| Autor: |
Yusoff, Norwahida, Yusof, Feizal |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2017, Vol. 1865 Issue 1, p1-6, 6p, 1 Diagram, 1 Chart, 3 Graphs |
| Abstrakt: |
A detailed of finite element analysis of an elastic perfectly-plastic thin boundary layer formulations has been used to determine the crack-tip constraint in a through-thickness crack subjected to mode I loading under small scale yielding conditions. The variations of the degree of plane strain, Tz with respect to the radial distance ahead of the crack, r, the angles around the crack, θ, and the out-of-plane direction, x3 are examined and compared to an existing analytical solution based on a deformation plasticity for the given crack problem. The results show that Tz is strongly dependent on angles with significant variation observed on the planes near the free-surface, which is in contrast to the current understanding of Tz that is claimed to be independent of angles. Apparent deviations have been observed between the current results and the analytical analyse of Tz for non-hardening material in a contained yielding condition particularly in the region close to the crack tip within the quarter-plane and the free-surface. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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