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|Title:||Over-nonlocal gradient enhanced plastic-damage model for concrete|
|Authors:||Hien Poh, L.|
|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|
|Appears in Collections:||Staff Publications|
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