Crack dynamics and crack surfaces in elastic beam lattices

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
1998
Major/Subject
Mcode
Degree programme
Language
en
Pages
R1259-R1262
Series
Physical Review E, Volume 57, Issue 2
Abstract
The dynamics of propagating cracks is analyzed in elastic two-dimensional lattices of beams. At early times, inertia effects and static stress enhancement combine so that the crack-tip velocity is found to behave as t1/7. At late times a minimal crack-tip model reproduces the numerical simulation results. With no disorder and for fast loading, a “mirror-mist-mirror” crack-surface pattern emerges. Introduction of disorder leads, however, to the formation of the “mirror-mist-hackle”–type interface typical in many experimental situations.
Description
Keywords
propagating cracks, dynamics, elastic two-dimensional lattices of beams
Other note
Citation
Åström, Jan & Alava, Mikko J. & Timonen, Jussi. 1998. Crack dynamics and crack surfaces in elastic beam lattices. Physical Review E. Volume 57, Issue 2. R1259-R1262. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.57.r1259.