پديد آورنده :
بالاخانه اي، مجتبي
عنوان :
تحليل ارتعاشات پوسته هاي تركيبي(استوانه-مخروط) چرخان با ويژگي هاي عملكردي درجه بندي شده
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
طراحي كاربردي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
سيزده، 99ص.: مصور، جدول، نمودار
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
مصطفي غيور
استاد مشاور :
عليرضا شهيدي
توصيفگر ها :
ارتعاشات آزاد , پوسته مخروطي شكل , انتگرال گيري ديفرانسيلي , نظريه كلاسيك
استاد داور :
سعيد ضيايي راد، حسن نحوي
تاريخ ورود اطلاعات :
1395/12/09
چكيده انگليسي :
Vibration Analysis of Rotating Conical Cylindrical Shells with Functionally Graded Properties Mojtaba Balakhanei m balakhanei@me iut ac ir Date of Submission Department of Mechanical Engineering Isfahan University of Technology Isfahan Iran Degree M Sc Language FarsiSupervisor Mostafa Ghayour ghayour@cc iut ac irAbstract Conical cylindrical shells are widely used in generous engineering applications such as rockets turbines components of missiles and submarine They are of the most widely engineering structures and variousstudies have been conducted in the analysis of their behavior Vibration analysis is one of the most importantissues in the field Nowadays in order to improve the behavior and properties of the shells functionallygraded materials FGM are used in the productions Mechanical properties of them as non homogeneousmaterials are changed continuously Usually these materials are made from ceramic and metal The ceramicconstituent of the material provides the high temperature resistance due to its low thermal conductivity Theductile metal constituent prevents fracture caused by stresses due to high temperature gradient In this research free vibration of rotating functionally graded truncated conical shells and conical cylindrical shell is investigated The classical theory is used in thin walled conical shells and conical cylindrical shells In classical shell theory it is assumed that transverse normal and shear strains are zero Thedisplacement components are continuous through the thickness The free vibration equations of motionaround this equilibrium state are derived applying the Hamilton s principle using energy functions method Using the GDQ method the partial differential equations are transformed in to the linear algebraic equations natural frequencies and mode shapes are obtained by using eigenvalue equation by considering boundaryconditions The results show convergence of this method and are compared with other published works By severalnumerical solutions the effects of material property graded index angular velocity geometrical parametersand boundary conditions on the natural frequency are investigated Keywords Free Vibration Conical Shells Conical Cylindrical Shells Functionally Graded Materials GDQ Classical Theory
استاد راهنما :
مصطفي غيور
استاد مشاور :
عليرضا شهيدي
استاد داور :
سعيد ضيايي راد، حسن نحوي
