Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijsolstr.2009.08.025
Title: Over-nonlocal gradient enhanced plastic-damage model for concrete
Authors: Hien Poh, L.
Swaddiwudhipong, S. 
Keywords: Concrete
Gradient models
Localization
Nonlocal continuum
Plastic-damage models
Issue Date: 15-Dec-2009
Source: Hien Poh, L.,Swaddiwudhipong, S. (2009-12-15). Over-nonlocal gradient enhanced plastic-damage model for concrete. International Journal of Solids and Structures 46 (25-26) : 4369-4378. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijsolstr.2009.08.025
Abstract: Classical continuum models exhibit strong mesh dependency during softening. One method to regularize the problem is to introduce a length scale parameter via the nonlocal formulation. However, standard nonlocal enhancement (either by integral or gradient formulation) may serve only as a partial localization limiter for many material models. The "over-nonlocal" formulation, where the weight for the nonlocal value is greater than unity and the excesses compensated by assigning a negative weight to the local value, is able to fully regularize certain material models when standard nonlocal enhancement fails to do so. A plastic-damage model for concrete is formulated with this over-nonlocal enhancement via the gradient approach and the full regularizing capabilities demonstrated. © 2009 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Solids and Structures
URI: http://scholarbank.nus.edu.sg/handle/10635/65958
ISSN: 00207683
DOI: 10.1016/j.ijsolstr.2009.08.025
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