Numerical Simulation of Two-Point and Four-Point Bending Fatigue Tests on Asphalt Mix Using Intrinsic Material Parameters Calibrated from Digital Image Correlation Data

2021 ◽  
pp. 1423-1429
Author(s):  
Ibishola Santos ◽  
Paul Marsac ◽  
Olivier Chupin ◽  
Ferhat Hammoum
Keyword(s):  
Numerical Simulation ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Fatigue Tests ◽  
Image Correlation ◽  
Bending Fatigue ◽  
Material Parameters ◽  
Four Point Bending ◽  
Correlation Data ◽  
Asphalt Mix

scholarly journals Validation of a Numerical Bending Model for Sandwich Beams with Textile-Reinforced Cement Faces by Means of Digital Image Correlation

2019 ◽  
Vol 9 (6) ◽  
pp. 1253 ◽  
Author(s):  
Jolien Vervloet ◽  
Tine Tysmans ◽  
Michael El Kadi ◽  
Matthias De Munck ◽  
Panagiotis Kapsalis ◽  
...  
Keyword(s):  
Numerical Model ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Numerical Models ◽  
Sandwich Panels ◽  
Surface Strain ◽  
Image Correlation ◽  
Four Point Bending ◽  
Reinforced Cement ◽  
Correlation System

Sandwich panels with textile-reinforced cement (TRC) faces merge both structural and insulating performance into one lightweight construction element. To design with sandwich panels, predictive numerical models need to be thoroughly validated, in order to use them with high confidence and reliability. Numerical bending models established in literature have been validated by means of local displacement measurements, but are missing a full surface strain validation. Therefore, four-point bending tests monitored by a digital image correlation system were compared with a numerical bending model, leading to a thorough validation of that numerical model. Monitoring with a digital image correlation (DIC) system gave a highly detailed image of behaviour during bending and the strains in the different materials of the sandwich panel. The measured strains validated the numerical model predictions of, amongst others, the multiple cracking of the TRC tensile face and the shear deformation of the core.

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