Modeling weak snow layer fracture in propagation saw test using an ice column model
Fracture initiation and propagation in a weak snow layer are two primary processes of the slab avalanche formation process. This study proposes a model for the weak snow layer and investigates the fracture propagation process. The weak snow layer is conceptualized as columns of ice sandwiched betwee...
Published in: | Arctic, Antarctic, and Alpine Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Taylor & Francis Group
2022
|
Subjects: | |
Online Access: | https://doi.org/10.1080/15230430.2022.2123254 https://doaj.org/article/4a3161b075ae454d993162ac8c1645d9 |
id |
ftdoajarticles:oai:doaj.org/article:4a3161b075ae454d993162ac8c1645d9 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:4a3161b075ae454d993162ac8c1645d9 2023-05-15T14:14:35+02:00 Modeling weak snow layer fracture in propagation saw test using an ice column model Agraj Upadhyay Rajneesh Sharma Puneet Mahajan 2022-12-01T00:00:00Z https://doi.org/10.1080/15230430.2022.2123254 https://doaj.org/article/4a3161b075ae454d993162ac8c1645d9 EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2022.2123254 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2022.2123254 1938-4246 1523-0430 https://doaj.org/article/4a3161b075ae454d993162ac8c1645d9 Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 507-524 (2022) Propagation saw test weak snow layer model finite element analysis critical crack length fracture propagation speed Environmental sciences GE1-350 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1080/15230430.2022.2123254 2022-12-30T20:31:48Z Fracture initiation and propagation in a weak snow layer are two primary processes of the slab avalanche formation process. This study proposes a model for the weak snow layer and investigates the fracture propagation process. The weak snow layer is conceptualized as columns of ice sandwiched between two strong layers of snow. The strong layers are modeled as linear elastic, whereas the ice is characterized as a damaging elastoplastic material. The effective mechanical properties of the model weak layer are examined using finite element analysis and are close to the snow properties reported in the literature. This model is used in numerical propagation saw tests (PSTs) to investigate the fracture propagation process in the weak snow layer. Critical crack length (CCL) and fracture propagation speed (FPS) in PST simulations are obtained by tracking the crack tip and are in good agreement with the previously reported results. An insight into the fracture propagation process in the weak snow layer is presented through energy variation analysis in PST simulations and shown that the FPS during dynamic fracture propagation varies with the top slab’s elastic modulus, the weak layer’s fracture energy, and inertia of the overlying slab. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 54 1 507 524 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Propagation saw test weak snow layer model finite element analysis critical crack length fracture propagation speed Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Propagation saw test weak snow layer model finite element analysis critical crack length fracture propagation speed Environmental sciences GE1-350 Ecology QH540-549.5 Agraj Upadhyay Rajneesh Sharma Puneet Mahajan Modeling weak snow layer fracture in propagation saw test using an ice column model |
topic_facet |
Propagation saw test weak snow layer model finite element analysis critical crack length fracture propagation speed Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Fracture initiation and propagation in a weak snow layer are two primary processes of the slab avalanche formation process. This study proposes a model for the weak snow layer and investigates the fracture propagation process. The weak snow layer is conceptualized as columns of ice sandwiched between two strong layers of snow. The strong layers are modeled as linear elastic, whereas the ice is characterized as a damaging elastoplastic material. The effective mechanical properties of the model weak layer are examined using finite element analysis and are close to the snow properties reported in the literature. This model is used in numerical propagation saw tests (PSTs) to investigate the fracture propagation process in the weak snow layer. Critical crack length (CCL) and fracture propagation speed (FPS) in PST simulations are obtained by tracking the crack tip and are in good agreement with the previously reported results. An insight into the fracture propagation process in the weak snow layer is presented through energy variation analysis in PST simulations and shown that the FPS during dynamic fracture propagation varies with the top slab’s elastic modulus, the weak layer’s fracture energy, and inertia of the overlying slab. |
format |
Article in Journal/Newspaper |
author |
Agraj Upadhyay Rajneesh Sharma Puneet Mahajan |
author_facet |
Agraj Upadhyay Rajneesh Sharma Puneet Mahajan |
author_sort |
Agraj Upadhyay |
title |
Modeling weak snow layer fracture in propagation saw test using an ice column model |
title_short |
Modeling weak snow layer fracture in propagation saw test using an ice column model |
title_full |
Modeling weak snow layer fracture in propagation saw test using an ice column model |
title_fullStr |
Modeling weak snow layer fracture in propagation saw test using an ice column model |
title_full_unstemmed |
Modeling weak snow layer fracture in propagation saw test using an ice column model |
title_sort |
modeling weak snow layer fracture in propagation saw test using an ice column model |
publisher |
Taylor & Francis Group |
publishDate |
2022 |
url |
https://doi.org/10.1080/15230430.2022.2123254 https://doaj.org/article/4a3161b075ae454d993162ac8c1645d9 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 507-524 (2022) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2022.2123254 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2022.2123254 1938-4246 1523-0430 https://doaj.org/article/4a3161b075ae454d993162ac8c1645d9 |
op_doi |
https://doi.org/10.1080/15230430.2022.2123254 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
507 |
op_container_end_page |
524 |
_version_ |
1766286969751470080 |