Dual-horizon peridynamics

authored by: Huilong Ren, Xiaoying Zhuang, Yongchang Cai, Timon Rabczuk
Abstract: In this paper, we develop a dual-horizon peridynamics (DH-PD) formulation that naturally includes varying horizon sizes and completely solves the ‘ghost force’ issue. Therefore, the concept of dual horizon is introduced to consider the unbalanced interactions between the particles with different horizon sizes. The present formulation fulfills both the balances of linear momentum and angular momentum exactly. Neither the ‘partial stress tensor’ nor the ‘slice’ technique is needed to ameliorate the ghost force issue. We will show that the traditional peridynamics can be derived as a special case of the present DH-PD. All three peridynamic formulations, namely, bond-based, ordinary state-based, and non-ordinary state-based peridynamics, can be implemented within the DH-PD framework. Our DH-PD formulation allows for h-adaptivity and can be implemented in any existing peridynamics code with minimal changes. A simple adaptive refinement procedure is proposed, reducing the computational cost. Both two-dimensional and three-dimensional examples including the Kalthoff–Winkler experiment and plate with branching cracks are tested to demonstrate the capability of the method.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Bauhaus-Universität Weimar
Tongji University
Ton Duc Thang University
Type: Article
Journal: International Journal for Numerical Methods in Engineering
Volume: 108
Pages: 1451-1476
No. of pages: 26
ISSN: 0029-5981
Publication date: 09.04.2016
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Numerical Analysis, General Engineering, Applied Mathematics
Electronic version(s): https://doi.org/10.1002/nme.5257 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{a247c9ed9a8645549b6007a947a482f0,
title = "Dual-horizon peridynamics",
abstract = "In this paper, we develop a dual-horizon peridynamics (DH-PD) formulation that naturally includes varying horizon sizes and completely solves the {\textquoteleft}ghost force{\textquoteright} issue. Therefore, the concept of dual horizon is introduced to consider the unbalanced interactions between the particles with different horizon sizes. The present formulation fulfills both the balances of linear momentum and angular momentum exactly. Neither the {\textquoteleft}partial stress tensor{\textquoteright} nor the {\textquoteleft}slice{\textquoteright} technique is needed to ameliorate the ghost force issue. We will show that the traditional peridynamics can be derived as a special case of the present DH-PD. All three peridynamic formulations, namely, bond-based, ordinary state-based, and non-ordinary state-based peridynamics, can be implemented within the DH-PD framework. Our DH-PD formulation allows for h-adaptivity and can be implemented in any existing peridynamics code with minimal changes. A simple adaptive refinement procedure is proposed, reducing the computational cost. Both two-dimensional and three-dimensional examples including the Kalthoff–Winkler experiment and plate with branching cracks are tested to demonstrate the capability of the method.",
keywords = "adaptive refinement, dual horizon, ghost force, horizon variable, peridynamics, spurious wave reflection",
author = "Huilong Ren and Xiaoying Zhuang and Yongchang Cai and Timon Rabczuk",
year = "2016",
month = apr,
day = "9",
doi = "10.1002/nme.5257",
language = "English",
volume = "108",
pages = "1451--1476",
journal = "International Journal for Numerical Methods in Engineering",
issn = "0029-5981",
publisher = "John Wiley and Sons Ltd",
number = "12",
}