Determination of horizon size in state-based peridynamics

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Abstract

Peridynamics is based on integro-differential equations and has a length scale parameter called horizon which gives peridynamics a non-local character. Currently, there are three main peridynamic formulations available in the literature including bond-based peridynamics, ordinary state-based peridynamics and non-ordinary state-based peridynamics. In this study, the optimum horizon size is determined for ordinary state-based peridynamics and non-ordinary state-based peridynamics formulations by using uniform and non-uniform discretisation under dynamic and static conditions. It is shown that the horizon sizes selected as optimum sizes for uniform discretisation can also be used for non-uniform discretisation without introducing significant error to the system. Moreover, a smaller horizon size can be selected for non-ordinary state-based formulation which can yield significant computational advantage. It is also shown that same horizon size can be used for both static and dynamic problems.
Original languageEnglish
Pages (from-to)705-728
Number of pages24
JournalContinuum Mechanics and Thermodynamics
Volume35
Issue number3
Early online date16 Jun 2020
DOIs
Publication statusPublished - 31 May 2023

Keywords

  • peridynamics
  • horizon
  • ordinary state based peridynamics

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