A FEM Multiscale Homogenization Procedure using Nanoindentation for High Performance Concrete

Journal of Applied and Computational Mechanics

Fazilay Abbès¹  Boussad Abbès¹  Rim Benkabou²  Aïssa Asroun² 

[1] GRESPI, University of Reims Champagne-Ardenne, UFR SEN, Campus Moulin de la Housse, Reims, 51687, France;LGC, Department of Civil Engineering, Djillali Liabès University, Rue Kadi Benkadi, Sidi-Bel-Abbès, 22000, Algeria;

关键词: homogenization;    nanoindentation;    finite element simulation;    elasto-viscoplastic model;    multiscale modeling;    high performance concrete;   

DOI  :  10.22055/jacm.2019.29832.1640

来源: DOAJ

【 摘 要 】

This paper aims to develop a numerical multiscale homogenization method for prediction of elasto-viscoplastic properties of a high performance concrete (HPC). The homogenization procedure is separated into two-levels according to the microstructure of the HPC: the mortar or matrix level and the concrete level. The elasto-viscoplastic behavior of individual microstructural phases of the matrix are identified from nanoindentation data using an inverse identification method. The micromechanical results are then used as input parameters for numerical elasto-viscoplastic homogenization at microscale. The mortar level is analyzed with numerical homogenization by using the finite element simulation to predict the overall elasto-viscoplastic properties of HPC. The results are compared with macroscopic experimental and analytical results from the literature showing a good agreement.

【 授权许可】

Unknown