Overview
- Nominated as an outstanding PhD thesis by University of Oviedo, Spain
- Is the first book to address the modeling of size effects in metal plasticity
- Proposes a general framework for crack tip assessment accounting for the role of geometrically necessary dislocations (GNDs) in fracture and damage
- Includes supplementary material: sn.pub/extras
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (9 chapters)
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Front Matter
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Numerical Framework
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Front Matter
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Back Matter
Keywords
- Strain Gradient Plasticity
- Crack Tip Mechanics
- Hydrogen Embrittlement
- Geometrically Necessary Dislocations (GNDs)
- Finite Element Analysis
- Gradient Plasticity
- Multi-scale Material Modeling
- Taylor Dislocation Model
- Material Length Scale
- Finite Deformation Theory
- Cohesive Zone Model
- Energetic And Dissipative Length Scales
- Extended Finite Element Method
- Hydrogen Assisted Cracking
- Stress-assisted Hydrogen Diffusion
- Continuum Modeling
- Corrosion
- Material Failure Mechanisms
- Computational Micromechanics
About this book
This book provides a comprehensive introduction to numerical modeling of size effects in metal plasticity. The main classes of strain gradient plasticity formulations are described and efficiently implemented in the context of the finite element method. A robust numerical framework is presented and employed to investigate the role of strain gradients on structural integrity assessment. The results obtained reveal the need of incorporating the influence on geometrically necessary dislocations in the modeling of various damage mechanisms. Large gradients of plastic strain increase dislocation density, promoting strain hardening and elevating crack tip stresses. This stress elevation is quantified under both infinitesimal and finite deformation theories, rationalizing the experimental observation of cleavage fracture in the presence of significant plastic flow. Gradient-enhanced modeling of crack growth resistance, hydrogen diffusion and environmentally assisted cracking highlighted the relevance of an appropriate characterization of the mechanical response at the small scales involved in crack tip deformation. Particularly promising predictions are attained in the field of hydrogen embrittlement. The research has been conducted at the Universities of Cambridge, Oviedo, Luxembourg, and the Technical University of Denmark, in a collaborative effort to understand, model and optimize the mechanical response of engineering materials.
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Authors and Affiliations
Bibliographic Information
Book Title: Strain Gradient Plasticity-Based Modeling of Damage and Fracture
Authors: Emilio Martínez Pañeda
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-3-319-63384-8
Publisher: Springer Cham
eBook Packages: Engineering, Engineering (R0)
Copyright Information: Springer International Publishing AG 2018
Hardcover ISBN: 978-3-319-63383-1Published: 05 September 2017
Softcover ISBN: 978-3-319-87541-5Published: 11 August 2018
eBook ISBN: 978-3-319-63384-8Published: 23 August 2017
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XVII, 159
Number of Illustrations: 19 b/w illustrations, 47 illustrations in colour
Topics: Solid Mechanics, Metallic Materials, Numerical and Computational Physics, Simulation