Defining Erosion Limit for Concrete

LUCCIONI, BIBIANA MARÍA; ARAOZ, GABRIEL; LABANDA, NICOLAS AGUSTIN

International journal of Protective Structures

Multi-Science Publishing

Año: 2013 vol. 4 p. 315 - 340

2041-4196

Numerical simulation is usually used for predicting the response ofconcrete and fiber reinforced concrete structures to blast or impactloads. Depending on both charge weight and standoff distance, blastloads can cause fracture and spalling of concrete. In order tonumerically reproduce these effects, an erosion model can be used toremove from the calculation the elements that have reached certaincriteria. This erosion model represents a numerical tool to avoid greatdistortion of Lagrange meshes. For this reason, its application to thesimulation of a physical phenomenon requires the calibration withexperimental results. A review of different erosion criteria and limitsused by different authors to simulate concrete under blast loads ispresented in this paper. Some application examples and comparisonswith experimental results are developed to show the effect of erosionlimit on damage results and the dependence on the materialsproperties, mesh size and scaled distance.