Towards a better understanding of the FPZ evolution during fracture and damage in quasi-brittle materials using mesomodels
The purpose of this paper is to propose new tools to describe the FPZ evolution during fracture and damage in quasi-brittle materials.A model taking into account the material mesoscale details is chosen in order to describe the failure process at the heterogeneities scale.This model is first validated by reproducing experimental loading curves (peak and softening regime) during three points bending tests on notched and unnotched concrete beams of different sizes.The model is then used to map the dissipated energy densities repartition during the failure process.It is shown that the FPZ length in the ligament direction does not depend on the initial notch size but on the ligament size whereas the FPZ width in the direction normal to the ligament highly depends on the initial notch size.
mesoscale modeling fracture process zone damage quasi-brittle materials
Laura B. Rojas-Solano Peter Grassl David Grégoire Gilles Pijaudier-Cabot
University of Pau,Anglet F64600,Franc University of Glasgow,Glasgow G128LT,United Kingdom University of Pau,Anglet F64600,France
国际会议
北京
英文
1-1
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）