Browsing by Author "Mitropoulou, C."

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Citation - WoS: 3
Citation - Scopus: 3
Dynamic shelter structure
(CRC PRESS-BALKEMA, 2019) F. Maden; D. Olmez; S. Gur; M. Y. Uncu; C. Mitropoulou; Olmez, D.; Mitropoulou, C.; Uncu, M. Y.; Maden, F.; Gur, S.; PJS Cruz
Dynamic building envelopes have entered the mainstream practice of architecture in the last decades. Such dynamic systems are capable of changing their geometric configurations repeatedly and reversibly relative to environmental conditions and occupant requirements. Thus they may offer innovative building solutions by folding expanding or curling. This study proposes a dynamic shelter structure that provides several shape options in response to the changing needs. In order to generate the shelter structure first loop assembly method used for developing the structure is introduced. Then a parametric model is built in Grasshopper (R) not only to analyze the geometric properties of the loops and their alternative geometric forms but also to develop a flexible tool allowing changes at topological geometrical and structural levels. Based on the geometric analysis the structural mechanism is constructed. Transformation capability and possible configurations are studied. The proposed structure can transform itself into multiple forms (from planar configuration to S-shaped and reversed S-shaped configurations) with single DOF although the existing single DOF scissor structures can deploy between two geometric shapes.
Citation - WoS: 1
Citation - Scopus: 2
Structural comparison of scissor-hinge linkages
(CRC PRESS-BALKEMA, 2019) F. Maden; Y. Akgun; K. Yuceturk; E. Aktas; M. Y. Uncu; C. Mitropoulou; Mitropoulou, C.; Akgün, Y.; Aktaş, E.; Uncu, M.Y.; Maden, F.; Yücetürk, K.; PJS Cruz
Deployable structures can deploy from a compact to an expanded configuration by changing their sizes. The behaviors of these structures depend on some parameters such as geometric shape member sizes and kinematic properties. To provide the deployment not only the arrangements of structural members but also some restrictions must be considered. Moreover contiguous members of the structures must let the large rotations to provide the transformation between different geometric forms from fully folded to fully deployed configurations. These requirements have an important impact on the fundamental properties of the structures related with structural performance such as stiffness and strength. In this paper stiffness of different scissor-hinge linkages are analyzed and compared. These linkages cover the same span with almost the same geometry and have the unit elements with same size and same weight. However the geometry of unit elements is different from each other. The paper investigates the effect of this difference on the stiffness of whole system.