XFEM Investigation of Engineered Cementitious Composite in Reinforced and Plain Beam Based on Experimental Results.

Autor: Asadi, Alanor, Neya, Bahram Navayi, Beygi, Morteza Hosseinali
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Zdroj: International Journal of Civil Engineering; Nov2024, Vol. 22 Issue 11, p2011-2030, 20p
Abstrakt: This study investigates crack growth and propagation in Engineered Cementitious Composite (ECC) beams reinforced with polyvinyl alcohol (PVA) fibers through numerical analysis. The research evaluates numerical findings alongside experimental data from a prior stage. Similar to the experimental phase, the numerical procedure models eight ECC beam specimens, comprising four with 2% and four with 1.5% PVA fibers, utilizing the extended finite element method (XFEM) in Abaqus software. Force-displacement and force-crack mouth opening displacement (CMOD) graphs are generated and compared with experimental results. The study demonstrates XFEM's high accuracy in numerically solving fracture problems and predicting structural behavior, as well as determining parameters assessing ECC behavior during crack growth. Findings reveal that ECC beams with 2% fibers exhibit lower loading capacity and higher displacement values, displaying greater CMOD and ductility compared to those with 1.5% fibers. Additionally, a slight impact on flexural capacity is observed with increasing PVA fiber percentages. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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