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Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/33222FCD-1AD3-43B8-BDF5-BC00AA922C95 | - |
| Identifier | http://www.researchgate.net/publication/44898827_Bending_of_marble_with_intrinsic_length_scales__A_gradient_theory_with_surface_energy_and_size_effects | - |
| Identifier | https://doi.org/10.1051/jp4:1998849 | - |
| Language | en | - |
| Extent | 8 pages | en |
| Title | Bending of marble with intrinsic length scales : a gradient theory with surface energy and size effects | en |
| Creator | Vardoulákīs, Iōánnīs | en |
| Creator | Exadaktylos Georgios | en |
| Creator | Εξαδακτυλος Γεωργιος | el |
| Creator | Kourkoulis, Stavros K | en |
| Content Summary | A gradient bending theory is developed based on a strain energy function that includes the classical Bernoulli-Euler term, the shape correction term (microstructural length scale) introduced by Timoshenko, and a term associated with surface energy (micromaterial length scale) accounting for the bending moment gradient effect. It is shown that the last term is capable to interpret the size effect in three-point bending (3PB), namely the decrease of the failure load with decreasing beam length for the same aspect ratio. This theory is used to describe the mechanical behaviour of Dionysos-Pentelikon marble in 3PB. Series of tests with prismatic marble beams of the same aperture but with different lengths were conducted and it was concluded that the present theory predicts well the size effect. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-11-05 | - |
| Date of Publication | 1998 | - |
| Subject | Marble | en |
| Subject | Length scale | en |
| Subject | Size effect | en |
| Subject | Surface energy | en |
| Subject | Physics, Multidisciplinary | en |
| Subject | Aspect ratio | en |
| Subject | Bending moments | en |
| Subject | Failure (mechanical) | en |
| Subject | Loads (forces) | en |
| Subject | Mechanical properties | en |
| Subject | Partial differential equations | en |
| Subject | Spatial variables measurement | en |
| Subject | Strain rate | en |
| Subject | Surface tension | en |
| Subject | Bernoulli-Euler term | en |
| Subject | Gradient bending theory | en |
| Subject | Intrinsic length scales | en |
| Subject | Strain energy function | en |
| Subject | Continuum mechanics | en |
| Bibliographic Citation | I. Vardoulakis, G. Exadaktylos and S. Kourkoulis, "Bending of marble with intrinsic length scales : a gradient theory with surface energy and size effects," J. Physique IV, vol. 8, pp. 399-406, Nov. 1998. doi:10.1051/jp4:1998849 | en |
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