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2018 | OriginalPaper | Chapter

8. Damage and Fracture

Author : Wolfgang Brocks

Published in: Plasticity and Fracture

Publisher: Springer International Publishing

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Abstract

Micromechanical aspects, mechanisms and models of fracture are addressed, which have become increasingly topical since the 1990s though the basic ideas and perceptions date back to the early years of fracture mechanics. The characteristics of brittle and ductile damage on the micro-scale and the respective fractographic appearance are outlined and the implications on local criteria of fracture are specified. Two approaches for establishing constitutive equations of damage are distinguished, namely micro-mechanical models which aim at describing the physical processes of damage on the micro-scale following the concept of representative volume elements and phenomenological constitutive equations for stresses and strains describing macroscopically observable effects of degradation based on thermodynamical principles. Two particular models of major significance, the Gurson and the Rousselier yield function are described. A brief introduction to parameter identification ends the chapter.

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previous chapter Determination of Fracture Parameters
next chapter The Cohesive Model
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Metadata
Title
Damage and Fracture
Author
Wolfgang Brocks
Copyright Year
2018
Book
Plasticity and Fracture

Print ISBN: 978-3-319-62751-9

Electronic ISBN: 978-3-319-62752-6

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-62752-6_8

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