ELASTIC ANALYSIS OF PRESSURIZED THICK FGM CYLINDERS WITH EXPONENTIAL VARIATION OF MATERIAL PROPERTIES USING TSDT

Authors

  • HAMED GHAROONI PH.D. STUDENT, MECHANICAL ENG., SHAHROOD UNIV., SHAHROOD, IRAN
  • MEHDI GHANNAD ASSIST. PROF., MECHANICAL ENG., SHAHROOD UNIV., SHAHROOD, IRAN

Keywords:

EXPONENTIAL FUNCTION, FGM, THICK CYLINDER, TSDT, FEM

Abstract

IN THIS RESEARCH, THE GENERAL GOVERNING SET OF DIFFERENTIAL EQUATIONS FOR AXISYMMETRIC THICK FG PRESSURIZED CYLINDERS WITH EXPONENTIAL FUNCTION OF MATERIAL PROPERTIES IS DERIVED BASED ON THIRD ORDER SHEAR DEFORMATION THEORY. AFTERWARDS, A GENERAL ANALYTICAL SOLUTION OF GOVERNING EQUATIONS BASED ON EIGEN VALUES PROBLEMS IS CONDUCT-ED FOR CYLINDERS UNDER CLAMPED ENDS CONDITION. FURTHERMORE, A NUMERICAL MODELING IS DONE IN ORDER TO COMPARE THE RESULTS OF TWO DIFFERENT SOLUTION AND PROVE THE ACCURACY OF ANALYSIS. THE DISPLACE-MENTS AND STRESSES RESULTED FROM FEM AND TSDT ARE DEPICTED FOR A CASE STUDY ALONG THE RADIAL AND LONGITUDINAL DIRECTION OF THE CYLIN-DER. AFTERWARDS, THE EFFECT OF INTERNAL AND EXTERNAL PRESSURE, FGM INHOMOGENEITY CONSTANTS AND HIGHER ORDER APPROXIMATION IS INVES-TIGATED. THE RESULTS OF SDT AND FEM SHOW GOOD AGREEMENT AND PROVE THE FACT THAT USAGE OF FGM CYLINDERS CAUSES LOWER VALUES OF DISPLACEMENTS AND STRESSES.

Author Biographies

HAMED GHAROONI, PH.D. STUDENT, MECHANICAL ENG., SHAHROOD UNIV., SHAHROOD, IRAN

PH.D. STUDENT, MECHANICAL ENG.,

MEHDI GHANNAD, ASSIST. PROF., MECHANICAL ENG., SHAHROOD UNIV., SHAHROOD, IRAN

ASSIST. PROF., MECHANICAL ENG.,

Published

2015-04-10

Issue

Section

Articles