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Damage and microstructural changes in ice in compression during interaction with structures

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.4028/www.scientific.net/KEM.251-252.431
AuteurRechercher : ; Rechercher : ; Rechercher : Identifiant ORCID : https://orcid.org/0000-0002-0975-8884
FormatTexte, Article
Sujetice; damage; microcracking; recrystallization; pressure melting
Résumé
A layer of damaged ice has been observed near the contact zone of ice-structure interactions in small scale, medium scale and full scale tests. Microcracking and recrystallization were observed in the layer. It is believed that pressure melting also occurs in the layer. The objective of the present work is to investigate the process of formation of the layer. Triaxial confining tests were conducted at Memorial University of Newfoundland with constant stress. The tests showed a pressure dependent process of damage. Microcracking and recrystallization were observed to be the main type of damage at low confining pressure levels with possible melting at asperities in cracks. Recrystallization and melting were the main types of damage under high confinements. Damage was calibrated using a scalar parameter and the triaxial test data. Numerical simulations were conducted using finite element methods to simulate the interaction process. The results are consistent with the observations from the medium scale tests.
Date de publication
Maison d’éditionTrans Tech Publications
Dans
  • Key Engineering Materials 251-252 (octobre 2003) : 431–436.
Langueanglais
Publications évaluées par des pairsOui
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Identificateur de l’enregistrementba4ae90f-6304-4743-8ef4-76f8e82d769c
Enregistrement créé2019-05-13
Enregistrement modifié2021-03-26
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