Browsing by Author "Atlamaz, Bensu"

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Makas bağlantıları ve katlanır paneller kullanılan yeni yayılabilir şemsiye kanopi önerileri
(2022) Atlamaz, Bensu; Akgün, Yenal
Deployable umbrella canopies are one of the most common types of kinetic roofs in the literature. These canopies deploy and contract according to the functional needs of the users and environmental conditions such as rain and sun. The main skeletons of the majority of these canopy structures in the literature are made up of different linkages and the cover materials are mostly different textile materials and membranes. A small group of deployable canopies is produced with pneumatic systems. In the literature, there is no umbrella canopy system in which scissor linkages and folding panels are used together as the main skeleton and cover. This study aims to develop a novel umbrella canopy system using scissor loops and folded plates. In the thesis, first, a detailed literature survey has been done on the kinetic roof structures and different classifications of these structures. Then, a new classification has been proposed for kinetic roof structures and a literature review of the kinetic roof structure has been conducted according to this classification. Afterward, the geometric design of planar scissor linkages has been introduced as unit-assembly and loop-assembly methods; and hybrid loop assemblies, which is a novel method, have been explained. Investigation of the novel deployable canopy system, its variations, kinematic and three-dimensional design processes, and digital fabrication steps constitute the next chapter of the thesis. In conclusion, an evaluation has been made between the proposed designs and existing umbrella canopies in the literature and suggestions for future works have been presented.
Proposal for a deployable architectural umbrella using scissor linkages and foldable plates
(Elsevier Ltd, 2025) Yenal Akgün; Charis J. Gantes; George D. Pantazis; Özgür Kilit; Canberk Kavuncuoğlu; Bensu Atlamaz; Kilit, Özgür; Pantazis, Georgios D.; Atlamaz, Bensu; Kavuncuoğlu, Canberk; Akgün, Yenal; Gantes, Charis J.
Deployable architectural umbrellas are widely used for providing shade in large open spaces combining functionality with aesthetic appeal. Most existing designs rely on structural mechanisms as the primary framework with membranes or textiles serving as the covering material. Although this approach reduces structural weight and simplifies deployment and detailing textile covers are often susceptible to environmental wear and damage from repeated use. This paper introduces a novel deployable architectural umbrella that utilizes scissor linkages for the main framework and rigid foldable plates for the cover. By employing these durable materials the design addresses the limitations of textile-based covers supports varied shading geometries and enables the integration of photovoltaic panels. The paper begins with a review of existing deployable umbrellas and canopy systems followed by a brief review of scissor linkage mechanisms in the literature. A detailed presentation of the proposed architectural design and its features is provided. A kinematic analysis is then conducted examining the system's workspace and geometric constraints. Finally structural analyses of a typical deployed configuration are presented to assess stiffness limitations highlighting the benefits and potential of this innovative deployable umbrella design. © 2025 Elsevier B.V. All rights reserved.