پديد آورنده :
قادري، محمد
عنوان :
تحليل كمانش الاستيك - پلاستيك صفحه ي مستطيلي هدفمند تحت بارگذاري فشاري تك محوره و دو محوره
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
طراحي كاربردي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
دوازده، 83ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
مهدي سلماني تهراني
استاد مشاور :
عليرضا شهيدي
توصيفگر ها :
مواد هدفمند , روش ريلي - ريتز , نظريه هاي نموي و تغيير شكل
تاريخ نمايه سازي :
9/3/94
استاد داور :
صالح اكبرزاده، مصطفي جمشيديان
تاريخ ورود اطلاعات :
1396/10/02
چكيده انگليسي :
84 Elastic Plastic Buckling Analysis of a FGM Rectangular Plate under Uniaxial and Biaxial Compression Mohammad Ghaderi m ghaderi@me iut ac ir Date of Submission 2015 02 24 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Mehdi Salmani Tehrani tehrani@cc iut ac irAbstractHeterogeneous structure of functionally graded materials and gradual continuous variation of these materialsmade them to find growing applications in different areas such as heat shield gas turbine cover in order toreduce slate heat cover in gas motors components of heat exchangers plasma cover in nuclear components artificial bone electro magnetic fields etc In this thesis elastic plastic buckling of a FGM Rectangular plateunder uniaxial and biaxial compression has been investigated To this end a MAPLE and MATLABcomputer code has been developed A metal metal type has been assumed for the FG plate Commercialaluminum and ST1403 steel were chosen as the special case study The mechanical properties of the plate including elasticity modulus and Ramberg Osgood parameters were assumed to vary according to a power law and exponential functions through the thickness Derivations of equations are based on the classical platetheory CPT To minimize the integral criterion of stability based on Rayleigh Ritz method In this method the displacement functions of the plate are approximately represented by the product of mathematicallycomplete two dimensional polynomial functions and boundary equations raised to appropriate powers thatensure the satisfaction of the geometric boundary conditions Substituting the trial function in the stabilitycriterion and minimizing with respect to the unknown coefficients results in a homogeneous algebraic set ofequations in terms of unknown coefficients For non trivial solution the determinant of coefficient matrixshould be equated to zero Using this equation critical buckling load is determined The results of presentstudy were compared with existing analytical solutions for homogenous rectangular plate and a goodagreement was observed The plastic buckling behaviour of the plate is captured by using the incremental anddeformation theories of plasticity The effect of boundary condition type FGM power index plate thicknessratio loading ratio and aspect ratio on the critical elastic plastic buckling load has been investigated Resultsshow that increasing the thickness ratio and decreasing FGM power index in volume fraction lead toincreasing elastic plastic critical buckling load Keywords Functionally graded material thin rectangular plate elastic plastic buckling Rayleigh Ritzmethod incremental and deformation theories
استاد راهنما :
مهدي سلماني تهراني
استاد مشاور :
عليرضا شهيدي
استاد داور :
صالح اكبرزاده، مصطفي جمشيديان
