OSCILLATORY INSTABILITY OF CRACK PROPAGATIONS IN QUASI-STATIC FRACTURE

Authors
SASA S SEKIMOTO K NAKANISHI H
Citation
S. Sasa et al., OSCILLATORY INSTABILITY OF CRACK PROPAGATIONS IN QUASI-STATIC FRACTURE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(3), 1994, pp. 180001733-180001736
Citations number
18
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
3
Year of publication
1994
Pages
180001733 - 180001736
Database
ISI
SICI code
1063-651X(1994)50:3<180001733:OIOCPI>2.0.ZU;2-T
Abstract
Quasistatic crack propagations in a thin plate are studied theoretical ly. The Griffith theory is applied to determine a crack extension cond ition and the motion of crack tips in straight propagation. A linear s tability problem for the straight propagation is formulated, based on the assumption that the crack tip moves in such a way that a singular shear stress is made to vanish. it is shown that straight propagations become unstable under certain conditions and that an oscillatory prop agation appears. The critical conditions are calculated quantitatively , and the results are compared with the corresponding experiments.