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

被引：18
作者：
Vervloet, Jolien [1 ]
Tysmans, Tine [1 ]
El Kadi, Michael [1 ]
De Munck, Matthias [1 ]
Kapsalis, Panagiotis [1 ]
Van Itterbeeck, Petra [2 ]
Wastiels, Jan [1 ]
Van Hemelrijck, Danny [1 ]
机构：
[1] VUB, Dept Mech Mat & Construct, Pl Laan 2, B-1050 Brussels, Belgium
[2] BBRI, Dept Struct, Ave P Holoffe 21, B-1342 Limelette, Belgium
来源：
APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 06期
关键词：
finite element model; real scale bending experiments; shear; structural insulating sandwich panel; PANELS; BEHAVIOR; PERFORMANCE;
D O I：
10.3390/app9061253
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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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页数：16
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