Indentation Characteristics Using Various Indenters: A Study Based on Laboratory and Numerical Tests

Laboratory and numerical indentations, using wedge-shaped, spherical and blunt indenters, were performed. The laboratory and numerical results agreed well that fluctuations of the indentation force occurred after the peaks. In addition, indentations by the wedge-shaped indenter generated median crac...

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Bibliographic Details
Published inGeotechnical and geological engineering Vol. 37; no. 6; pp. 4919 - 4931
Main Authors Liu, Jie, Wan, Wen, Xie, Senlin, Wang, Jun
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.12.2019
Springer Nature B.V
Subjects
Civil Engineering
Correlation analysis
Crack propagation
Cracks
Earth and Environmental Science
Earth Sciences
Fluctuations
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Indentation
Indenters
Laboratories
Original Paper
Stress propagation
Tensile stress
Terrestrial Pollution
Waste Management/Waste Technology
Wedges
Lateral crack
Median crack
Stress condition
Indentation
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Summary:Laboratory and numerical indentations, using wedge-shaped, spherical and blunt indenters, were performed. The laboratory and numerical results agreed well that fluctuations of the indentation force occurred after the peaks. In addition, indentations by the wedge-shaped indenter generated median cracks whereas, for the spherical and blunt indenters, median and lateral cracks formed. We inferred from the numerical study that the fluctuations correlate to the crack propagation. In addition, the subsequently concentrated tensile stress zones are responsible for the generation of the median and lateral cracks, caused by spherical and blunt indenters. However, for the wedge-shaped indenter, the tensile concentrated zone, forming at the early indentation stage, can cause the median crack.
ISSN:0960-3182
1573-1529
DOI:10.1007/s10706-019-00952-8