Communication science et technologie
Volume 12, Numéro 1, Pages 25-38
2014-01-01

Photoelastic And Numerical Analysis Of Stress Fields In A Plate Loaded On Its Edge And In Two Orthogonal Cylinders In Contact



Authors : Ali , Beldi Mustapha Bilek . Beldi Mustapha . Said Larbi . Said Djebali .

Abstract

Abstract The purpose of this work is to develop numerical solutions in order to determine rapidly and as accurately as possible stress fields developed in mechanical components. Stress values and principal stresses directions can be determined easily and rapidly. An experimental solution using two dimensional photoelasticity was first conducted on a plate loaded on its edge by a rigid steel cylinder. Experimental photoelastic fringes, obtained on a polariscope, are compared to the simulated ones. Another comparison was made, along the vertical axis of symmetry, between stress values determined experimentally and stress values determined by the finite element method. A numerical solution for two orthogonal cylinders in contact was developed. The finite element program allowed us to determine the isochromatic and the isoclinics fringes as well as the stress values on any given slice isolated inside the model, particularly in the neighborhood of the contact zone. Simulated photoelastic fringes were determined on a six millimeter slice thickness in order to obtain enough photoelastic fringes for comparison purposes with experimental fringes that can be obtained either by the stress freezing method coupled with two dimensional photoelasticity or by the optical slicing method which uses laser plans to isolate optically slices inside a stressed model.

Keywords

birefringent / photoelasticity / isoclinic / isochromatic / fringe / contact / stress / simulation.

Les articles similaires

Experimental And Numerical Analysis Of The Fields Of The Frozen Stresses In An Epoxy Sphere Using The Stress-freezing Method And Mechanical Slicing

Touahir Kamel .  Bilek Ali .  Bocher Philippe .  Beldi Mustapha . 
pages 233-247.

Numerical Analysis Of Laterally Loaded Single Pile

Khelifi Zakia .  Berga Abdelmadjid .  Terfaya Nazihe . 
pages 22-28.

Numerical Approach Of The Natural Convection In The Annular Space Delimited By Two Horizontal Eccentric Cylinders: Relative Eccentricity Effect

Ghernoug C .  Djezzar M . 
pages 23-30.

Numerical Simulation Of The Flows Around Two Cylinders Of Different Diameters

Mebarek-oudina F. .  Laouar A. .  Boudiaf M. . 
pages 15-18.

Numerical Investigation Of Laminar Mixed Convection Flow Between Two Parallel Planes In The Presence Of Rotating Cylinders

Aidaoui Lakhdar .  Lasbet Yahia .  Harzallah Bendaoud .  Khinech Ziane . 
pages 440-450.

Formats de citation