Fragile and Quasi-Brittle Fracture of Gypsum Boards with Circular Hole with Unevenly Distributed Compression

DOI

10.2991/isees-19.2019.63How to use a DOI?

Keywords

gypsum; brittle fracture; quasi-brittle fracture; medium stress criterion; hole; scale effect Introduction.

Abstract

The results of theoretical and experimental studies of the destruction of gypsum boards containing a circular hole and exposed to an unevenly distributed compressive load are presented. The samples made of high-strength gypsum brand GVVS-16 and construction gypsum brand G-5 were tested. The samples of high-strength gypsum were fragile, while specimens of gypsum showed a quasi-brittle nature of the destruction. To calculate the breaking load, it was proposed to use a modified non-local fracture criterion, which is the development of the average stress criterion, and contains a complex parameter characterizing the size of the pre-fracture zone and taking into account not only the structure of the material, but also the plastic properties of the material, the sample geometry and loading conditions. The results of the calculations are in good agreement with the experimental data obtained.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - S.V. Suknev
PY  - 2019/08
DA  - 2019/08
TI  - Fragile and Quasi-Brittle Fracture of Gypsum Boards with Circular Hole with Unevenly Distributed Compression
BT  - Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" dedicated to the 85th anniversary of H.I. Ibragimov (ISEES 2019)
PB  - Atlantis Press
SP  - 501
EP  - 504
SN  - 2590-3217
UR  - https://doi.org/10.2991/isees-19.2019.63
DO  - 10.2991/isees-19.2019.63
ID  - Suknev2019/08
ER  -