Yazar "Habashi, Akbar Sheidaei" seçeneğine göre listele

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  • Küçük Resim
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    An investigation of base isolation
    (Selçuk Üniversitesi Mühendislik-Mimarlık Fakültesi, 2012) Habashi, Akbar Sheidaei
    The effect of weak shear rigidity is important in the analysis of elastomeric bearings used for base isolation of buildings. In particular, the buckling load is low and the P-? effect is significant as compared to standard columns neglecting shear deformations. In this paper, a simple mechanical model accounting for both shear and flexural deformations is proposed to treat the P-? effect of elastomeric isolation bearings. With adequate choice of the model parameters, the simplified model agrees very well with an exact model in both static and dynamic cases. When applied to the experimental results for some natural rubber bearings, the model is found to describe with good accuracy the effects of axial load on the dynamic stiffness, the damping factor and the height reduction of bearings. A brief study of the post-buckling behaviour of elastomeric bearings using the simplified model is also presented.
  • Küçük Resim
    Öğe
    The investigation of the temparature effect on the screw connection on steel structures
    (Selçuk Üniversitesi Mühendislik-Mimarlık Fakültesi, 2013) Habashi, Akbar Sheidaei
    Recent international regulations have special terms for considering high temperature effects on steel and steel made product. Steel structures junctions are most important factor that determines these structures behavior firing and its effect on screw connection of steel structures behavior is studied by using finite difference method and ANSYS software. Results are compared with valid experimental results which finally led to appropriate responses to numerical modeling for such issues.