A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems
A shading device for façade application was developed by combining twisting cylindrical shading elements with the smart use of shape-memory alloy (SMA) components. These allow a dynamic behaviour of a shading device, which does not require electrical motors or manual activation, nor sophisticated el...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Stichting OpenAccess
2020-10-01
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| Series: | Journal of Facade Design and Engineering |
| Subjects: | |
| Online Access: | https://journals.open.tudelft.nl/jfde/article/view/4700 |
| _version_ | 1798025104405299200 |
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| author | Lorenzo Vercesi Alberto Speroni Andrea Giovanni Mainini Tiziana Poli |
| author_facet | Lorenzo Vercesi Alberto Speroni Andrea Giovanni Mainini Tiziana Poli |
| author_sort | Lorenzo Vercesi |
| collection | DOAJ |
| description | A shading device for façade application was developed by combining twisting cylindrical shading elements with the smart use of shape-memory alloy (SMA) components. These allow a dynamic behaviour of a shading device, which does not require electrical motors or manual activation, nor sophisticated electronic controls. The technical development of the system involved research of cylindrical shading geometries, which can transition from straight to hourglass configuration, given a 180° rotation, with limited mechanical movement. This is induced by the stroke of a SMA spring, which functions as both actuator and sensor. Its design is tailored to achieve a passive adaptive component that can be activated under set temperature stimuli, caused by incident solar radiation on a façade. A combination of computer simulations and physical tests were carried out to assess the optimal conditions of the SMA spring activation in a temperate climate condition (Cfa to the Koppen-Geiger classification), correlating transition temperature (50°C), incident solar radiation (>300W/m2 ) and the forces required to operate the cylinders. In parallel, an experimental apparatus was developed to validate the concept on a geometrical point of view, and to ensure its constraints were compatible with a SMA spring control system. |
| first_indexed | 2024-04-11T18:13:04Z |
| format | Article |
| id | doaj.art-9f2c2ec8536248598b96261d4d36e015 |
| institution | Directory Open Access Journal |
| issn | 2213-302X 2213-3038 |
| language | English |
| last_indexed | 2024-04-11T18:13:04Z |
| publishDate | 2020-10-01 |
| publisher | Stichting OpenAccess |
| record_format | Article |
| series | Journal of Facade Design and Engineering |
| spelling | doaj.art-9f2c2ec8536248598b96261d4d36e0152022-12-22T04:10:02ZengStichting OpenAccessJournal of Facade Design and Engineering2213-302X2213-30382020-10-0181A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading SystemsLorenzo Vercesi0Alberto Speroni1Andrea Giovanni Mainini2Tiziana Poli3Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Italy. Buro Happold, London, United KingdomDepartment of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Italy,Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, ItalyDepartment of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, ItalyA shading device for façade application was developed by combining twisting cylindrical shading elements with the smart use of shape-memory alloy (SMA) components. These allow a dynamic behaviour of a shading device, which does not require electrical motors or manual activation, nor sophisticated electronic controls. The technical development of the system involved research of cylindrical shading geometries, which can transition from straight to hourglass configuration, given a 180° rotation, with limited mechanical movement. This is induced by the stroke of a SMA spring, which functions as both actuator and sensor. Its design is tailored to achieve a passive adaptive component that can be activated under set temperature stimuli, caused by incident solar radiation on a façade. A combination of computer simulations and physical tests were carried out to assess the optimal conditions of the SMA spring activation in a temperate climate condition (Cfa to the Koppen-Geiger classification), correlating transition temperature (50°C), incident solar radiation (>300W/m2 ) and the forces required to operate the cylinders. In parallel, an experimental apparatus was developed to validate the concept on a geometrical point of view, and to ensure its constraints were compatible with a SMA spring control system.https://journals.open.tudelft.nl/jfde/article/view/4700Passive adaptiveshading systemshading devicedynamic, innovativedouble-skinshape memory alloy springs |
| spellingShingle | Lorenzo Vercesi Alberto Speroni Andrea Giovanni Mainini Tiziana Poli A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems Journal of Facade Design and Engineering Passive adaptive shading system shading device dynamic, innovative double-skin shape memory alloy springs |
| title | A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems |
| title_full | A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems |
| title_fullStr | A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems |
| title_full_unstemmed | A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems |
| title_short | A Novel Approach to Shape Memory Alloys Applied to Passive Adaptive Shading Systems |
| title_sort | novel approach to shape memory alloys applied to passive adaptive shading systems |
| topic | Passive adaptive shading system shading device dynamic, innovative double-skin shape memory alloy springs |
| url | https://journals.open.tudelft.nl/jfde/article/view/4700 |
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