A COMPARATIVE STUDY ON PROPAGATION OF ELASTIC WAVES IN RANDOM PARTICULATE COMPOSITES

Authors

  • MOHAMMAD RAHIMZADEH PHD STUDENT, SCHOOL OF MECHANICAL ENGINEERING, IRAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, TEHRAN, IRAN
  • KAMRAN DANESHJOO PROFESSOR, SCHOOL OF MECHANICAL ENGINEERING, IRAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, TEHRAN, IRAN

Keywords:

PARTICULATE COMPOSITE, RANDOM MEDIA, WAVE PROPAGATION, SPHERICAL INCLUSION.

Abstract

THIS PAPER AIMS TO CONDUCT A COMPARATIVE STUDY ON FOUR DIFFERENT MODELS OF EFFECTIVE FIELD AND EFFECTIVE MEDIUM FOR MODELING PROPAGATION OF PLANE ELASTIC WAVES THROUGH THE COMPOSITES CONTAINING SPHERICAL PARTICLES WITH RANDOM DISTRIBUTION. EFFECTIVE ELASTIC PROPERTIES ALONG WITH THE NORMALIZED PHASE VELOCITY AND ATTENUATION OF THE AVERAGE WAVE WAS NUMERICALLY EVALUATED BY THE MODELS. THE PLANE INCIDENT WAVE WAS CONSIDERED LONGITUDINAL TO GET THE RESULTS. THE NUMERICAL ANALYSES WERE PERFORMED ON FOUR TYPES OF COMPOSITES IN THE RANGE OF LOW TO INTERMEDIATE FREQUENCY AND DIFFERENT VOLUME FRACTIONS. JUDGMENT ABOUT THIS COMPARATIVE STUDY IS DONE BASED ON PHYSICAL AND THEORETICAL CONCEPTS IN THE WAVE PROPAGATION PHENOMENON. THE OBTAINED RESULTS PROVIDE A GOOD VIEWPOINT IN USING DIFFERENT MODELS FOR STUDYING PROPAGATION OF THE PLANE ELASTIC WAVES IN VARIOUS PARTICULATE COMPOSITES.

Published

2014-04-29

Issue

Section

Articles