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KLUSÁK, J. KNÉSL, Z. PROFANT, T.
Original Title
The influence of discontinuity of fracture-mechanics parameters on the failure manner of multi-material structures
Type
conference paper
Language
English
Original Abstract
Within failure assessment of singular stress concentrators, the crack initiation and propagation direction is often gained from the criterion of the maximum tangential stress. But there are cases where the crack is initiated in a different direction than the direction corresponding to the global maximum of tangential stress. A case of this kind can occur during constrained crack initiation caused by discontinuity of fracture-mechanics parameters, namely the fracture toughness KIC or the threshold value KIth. An example can be the crack initiation in a multi-material wedge, where the extreme value of tangential stress occurs in one of the materials, but the crack initiates in another material part. The maximum value of tangential stress is often oriented to the material with the highest elastic module. But due to different fracture-mechanics properties (KIC or KIth) of particular materials, the crack can initiate into a material with worse fracture-mechanics properties or into the bi-material interface
Keywords
bi-material notch, psi-integral, multimaterial structures
Authors
KLUSÁK, J.; KNÉSL, Z.; PROFANT, T.
RIV year
2011
Released
2. 3. 2011
Publisher
cimne
Location
Barcelona, Španělsko
ISBN
978-84-87867-66-8
Book
Proceedings of Computational Modeling of Fracture and Failure of Materials and Structures
Edition
1
Edition number
Pages from
Pages to
4
Pages count
BibTex
@inproceedings{BUT90674, author="Jan {Klusák} and Zdeněk {Knésl} and Tomáš {Profant}", title="The influence of discontinuity of fracture-mechanics parameters on the failure manner of multi-material structures", booktitle="Proceedings of Computational Modeling of Fracture and Failure of Materials and Structures", year="2011", series="1", number="1", pages="1--4", publisher="cimne", address="Barcelona, Španělsko", isbn="978-84-87867-66-8" }