Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
Browse
9 results
Search Results
Master Thesis A Study on the Use and Design of Mechanisms in Art and Architecture(Izmir Institute of Technology, 2020) Maral, Mesude Oraj; Korkmaz, KorayThis study consists of research on developmental processes, fundamentals, kinematic properties, and design methods of art and architectural examples that involve mechanisms and a proposal of a novel method of designing polygonal deployable surfaces. The effect of motion studies on art and architecture is analyzed from the first technical studies of motion and portable examples of architecture. The pre-industrial automata, acoustic designs, musical instruments, water-lifting devices, and aqueducts were designed by artists and architects as well; windmills that are the first rotating structures, clocks, clock towers, construction machines and early examples of movable bridges are examined. The kinematic properties and fundamentals of mechanisms are analyzed. The kinematic structural analyses of contemporary art and architectural products are conducted by drawing kinematic diagrams, demonstrating link and joint types and numbers; and mobility calculations. The primary units and assembly methods of them are examined. Strengthening the bond among the fields of kinetic architecture, art and mechanism science is intended. The present study is the first source in which examples from the related fields and corresponding kinematic science are explicitly transmitted for artists and architects. Finally, a novel design method for polygonal deployable surfaces that is adaptable to climatic, functional, visual and/or social needs is developed. The method starts with the kinematic design of the triangular primary unit, which is topologically Bennett's plano-spherical mechanism. The planar position provides covering surfaces, while the spherical linkage generates a 3D dynamic form during movement. The design is adapted to polygons and multiplied in Archimedean tilings. A single actuator can drive all designs. The modularity provides designs versatility and flexibility.Master Thesis Design of Single Degree-Of Planar Linkages With Antiparallelogram Loops Using Loop Assembly Method(Izmir Institute of Technology, 2017) Gür, Şebnem; Korkmaz, KorayThis research deals with the methodical derivation of single degree-of-freedom (dof) deployable and transformable linkages with antiparallelogram loops. The study starts with the review of literature on the mechanisms used in planar deployable structures, scissor mechanisms in particular. Scissor mechanisms have been subject of many research, including those that examine them in term of the loops formed. In this research, a summary of the loops observed in previous researches are mentioned. The simplest single-dof linkage is the four-bar linkage. Its loop geometry is quadrilateral. The loops defined formerly in the deployable structures literature are compared to the geometries classified under quadrilaterals and seen that use of antiparallelogram loops are yet to be discovered. While forming novel linkages with antiparallelogram loops, the loop assembly method that Hoberman utilized during his discovery of angulated scissor linkages is used. In order to lay out alternatives of loop arraying options, pattern generating methods are examined. Frieze group operations are found to be most suitable. Using those, loop assembly variations are formed. Later, links formed by these arrays are determined and linkages are formed, modelled and simulated using Solidworks®. Among many alternatives, five of them are chosen due to their novelties in specific aspects. In conclusion findings are compared to the previous research in the literature. Potentials of the novel linkages in terms of architecture are discussed and further research subjects are offered.Master Thesis Design of Novel Transformable Planar Structural Linkages With Angulated Scissor Units(Izmir Institute of Technology, 2016) Yar, Müjde; Korkmaz, KorayIn this dissertation, the primary objective is to propose a novel geometrical construction technique in order to construct a planar and single degree of freedom structural linkage that can transform between concave and convex configurations. In the literature, most of the deployable structures transform between two known configurations: stowed and deployed. Especially, the deployable structures with radial movement capability have a fixed center point. Starting this point of view, current study deals with a new type of angulated scissor structural linkage that can change its form between bended upward and bended downward configurations by moving the center point of the structure along a direction. In other words, it can change its curvature during the transformation process. The most important point of the study is the usage of kite and dart loops to construct angulated scissor linkages. The geometry of kite or its concave version dart loop provides to obtain angulated scissor bars. The angulated scissor unit, that is composed of the mentioned angulated bars, is different from the existing ones in the literature because they do not provide deployability conditions like known angulated scissor units. Thus, the planar structure that is composed of new type of angulated scissor units has different transformation capability. It transforms between bended upward and downward configurations. In this study, modelling and simulation with computer soft wares have been used as a research method. The proposed structural linkage has been modelled using Solidworks®. As a part of the position analysis, the variations of the structure according to different parameters have been exposed in Microsoft Excel®.Master Thesis Geometric and Mobility Analysis of the Miura-Ori Pattern and Derivations(Izmir Institute of Technology, 2016) Hüseynli, Ayten; Korkmaz, KorayOrigami is a Japanese art of folding paper. Recently it has started to be used in aerospace applications such as deployable masts, satellite antennas, and in architectural applications such as emergency shelters, temporary shelters, portable exhibition stands. Deployable plate structures based origami art are attractive to both architects and engineers because of their structural and spatial qualities. They have special geometries according to the rigid origami patterns. The Miura-Ori is a rigid origami pattern that is formed from a tessellated arrangement of a single repeated unit consists of four quadrangle plates. It has fully folded and fully deployed configurations. This research investigates geometric and mobility aspects of Miura-Ori pattern with its derivations and explore the possibilities of constructing a deployable plate structure using the same pattern. The first part of the research investigates geometry of the Miura patterns. The aim is to generate derivations by changing the input parameters. Small scale physical models are built to verify the geometric design guidelines. Miura unit consisted of four plates and four joints is a single degree of freedom spherical mechanism. The second part of the research is concentrated on mobility analysis. The aim is to develop a method for removing excessive plates and joints without changing the mobility. The established equations assist us to determine nth term of the excessive plates and joints. A Method of Double Arrangement (MoDA) is developed in order to determine the placement of excessive plates. Finally, a deployable plate structure based on Miura-Ori pattern is proposed for an architectural application. However, the plates cause obstruction of the sky, thereby affecting sunlight and daylight availability inside the building. Thus, some excessive plates are reduced according to the proposed method. The final form of the structure lets to get more energy from the sun to provide heating and lighting.Master Thesis Design of a Reconfigurable Deployable Structure for Post Disaster Housing(Izmir Institute of Technology, 2014) Ataer, Fulya; Korkmaz, Koray; Kiper, GökhanIn this thesis, the possibility of constructing reconfigurable deployable structure composed of planar linkage units has been explored. The first part of the thesis is devoted to literature survey on housing recovery. When the current researches on post disaster housing are investigated, it is observed that most of post disaster housing or temporary buildings in the literature are predefined portable, demountable or relocatable buildings. Deployable buildings serve for a single function. A study into the existence of alternative forms of a reconfigurable deployable structure has been done. The conditions for the alternative forms to be a multi-functional building have been derived. Reconfigurable deployable structure presented here is a single degrees-of-freedom (DoF) multi-loop linkage which has more than two configurations. The alternative forms that a linkage is constructed with the same links and connections are called configurations or assembly modes of the linkage. During its motion, the linkage may pass from one assembly mode to another, which is called reconfiguration or assembly mode change. Design and position analysis of the linkage mechanism have been implemented in Microsoft Excel® environment. The link lengths can be varied in this environment and the motion of the structure can be simulated by changing input joint parameters. Four different case studies have been designed in Microsoft Excel®. A reconfigurable deployable structure can be used as a multi-functional shelter or canopy which can take many forms in a few minutes for urgent needs after disasters, military purpose or public needs. Its deployed and retracted (or compact) geometries are explored. As a case study the dimensions of links are presented. Installation process for different functions is explained. The full concept for the structure, from outer covering material to foundation is then detailed. Finally, a sample material cost analysis is performed to determine if the product is financially feasible.Master Thesis A Research on Structural Design Approaches Within the Scope of Theory and Application(Izmir Institute of Technology, 1998) Korkmaz, Koray; Eyüce, ÖzenThe integration of creative, imaginative and economically feasible structures into the design process of _buildings has always been an essential issue in the history of architecture. The aim of this study is; to explore the relationship between the design of structural systems and the formation of architectural space, to display the changes in structure/space relationship in respect to scientific progress from the beginning of the age of positivism until today. This study is structured in two parts. At first, a morphological classification is made within a retrospective overview to explore the relationship of structure and space. Secondly, the age of positivism and the effects of positivism on architectural theories are explored to determine the changes in structure/space relationship. Today, the new developments in architectural space concept, such as "dynamic stability" affects the design of structures. Still, it is clear that the structure is an indispensable necessity during the process of shaping the space and architectural end product "building", whether the space is static or dynamic.Master Thesis The Interaction of Reinforced Concrete Skeleton Systems Andarchitectural Form Subjected To Earthquake Effects(Izmir Institute of Technology, 2010) İnan, Tuğba; Korkmaz, Koray3 The interaction of architectural form and structural configuration has become a serious issue in the building industry because of the poor seismic performance of reinforced concrete buildings in Turkey. Therefore, it has a determinative role on earthquake behaviour of buildings. The study focuses on R/C skeleton systems which are commonly constructed in building industry of Turkey. In this study, structural irregularities in plan and vertical direction have been investigated in detail based on Turkish Earthquake Code, 2007. Four main cases are generated based on each structural irregularity in plan. These cases consist of 29 main parametric models and totally 265 models with sub models. They are designed as to have symmetrical or asymmetrical plan geometry and regular or irregular rigidity distribution. All models are analyzed by using the structural analyzing software, IdeCAD Static 6.0055. The changes in the earthquake behaviour of buildings were examined according to the number of stories, number of axes, configuration of structural elements, floor openings, projections in plan and vertical direction. Many findings are obtained and assessed as a result of the analysis for each structural irregularity. The most remarkable result shows that structural irregularities can be observed in completely symmetric buildings in terms of plan geometry and rigidity distribution due to the inaccurate structural system selection. Moreover, it has emerged that symmetry in the rigidity distribution is more important than the symmetry in the plan geometry.Master Thesis A Method To Design Kinetic Planar Surface With Mathematical Tessellation Techniques(Izmir Institute of Technology, 2010) Gazi Gezgin, Aylin; Korkmaz, KorayDue to rapid change in activities on modern society in XXth century, need of adaptation has emerged, which was the necessary precondition for the rise of the concept of motion or kinetic in architecture. Kinetic architecture is a controversial interdisciplinary area between architecture and mechanisms science. Many kinetic designers and researchers usually reach transformable, deployable or foldable structures by using mechanical knowledge. However, there are not many researches that focus on the surfaces between kinetic structures. Those surfaces generally covered with flexible or flat materials. Kinetic architects, who usually deal with a particular type of the mechanism, can easily control the design of mechanism. Therefore, a method is necessary to construct a network with planar mechanisms for variable building surfaces due to the fact that it can be a problem of studying during the design process of kinetic building parts. Many questions might be a problem such as how many links should be used, what kind of joints and platform should be chosen and finally the mobility of the whole kinetic system. To design a surface has been one of the major problems for architects. Through the history, architecture has benefited from mathematics such as golden ratio, fractal geometry and tessellation. Tessellation is a kind of mathematical technique that was usually used to cover a plane without any gaps or overlaps, because of this properties, it uses to design surfaces. So, the main purpose of this study is to develop a methodology to design kinetic planar surfaces with mathematical regular tessellation technique in the light of architectural, mechanical and mathematical interdisciplinary approach.Master Thesis Bio-Inspired Design of a Kinetic Node for Adaptable Structures(Izmir Institute of Technology, 2011) Acar, Melodi Simay; Korkmaz, KorayThe architectural design should no longer consider just in terms of today's demands, but also the life cycle and the further requirements of the built environment. The design process should consider the adaptation to the changing conditions which can be in terms of the building usage, environmental factors or even in the changes ofsociological demands. Rapid change in activities of modern society and building technologies, has led to the need for adaptable spaces. Those spaces can be obtained by the adaptable structures which have potential for using our resources in efficient way and also for responding to the era's needs. This can be achieved with kinetic structural systems and learning adaptable structures from nature.Nature has always inspired humanity by solving the basic needs with minimum material and sustainable solutions. Observation of nature enables architects and engineers familiar with highly developed structures and lead to the creation of new forms. The designs that are produced by learning from nature lead to practical engineering solutions in terms of sustainability. The aim of this research is to propose a joint; kinetic node with multidisciplinary approach. This kinetic node is designed by inspiring from the minimum energy shape configurations and the structural orders in natural structures especially the cell membrane and analyzing the joining details of space truss structural systems and the geometric principles of Bricard linkage mechanism. This new kinetic node gives capability to construct variable static and dynamic structural systems while constructing in different structural orders.