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Record #173381:

Size effect law and fracture mechanics of the triggering of dry snow slab avalanches / Zdeněk P. Bažant, Goangseup Zi.

Title: Size effect law and fracture mechanics of the triggering of dry snow slab avalanches / Zdeněk P. Bažant, Goangseup Zi.
Author(s): Bažant, Zdeněk P.
Zi, Goangseup.
Date: 2003.
In: Journal of Geophysical Research. (2003.), Vol. 108(B2) (2003)
Abstract: Formulates size effect law for fracture triggering in dry snow slabs of high enough length-to-thickness ratio, based on simplified one-dimensional analysis by equivalent linear elastic fracture mechanics. Uses fracture data for various slab thicknesses to identify material parameters. Verifies using 2-d finite element mode II cohesive crack model. Discusses crack length at failure, dependence of snow properties on slab thickness, and effect of pre-existing weak zone at snow base. Size effect disappears below critical snow depth. Discusses practical applications for avalanches and ramifications for models of mud, clay or rock slides. Suggests mode II fracture toughness approximately proportional to 1.8 power of snow thickness.
Notes:

Journal of Geophysical Research. Vol. 108(B2) :2119, EPM 13.1-13.11 (2003).

Keywords: 551.32 -- Glaciology.
551.578.48 -- Avalanches.
551.578.46 -- Snow cover and snow patches.
551.435.627 -- Landslides.
551.322 -- Ice and snow.
539.42 -- Ice, tensile strength.
551.578.482 -- Avalanches. Theory, causes.
519.673 -- Modelling.
E10 -- Glaciology: snow and avalanches.
SPRI record no.: 173381

MARCXML

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100 1# ‡aBažant, Zdeněk P.
245 10 ‡aSize effect law and fracture mechanics of the triggering of dry snow slab avalanches /‡cZdeněk P. Bažant, Goangseup Zi.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2003.
300 ## ‡ap. 2119, EPM 13.1-13.11 :‡bdiags.
500 ## ‡aJournal of Geophysical Research. Vol. 108(B2) :2119, EPM 13.1-13.11 (2003).
520 3# ‡aFormulates size effect law for fracture triggering in dry snow slabs of high enough length-to-thickness ratio, based on simplified one-dimensional analysis by equivalent linear elastic fracture mechanics. Uses fracture data for various slab thicknesses to identify material parameters. Verifies using 2-d finite element mode II cohesive crack model. Discusses crack length at failure, dependence of snow properties on slab thickness, and effect of pre-existing weak zone at snow base. Size effect disappears below critical snow depth. Discusses practical applications for avalanches and ramifications for models of mud, clay or rock slides. Suggests mode II fracture toughness approximately proportional to 1.8 power of snow thickness.
530 ## ‡aAlso issued online ‡uurn:doi:10.1029/2002JB001884‡uhttps://dx.doi.org/10.1029/2002JB001884
650 07 ‡a551.32 -- Glaciology.‡2udc
650 07 ‡a551.578.48 -- Avalanches.‡2udc
650 07 ‡a551.578.46 -- Snow cover and snow patches.‡2udc
650 07 ‡a551.435.627 -- Landslides.‡2udc
650 07 ‡a551.322 -- Ice and snow.‡2udc
650 07 ‡a539.42 -- Ice, tensile strength.‡2udc
650 07 ‡a551.578.482 -- Avalanches. Theory, causes.‡2udc
650 07 ‡a519.673 -- Modelling.‡2udc
650 07 ‡aE10 -- Glaciology: snow and avalanches.‡2local
700 1# ‡aZi, Goangseup.
773 0# ‡7nnas ‡tJournal of Geophysical Research. ‡gVol. 108(B2) (2003) ‡wSPRI-35252
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917 ## ‡aUnenhanced record from Muscat, imported 2019
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