Browsing by Author "Akgun, Yenal"

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Citation - WoS: 19
Citation - Scopus: 21
A critical review on classification and terminology of scissor structures
(Int. Association for Shell and Spatial Structures, 2019) Feray Maden; Yenal Akgün; Gökhan Kiper; Şebnem Gür; Müjde Yar; Koray Korkmaz; Korkmaz, Koray; Yar, MÜJde; Kiper, GÖKhan; Akgun, Yenal; Maden, Feray; Gur, Sebnem
When the existing literature on the research of scissor structures is thoroughly investigated it is seen that different researchers use different terminologies and classifications especially for the definition of the primary units and the motion type. Some of the studies define the whole geometry based on the geometric properties of the primary scissor units and the unit lines while some other studies define it according to the loops. All these studies use different names for similar elements. This article aims to review the literature on the classification and terminology of scissor structures and represent the state of art on the studies. Tables are represented showing all approaches in the literature. In addition the article criticizes the missing points of each terminology and definition and proposes some new terminology. In order to arrive at this aim different definitions of the primary scissor units and motion types used in key studies in the literature are investigated thoroughly. With several examples it is demonstrated that naming the scissor units according to the resulting motion type might be misleading and it is better to specify the motion type for the whole structure. A classification for transformation of planar curves is presented. © 2019 Elsevier B.V. All rights reserved.
Citation - WoS: 8
Citation - Scopus: 7
A guide for a guide: using UIA publications for an SDG-focused studio
(EMERALD GROUP PUBLISHING LTD, 2023) Yenal Akgun; Ozlem-Erdogdu Erkarslan; Pinar Neseliler; Erkarslan, Ozlem-Erdogdu; Neseliler, Pinar; Akgun, Yenal; Erdoğdu Erkarslan, Özlem
PurposeThis paper aims to present a data mapping analysis that can be used for aligning the studio course with the United Nations (UN) Sustainable Development Goals (SDGs) by teaching professionals.Design/methodology/approachThe UN 2030 Agenda for Sustainable Development Goals (SDGs) released in 2015 has received global attention from various disciplines and sectors. Professional organizations in architecture have accelerated the engagement between their members and SDGs. This paper analyzes the two volumes of the Architecture Guide to the UN 17 Sustainable Development Goals prepared by the efforts of professional organizations or consortiums and published by the UIA between 2018 and 2020. The buildings presented as best practices in these guidebooks were analyzed to demonstrate various ways of capturing the SDGs in the architectural studio when designing the course content process and teaching materials.FindingsThe analysis presents the kinship among the SDGs and architectural concepts which are retrieved from the sample buildings in the guidebooks. The findings also refer to the targets for each goal to generate an easily applicable pedagogical path in architectural education. The results are presented as a model approach for SDG-focused studio teaching.Originality/valueAn in-depth review of the literature reveals the need for research based on SDG-focused pedagogies and the UN Architecture Guide.
Design and implementation of online learning process for complex architectural projects: a graduation project example during Covid-19 period
(Festival Architettura Edizioni, 2021) Özlem Erdoǧdu Erkarslan; Yenal Akgün; Erkarslan, Ozlem Erdogdu; Akgun, Yenal
[No abstract available]
Citation - WoS: 7
Citation - Scopus: 7
Geometric Design of Planar Scissor Linkages with Hybrid Loop Assemblies
(ASCE-AMER SOC CIVIL ENGINEERS, 2022) Nazli Hilal Sarisayin; Yenal Akgun; Feray Maden; Ozgur Kilit; Kilit, Ozgur; Sarisayin, Nazli Hilal; Sarlsayln, Nazll Hilal; Akgun, Yenal; Maden, Feray
Due to their expansion capabilities and the simplicity of their design scissor linkages have been used in both architecture and engineering for various applications such as expandable roofs and shelters movable bridges furniture and as parts of mechanisms. The two main design methods used for scissor linkages are the unit-based method and the loop-based method. While the unit-based method is based on serial multiplication of the scissor units the loop-based method is based on aligning predefined loop types onto the desired curve. When the input parameter is the desired curvature for the finally deployed configuration of the linkage the loop-based method is easier and more convenient for defining the scissor units to create the whole linkage geometry. Most of the existing studies on the loop-based method deal with identical or arbitrary loops. Hybrid loop assemblies have not yet been studied although they may offer different geometric alternatives. This work aimed to fill this gap in the literature and present a geometric design approach for scissor linkages composed of hybrid loop assemblies using frieze patterns. First the basic terminology such as loop types loop assemblies and frieze patterns is introduced. Then we discuss scissor linkages using hybrid loops generated using a predefined rectilinear geometry in which frieze groups are used to provide diverse variations. The kinematic definitions of the represented linkages are then explained. To reveal the potential applications of the scissor linkages composed of hybrid loops a case study was conducted in which the proposed linkages were used as a canopy structure. After discussing the potential for using hybrid loops and their deployment we present the concluding remarks and make suggestions for future research. (C) 2022 American Society of Civil Engineers.
Kinetic Architecture and BIM Integration A case study on a Bricard linkage canopy system
(ECAADE-EDUCATION & RESEARCH COMPUTER AIDED ARCHITECTURAL DESIGN EUROPE, 2022) Canberk Kavuncuoglu; Yenal Akgun; Ozan Onder Ozener; Kavuncuoglu, Canberk; Akgun, Yenal; Ozener, Ozan Onder; B Pak; G Wurzer; R Stouffs
This paper presents a case study focusing on BIM integration to kinetic structure design based on an extended kinetic BIM (KBIM) ontology through a Bricard linkage canopy system. With the parametric abstraction of structural system components and kinematic behaviors the design process was carried out in a BIM environment using KBIM models and objects. The study results show the effectiveness of the proposed KBIM framework for the synthesis and assessment of design alternatives according to total system performance architectonic composition and environmental responsiveness.
Citation - WoS: 3
Citation - Scopus: 4
Tectonics of kinetic architecture: Moving envelope changing space and the shades of the shed
(FRONTIERS MEDIA SA, 2022) Yenal Akgun; Ozlem Erdogdu Erkarslan; Canberk Kavuncuoglu; Erkarslan, Ozlem Erdogdu; Kavuncuoglu, Canberk; Akgun, Yenal
Buildings in our day are no more frozen pieces of music as ascribed by Johann Wolfgang von Goethe. They can move rotate flip and perform various physical gestures. This paper aims to explore the spatial aesthetical and technical characteristics of kinetic buildings within the framework of the theory of tectonics which is still far away from covering the art form of movement. The study has been organized into two phases. The first phase sets up the theoretical framework of the topic by exploring the main dichotomy of the tectonic discourse on ontological and representational parts of the building and introduces the main concepts of kinetic architecture related to the characterization of architectural space. The second phase is a case study on The Shed as also known as Culture Shed in Hudson Yards in New York City. This part focuses on the interrelations between tectonics and the physical movement of architectural elements. The results indicate that the type of movement and the role of moving elements change not only the architectural space but also the tectonic character of the building. While some movements and moving parts are directly related to the representational aspects some change the ontological character of the building. The impact of the movement on the tectonic character is a topic that hasn't been well investigated yet and has the potential to be developed through further research. As a result the theoretical findings of this study can contribute to tectonic thinking during the design process of kinetic architectural products.