Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers
Modeling and simulating brittle and quasi-brittle fracture mechanisms is important to characterizing the failure behavior of laminated composite materials and understanding iceberg calving from Antarctic glaciers and ice shelves. In laminated fiber-reinforced composites, delamination is one of the m...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | http://hdl.handle.net/1803/16639 |
id |
ftvanderbilt:oai:ir.vanderbilt.edu:1803/16639 |
---|---|
record_format |
openpolar |
spelling |
ftvanderbilt:oai:ir.vanderbilt.edu:1803/16639 2024-06-02T07:58:09+00:00 Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers Ghosh, Gourab Duddu, Ravindra 2021-03-23 application/pdf http://hdl.handle.net/1803/16639 en eng Cohesive Zone Model Composite Delamination Hydrofracturing of Glacier Thesis 2021 ftvanderbilt 2024-05-06T11:26:14Z Modeling and simulating brittle and quasi-brittle fracture mechanisms is important to characterizing the failure behavior of laminated composite materials and understanding iceberg calving from Antarctic glaciers and ice shelves. In laminated fiber-reinforced composites, delamination is one of the most dominant failure mechanisms, which involves progressive damage accumulation along interlaminar interfaces. Hydrofracturing can destabilize Antarctic glaciers and ice shelves and promote iceberg calving, which is one of the most enigmatic glaciological processes and can contribute to rapid global sea-level rise in the coming centuries. This dissertation presents novel and robust damage-based cohesive zone modeling approaches to simulate mixed-mode delamination in laminated composites, and hydrofracturing in glaciers and ice shelves. The two main contributions are a Nitsche-inspired stabilized finite element method for cohesive fracture and a poro-damage cohesive zone model for hydrofracture. Simulation studies, including verification and sensitivity studies, are conducted to establish the accuracy and efficacy of the finite element implementations for modeling composite delamination and crevasse propagation in glaciers. Thesis Antarc* Antarctic Ice Shelves Iceberg* Vanderbilt University, Nashville: DiscoverArchive Antarctic |
institution |
Open Polar |
collection |
Vanderbilt University, Nashville: DiscoverArchive |
op_collection_id |
ftvanderbilt |
language |
English |
topic |
Cohesive Zone Model Composite Delamination Hydrofracturing of Glacier |
spellingShingle |
Cohesive Zone Model Composite Delamination Hydrofracturing of Glacier Ghosh, Gourab Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
topic_facet |
Cohesive Zone Model Composite Delamination Hydrofracturing of Glacier |
description |
Modeling and simulating brittle and quasi-brittle fracture mechanisms is important to characterizing the failure behavior of laminated composite materials and understanding iceberg calving from Antarctic glaciers and ice shelves. In laminated fiber-reinforced composites, delamination is one of the most dominant failure mechanisms, which involves progressive damage accumulation along interlaminar interfaces. Hydrofracturing can destabilize Antarctic glaciers and ice shelves and promote iceberg calving, which is one of the most enigmatic glaciological processes and can contribute to rapid global sea-level rise in the coming centuries. This dissertation presents novel and robust damage-based cohesive zone modeling approaches to simulate mixed-mode delamination in laminated composites, and hydrofracturing in glaciers and ice shelves. The two main contributions are a Nitsche-inspired stabilized finite element method for cohesive fracture and a poro-damage cohesive zone model for hydrofracture. Simulation studies, including verification and sensitivity studies, are conducted to establish the accuracy and efficacy of the finite element implementations for modeling composite delamination and crevasse propagation in glaciers. |
author2 |
Duddu, Ravindra |
format |
Thesis |
author |
Ghosh, Gourab |
author_facet |
Ghosh, Gourab |
author_sort |
Ghosh, Gourab |
title |
Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
title_short |
Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
title_full |
Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
title_fullStr |
Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
title_full_unstemmed |
Robust Finite Element Implementation of Damage-based Cohesive Zone Models: Application to Composite Delamination and Hydrofracturing of Glaciers |
title_sort |
robust finite element implementation of damage-based cohesive zone models: application to composite delamination and hydrofracturing of glaciers |
publishDate |
2021 |
url |
http://hdl.handle.net/1803/16639 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Ice Shelves Iceberg* |
_version_ |
1800741428218822656 |