A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades
<span>The recent demand for architectural transparency has drastically increased the use of glass material for structural purpose. However, connections between structural glass members represent one of the most critical aspects of glass engineering, due to the fragile behaviour of this materia...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Stichting OpenAccess
2015-05-01
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| Series: | Journal of Facade Design and Engineering |
| Online Access: | http://jfde.tudelft.nl/index.php/jfde/article/view/883 |
| _version_ | 1798035344504913920 |
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| author | Jonas Dispersyn Manuel Santarsiero Jan Belis Christian Louter |
| author_facet | Jonas Dispersyn Manuel Santarsiero Jan Belis Christian Louter |
| author_sort | Jonas Dispersyn |
| collection | DOAJ |
| description | <span>The recent demand for architectural transparency has drastically increased the use of glass material for structural purpose. However, connections between structural glass members represent one of the most critical aspects of glass engineering, due to the fragile behaviour of this material. In that respect, research activities on adhesive point-fixings are currently on-going. The mechanical behaviour of adhesive point-fixings is affected by large nonlinearities, which are usually investigated by nonlinear Finite Element Analysis (FEA). This paper focuses on the geometrical and the material nonlinearities of adhesive point-fixings for glass structures. Firstly, the nonlinear material behaviour of two selected adhesives are investigated by means of uniaxial tension and compression tests on the bulk material. The production of specimens, test methodology and displacement rate dependency are discussed. Secondly, the nonlinear stress distribution occurring in the adhesive and the joint stiffness is investigated by means of nonlinear FEA. The effects of several parameters on the mechanical behaviour of adhesive point-fixings, such as the connection dimensions and adhesive elastic properties, are studied. The adhesive stress-strain curves resulting from the experimental campaign show that the adhesives exhibit a large nonlinear behaviour. The results show that the stress and strain at failure reduce as the displacement rate is reduced. From the numerical investigations it is concluded that large nonlinearity involves the mechanical behaviour of adhesive point-fixing which cannot be neglected. The stress distribution within the adhesive deviates from uniform nominal stresses, even in case of simple load condition, with stress peaks up to four times higher than nominal stresses.</span> |
| first_indexed | 2024-04-11T20:56:55Z |
| format | Article |
| id | doaj.art-d89b0efc1e404bd0bf23a082cf7b9f6f |
| institution | Directory Open Access Journal |
| issn | 2213-302X 2213-3038 |
| language | English |
| last_indexed | 2024-04-11T20:56:55Z |
| publishDate | 2015-05-01 |
| publisher | Stichting OpenAccess |
| record_format | Article |
| series | Journal of Facade Design and Engineering |
| spelling | doaj.art-d89b0efc1e404bd0bf23a082cf7b9f6f2022-12-22T04:03:40ZengStichting OpenAccessJournal of Facade Design and Engineering2213-302X2213-30382015-05-0121-285108856A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facadesJonas Dispersyn0Manuel Santarsiero1Jan Belis2Christian Louter3Laboratory for Research on Structural Models (LMO), Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University, GhentSteel Structures Laboratory (ICOM), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), LausanneLaboratory for Research on Structural Models (LMO), Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University, GhentSteel Structures Laboratory (ICOM), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne<span>The recent demand for architectural transparency has drastically increased the use of glass material for structural purpose. However, connections between structural glass members represent one of the most critical aspects of glass engineering, due to the fragile behaviour of this material. In that respect, research activities on adhesive point-fixings are currently on-going. The mechanical behaviour of adhesive point-fixings is affected by large nonlinearities, which are usually investigated by nonlinear Finite Element Analysis (FEA). This paper focuses on the geometrical and the material nonlinearities of adhesive point-fixings for glass structures. Firstly, the nonlinear material behaviour of two selected adhesives are investigated by means of uniaxial tension and compression tests on the bulk material. The production of specimens, test methodology and displacement rate dependency are discussed. Secondly, the nonlinear stress distribution occurring in the adhesive and the joint stiffness is investigated by means of nonlinear FEA. The effects of several parameters on the mechanical behaviour of adhesive point-fixings, such as the connection dimensions and adhesive elastic properties, are studied. The adhesive stress-strain curves resulting from the experimental campaign show that the adhesives exhibit a large nonlinear behaviour. The results show that the stress and strain at failure reduce as the displacement rate is reduced. From the numerical investigations it is concluded that large nonlinearity involves the mechanical behaviour of adhesive point-fixing which cannot be neglected. The stress distribution within the adhesive deviates from uniform nominal stresses, even in case of simple load condition, with stress peaks up to four times higher than nominal stresses.</span>http://jfde.tudelft.nl/index.php/jfde/article/view/883 |
| spellingShingle | Jonas Dispersyn Manuel Santarsiero Jan Belis Christian Louter A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades Journal of Facade Design and Engineering |
| title | A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades |
| title_full | A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades |
| title_fullStr | A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades |
| title_full_unstemmed | A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades |
| title_short | A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades |
| title_sort | preliminary study of the nonlinearity of adhesive point fixings in structural glass facades |
| url | http://jfde.tudelft.nl/index.php/jfde/article/view/883 |
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