Bond-associated deformation gradients for peridynamic correspondence model
Abstract
Non-ordinary state-based peridynamic correspondence material model is known to have issues with material instability, i.e. the existence of zero-energy modes, due to non-unique mapping between deformation states and force states via the conventional peridynamic deformation gradient. In this paper, an alternative approach in which the deformation gradient hence force state are computed specifically for each individual bond is proposed to eliminate the material instability. Bond-associated deformation gradient is calculated based on deformation states of material points within an individual bond’s proximity, termed here as the bond-associated family, rather than a material point’s whole family. This bond-associated deformation gradient can better represent the force state of each individual bond from the deformation states of material points in its proximity, and hence inherently resolves issues of material instability in the conventional correspondence material model. Parametric study on bond-associated horizon size indicates that the optimal size should be no less than the material point’s horizon size but smaller than two times of that value. Comparisons against reference solutions using finite element method establish the validity and accuracy of the proposed formulation.
- Authors:
-
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Publication Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1631716
- Alternate Identifier(s):
- OSTI ID: 1548501
- Report Number(s):
- INL/JOU-18-45154-Rev000
Journal ID: ISSN 0093-6413; TRN: US2201018
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Mechanics Research Communications
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: C; Journal ID: ISSN 0093-6413
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; Peridynamics; Correspondence model; Stability; Zero-energy modes; Deformation gradient
Citation Formats
Chen, Hailong. Bond-associated deformation gradients for peridynamic correspondence model. United States: N. p., 2018.
Web. doi:10.1016/j.mechrescom.2018.04.004.
Chen, Hailong. Bond-associated deformation gradients for peridynamic correspondence model. United States. https://doi.org/10.1016/j.mechrescom.2018.04.004
Chen, Hailong. Mon .
"Bond-associated deformation gradients for peridynamic correspondence model". United States. https://doi.org/10.1016/j.mechrescom.2018.04.004. https://www.osti.gov/servlets/purl/1631716.
@article{osti_1631716,
title = {Bond-associated deformation gradients for peridynamic correspondence model},
author = {Chen, Hailong},
abstractNote = {Non-ordinary state-based peridynamic correspondence material model is known to have issues with material instability, i.e. the existence of zero-energy modes, due to non-unique mapping between deformation states and force states via the conventional peridynamic deformation gradient. In this paper, an alternative approach in which the deformation gradient hence force state are computed specifically for each individual bond is proposed to eliminate the material instability. Bond-associated deformation gradient is calculated based on deformation states of material points within an individual bond’s proximity, termed here as the bond-associated family, rather than a material point’s whole family. This bond-associated deformation gradient can better represent the force state of each individual bond from the deformation states of material points in its proximity, and hence inherently resolves issues of material instability in the conventional correspondence material model. Parametric study on bond-associated horizon size indicates that the optimal size should be no less than the material point’s horizon size but smaller than two times of that value. Comparisons against reference solutions using finite element method establish the validity and accuracy of the proposed formulation.},
doi = {10.1016/j.mechrescom.2018.04.004},
journal = {Mechanics Research Communications},
number = C,
volume = 90,
place = {United States},
year = {Mon Apr 16 00:00:00 EDT 2018},
month = {Mon Apr 16 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
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