Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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Author: search.filters.author.Kiper, GokhanSubject: search.filters.subject.Deployable Structures

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  • Article
    Design of Rollable Reciprocal Frame Network
    (int Assoc Shell & Spatial Structures-iass, 2024) Ozen, Gulcin; Korkmaz, Koray; Kiper, Gokhan
    In the literature, reciprocal frames have been studied mostly for static structures. Studies on kinetic reciprocal frames are very limited. This study investigates two degrees-of-freedom reciprocal frame fans, and a novel deployable reciprocal frame network is obtained. While the network has a single degree-of-freedom in the crosssection, it has multi degrees-of-freedom in the longitudinal section. The network can be rolled to obtain a compact form and takes the form of a vault form when deployed. The way the nexors come together in the designed network is similar to the Da Vinci Bridge. The only difference is that cylindrical and prismatic joints are used in the intersection points to make the designed network deployable.
  • Article
    Citation - WoS: 12
    Citation - Scopus: 13
    Mobility Analysis of Tripod Scissor Structures Using Screw Theory
    (Pergamon-elsevier Science Ltd, 2024) Liao, Yuan; Kiper, Gokhan; Krishnan, Sudarshan
    Mechanisms consisting of spatial scissor units have different kinematic behaviors than those of planar scissors. However, their kinematics, especially the mobility analysis, has not received enough attention. Two types of deployable asseblies are analyzed in this paper, namely the translational and mirrored assemblies. Both the assemblies are made of tripod scissor units, and their instantaneous mobility are examined using screw theory. The study starts on the configuration where all the members have the identical deployment angle. Firstly, the geometric property of each assembly was studied. Then, screw-loop equations were developed based on graph theory and closure equations. Finally, the mobility of each assembly was computed using linear algebra. Following the analysis, physical prototypes were constructed to validate the results, and several different motion modes were obtained for the translational assembly. The analysis reveals different kinematic behaviors of the two assemblies. In the given configuration, the translational assemblies have four instantaneous degrees of freedom, while the mirrored assemblies have only a single instantaneous degree of freedom.