Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Effects of Stiffeners on Vibrations of Fiber-Reinforced and Laminated Composite Shells(Izmir Institute of Technology, 2018) Sarı, Tansel; Yardımoğlu, Bülent; Yardımoğlu, Bülent; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyVibration characteristics of fiber-reinforced and laminated composite paraboloidal shells with stiffeners are studied by Finite Element Method. The effects of stiffeners on natural frequencies are investigated by using a developed code in ANSYS. The developed code is verified by using several case studies on special cases of the present problem due to the lack of the present case in the reachable literature. Case studies are related with determination of natural frequencies of composite square plate, composite cylindrical shell, stiffened isotropic square plate, and isotropic paraboloidal shell of revolution. Aftervalidation of the developed computer code, effects on number of stiffener and cross-section of the stiffener on natural frequencies of fiber-reiforced and laminated composite paraboloidal shells are presented.Master Thesis Modal Analysis of Aerofoil Cross-Sectioned Wing Made of Laninated Composite and Filled With Foam(Izmir Institute of Technology, 2015) İskeçe, Barış; Yardımoğlu, Bülent; Yardımoğlu, Bülent; 03.10. Department of Mechanical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyModal analysis of aerofoil cross-sectioned wing made of laminated composite and filled with foam is studied by Finite Element Method with the help of ANSYS which is very powerful and well proven software all around the world. The effects of ratio of overhangs to mid-span and length of the thickened parts on natural frequencies are investigated by finite element models developed in ANSYS and the model is verified by theoretical results available in the literature.