1.5 Influence of BC creep 45
  • 5.1.6 Influence of TBC creep 49
  • 5.1.7 Stress development during the first two cycles 53
  • 5.2 Variation of Material properties and interface shape 58
  • 5.2.1 Influence of Thermal expansion coefficient 58
  • 5.2.2 Influence of the Elastic modulus on the stress response 69
  • 5.2.3 Variation of BC creep rates 72
  • 5.2.4 Influence of TBC creep rates 74
  • 5.2.5 Influence of TGO creep 79
  • 5.2.6 Influence of base material creep 82
  • 5.2.7 Influence of lateral TGO growth 82
  • 5.2.8 Influence of roughness amplitude and wavelength 85
  • 5.2.9 Influence of different shapes of the interface 92
  • 5.2.10 Long term stress development 96
  • 5.3 Damage simulations at the peak of the TGO/​BC interface 98
  • 6 Discussion and Conclusions 101
  • Appendix A 111.
Notes
  • At head of title: Forschungszentrum Jülich GmbH, Institut für Energieforschung (IEF), Werkstoffstruktur und Eigenschaften (IEF-2).
  • Originally presented as the author's thesis (doctoral)--Aachen, RWTH, 2006.
  • Includes bibliographical references.
Language
  • English
ISBN
  • 9783893364718
  • 3893364714
Dewey Number
  • 620.1950151825
Libraries Australia ID
Contributed by
Libraries Australia

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