Modeling concrete under high frequency loading using a multi-scale method

Amin Karamnejad, Lambertus Johannes Sluys, V. P. Nguyen

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

1 Citation (Scopus)

Abstract

Concrete cracking under high frequency impact loads is modeled using a multi-scale approach. The macro-crack is modeled as a strong discontinuity using XFEM and a gradient-enhanced damage model is used to model diffuse damage at the meso-scale. A standard computational homogenization method is used to obtain the constitutive law for the bulk material and a continuous-discontinuous computational homogenization scheme which is based on a failure zone averaging technique is used to obtain a cohesive law for the macro-crack. In the multi-scale model, at the macro-scale a dynamic analysis is performed and the meso-scale model is solved as a static problem. The inertia forces at the meso-scale model are taken into account via a so-called dispersion tensor which depends on the heterogeneity of the meso-scale model. The meso-scale inertia forces appear as additional body forces in the macro-scale model and cause dispersion of the propagating wave. The proposed dispersive multi-scale scheme is verified by comparing the multi-scale results with a direct numerical simulation. The objectivity of the scheme with respect to the representative volume element size is demonstrated.

Original languageEnglish
Title of host publicationComputational Modelling of Concrete Structures
Subtitle of host publicationProceedings of EURO-C 2014. St. Anton am Arlberg, Austria; 24-27 March 2014
EditorsNenad Bićanić, Herbert Mang, Günther Meschke, René de Borst
Place of PublicationBoca Raton FL USA
PublisherCRC Press
Pages189-197
Number of pages9
Volume1
ISBN (Electronic)9781315762036
ISBN (Print)9781138026414
Publication statusPublished - 2014
Externally publishedYes
EventEURO-C Conference 2014 - St. Anton am Arlberg, Austria
Duration: 24 Mar 201427 Mar 2014

Conference

ConferenceEURO-C Conference 2014
Country/TerritoryAustria
CitySt. Anton am Arlberg
Period24/03/1427/03/14

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