eprintid: 2819
rev_number: 9
eprint_status: archive
userid: 354
dir: disk0/00/00/28/19
datestamp: 2017-12-20 04:24:20
lastmod: 2017-12-20 04:24:20
status_changed: 2017-12-20 04:24:20
type: article
metadata_visibility: show
creators_name: Doan, Hong Duc
creators_name: Bui, Quoc Tinh
creators_name: Do, Van Thom
creators_name: Nguyen, Dinh Duc
creators_id: ducnd@vnu.edu.vn
title: A rate-dependent hybrid phase field model for dynamic crack propagation
ispublished: pub
subjects: Mechanics
subjects: isi
divisions: fac_fema
abstract: Several models of variational phase field for fracture have been introduced and analyzed to different degrees of applications, and the rate-independent phase field approach has been shown to be a versatile one, but it is not able to accurately capture crack velocity and dissipated energy in dynamic crack propagation. In this paper, we introduce a novel rate-dependent regularized phase field approach to study dynamic fracture behaviors of polymethylmethacrylate materials, in which the rate coefficient is estimated through energy balance, i.e., dynamics release energy, cohesive energy and dissipated energy. The mode-I dynamics crack problem is considered, and its accuracy is validated with respect to experimental data [F. Zhou, Ph.D. dissertation (The University of Tokyo, Japan, 1996)] and other numerical methods, taking the same configuration, material property, crack location, and other relevant assumptions. The results shed light on the requirement and need for taking the rate-dependent coefficient in dynamic fracture analysis.
date: 2017
date_type: published
publisher: American Institute of Physics
full_text_status: none
publication: Journal of Applied Physics
refereed: TRUE
issn: 0021-8979
related_url_url: https://doi.org/10.1063/1.4990073
citation:   Doan, Hong Duc and Bui, Quoc Tinh and Do, Van Thom and Nguyen, Dinh Duc  (2017) A rate-dependent hybrid phase field model for dynamic crack propagation.  Journal of Applied Physics .    ISSN 0021-8979