Cracking patterns of brittle hemispherical domes: an experimental study
Crack formation in hemispherical domes is a distinguished problem in structural mechanics. The safety of cracked domes has a long track record; the evolution of the cracking pattern received less attention. Here, we report displacement-controlled loading tests of brittle hemispherical dome specimens...
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Gruppo Italiano Frattura
2022-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3267/3419 |
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| author | Siwen Cao Andr�s A. Sipos |
| author_facet | Siwen Cao Andr�s A. Sipos |
| author_sort | Siwen Cao |
| collection | DOAJ |
| description | Crack formation in hemispherical domes is a distinguished problem in structural mechanics. The safety of cracked domes has a long track record; the evolution of the cracking pattern received less attention. Here, we report displacement-controlled loading tests of brittle hemispherical dome specimens, including the evolution of the meridional cracking pattern. The 27 investigated specimens, 20 cm in diameter, were prepared in 3D printed molds, and their material is one of the three mixtures of gypsum and cement. We find that neither the (limited) tensile strength nor the exact value of the thickness significantly affects the statistical description of the cracking pattern, i.e., the cracking phenomenon is robust. The maximal number of the meridional cracks never exceeds seven before the fragments� disintegration (collapse). We find that the size distribution of the fragments exhibits a lognormal distribution. The evolution is reflected in the load-displacement diagrams recorded in the test, too, as significant drops in the force are accompanied by an emergence of one or more new cracks, reflecting the brittle nature of the phenomenon. A simple, stochastic fragmentation model, in which a segment is fragmented at either in the middle or at the fourth point, fairly recovers the observed size distribution. |
| format | Article |
| id | doaj-art-57cbab5df9a44edc8a24e86393f58d1f |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-57cbab5df9a44edc8a24e86393f58d1f2025-01-03T00:39:56ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-01-01165926531010.3221/IGF-ESIS.59.2010.3221/IGF-ESIS.59.20Cracking patterns of brittle hemispherical domes: an experimental studySiwen CaoAndr�s A. SiposCrack formation in hemispherical domes is a distinguished problem in structural mechanics. The safety of cracked domes has a long track record; the evolution of the cracking pattern received less attention. Here, we report displacement-controlled loading tests of brittle hemispherical dome specimens, including the evolution of the meridional cracking pattern. The 27 investigated specimens, 20 cm in diameter, were prepared in 3D printed molds, and their material is one of the three mixtures of gypsum and cement. We find that neither the (limited) tensile strength nor the exact value of the thickness significantly affects the statistical description of the cracking pattern, i.e., the cracking phenomenon is robust. The maximal number of the meridional cracks never exceeds seven before the fragments� disintegration (collapse). We find that the size distribution of the fragments exhibits a lognormal distribution. The evolution is reflected in the load-displacement diagrams recorded in the test, too, as significant drops in the force are accompanied by an emergence of one or more new cracks, reflecting the brittle nature of the phenomenon. A simple, stochastic fragmentation model, in which a segment is fragmented at either in the middle or at the fourth point, fairly recovers the observed size distribution.https://www.fracturae.com/index.php/fis/article/view/3267/3419cracking patternbrittle materialhemispherical domeevolutionexperimental study |
| spellingShingle | Siwen Cao Andr�s A. Sipos Cracking patterns of brittle hemispherical domes: an experimental study Fracture and Structural Integrity cracking pattern brittle material hemispherical dome evolution experimental study |
| title | Cracking patterns of brittle hemispherical domes: an experimental study |
| title_full | Cracking patterns of brittle hemispherical domes: an experimental study |
| title_fullStr | Cracking patterns of brittle hemispherical domes: an experimental study |
| title_full_unstemmed | Cracking patterns of brittle hemispherical domes: an experimental study |
| title_short | Cracking patterns of brittle hemispherical domes: an experimental study |
| title_sort | cracking patterns of brittle hemispherical domes an experimental study |
| topic | cracking pattern brittle material hemispherical dome evolution experimental study |
| url | https://www.fracturae.com/index.php/fis/article/view/3267/3419 |
| work_keys_str_mv | AT siwencao crackingpatternsofbrittlehemisphericaldomesanexperimentalstudy AT andrsasipos crackingpatternsofbrittlehemisphericaldomesanexperimentalstudy |