Title:	Wave dispersion analysis and evaluation of dynamic stress intensity factors using peridynamics approach
Authors:	Bouaraquia, O. Rafiq, Y. Mabssout, Mokhtar
Citation:	Applied and Computational Mechanics. 2024, vol. 18, no. 1, p. 5-24.
Issue Date:	2024
Publisher:	University of West Bohemia
Document type:	článek article
URI:	http://hdl.handle.net/11025/55652
ISSN:	1802-680X (Print) 2336-1182 (Online)
Keywords:	peridynamika založená na vazbě;vlnová disperze;lomová mechanika;faktory dynamické intenzity stresu;extrapolace posunutí
Keywords in different language:	bond-based peridynamics;wave dispersion;fracture mechanics;dynamic stress intensity factors;displacement extrapolation
Abstract in different language:	The objective of this paper is to evaluate the dynamic stress intensity factors (DSIFs) of a cracked body using the bond-based peridynamics (BBPD) formulation. The peridynamics theory offers advantages over the classical continuum theory for solving partial differential equations in fracture mechanics. Nevertheless, some problems remain, such as its dispersion characteristics and constant micromodulus used in the classical BBPD. In this study, a Gaussian function is used to define the non-constant micromodulus. A wave dispersion analysis for a 1D problem was carried out and the influence of the horizon, mesh size and the kernel function on the dispersion properties were analyzed. On the other hand, a new approach to evaluate the DSIFs of a cracked body using the BBPD coupled with the displacement extrapolation technique is presented. Parameters that reduced the wave dispersion were kept for the DSIFs estimation. The proposed method is applied to analyze some benchmark examples. The obtained results are compared with the exact ones and they showed that the proposed approach can be used as an alternative method to evaluate DSIFs.
Rights:	University of West Bohemia. All rights reserved.
Appears in Collections:	Volume 18, number 1 (2024) Volume 18, number 1 (2024)

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