Static Analysis of Orthotropic Functionally Graded Material Cylinders with Finite Length by a Mesh-Free Method

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

رسول مرادی دستجردی ¹ ( کارشناس ارشد، دانشگاه آزاد اسلامی، واحد خمینی‌شهر، باشگاه پژوهشگران جوان، خمینی شهر، ایران. )
مهرداد فروتن ² ( دانشیار، گروه مهندسی مکانیک، دانشکده فنی- مهندسی، دانشگاه رازی، کرمانشاه، ایران )
سمیه عبداللهی بکتاش ³ ( کارشناس ارشد، گروه مهندسی مکانیک، دانشکده فنی- مهندسی، دانشگاه رازی، کرمانشاه، ایران )

Received: 2015-09-29 Accepted : 2015-09-29 Published : 2011-06-22

Keywords: Static Analysis, FGM, Mesh-Free, Orthotropic Cylinder, Transformation function,

Abstract :

In this paper static analysis of orthotropic functionally graded material (FGM) cylinders with finite length was carried out by a mesh-free method. MLS shape functions are used for approximation of displacement field in the weak form of equilibrium equation and essential boundary conditions are imposed by transformation method. In this simulation, an ax symmetric model is used. Mechanical properties of cylinders were assumed to be variable in the radial direction as a function of volume fraction. In this analysis, effects of the cylinder thickness and length, volume fraction exponent, type of materials layout and essential boundary conditions on displacement fields and stress distribution for orthotropic cylinders are investigated. The results of the proposed method for isotropic FGM cylinders were compared with corresponding results obtained from FEM and previous published works and a very good agreement are seen between them. Also by comparing the stress distributions of orthotropic FGM cylinders and corresponding results of homogeneous multilayered orthotropic cylinders were confirmed.

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