Multi-parameter failure assessment of a bi-material V-notch - Crack initiation from a free-edge singularity

0510060 - ÚFM 2020 RIV NL eng J - Journal Article
Krepl, Ondřej - Klusák, Jan
Multi-parameter failure assessment of a bi-material V-notch - Crack initiation from a free-edge singularity.
Theoretical and Applied Fracture Mechanics. Roč. 100, APR (2019), s. 233-241. ISSN 0167-8442. E-ISSN 1872-7638
R&D Projects: GA MŠMT(CZ) LQ1601; GA ČR GA17-01589S
Institutional support: RVO:68081723
Keywords : Singular stress concentration * Failure criterion * Crack initiation * Non-singular stress terms * Multi-parameter fracture mechanics
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impact factor: 3.021, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0167844218305846?via%3Dihub

Multi-parameter fracture mechanics criteria are used to describe crack initiation conditions in general singular stress concentrators. In the cases of stress concentrators described by only one singular stress term, multi-parameter description provides a qualitative and quantitative increase of precision. In the paper multi-parameter criteria based on an average tangential stress and average strain energy density factor are described and used to determine a crack initiation direction and a critical load in the case of a free-edge singularity. The critical load expresses a stability criterion of the studied general singular stress concentrator. Contrary to criteria employing singular stress terms only, the criterion of this kind is able to cover the influence of the direction of an external load.
Permanent Link: http://hdl.handle.net/11104/0300627