BUCKLING AND VIBRATION OF FUNCTIONALLY GRADED NON-UNIFORM CIRCULAR PLATES RESTING ON WINKLER FOUNDATION

Authors

  • ROSHAN LAL INDIAN INSTITUTE OF TECHNOLOGY, ROORKEE
  • NEHA AHLAWAT INDIAN INSTITUTE OF TECHNOLOGY, ROORKEE

Keywords:

FUNCTIONALLY GRADED CIRCULAR PLATES, BUCKLING, DIFFERENTIAL TRANSFORM, AXISYMMETRIC VIBRATIONS

Abstract

ANALYSIS AND NUMERICAL RESULTS FOR THE AXISYMMETRIC VIBRATIONS OF FUNCTIONALLY GRADED CIRCULAR PLATES SUBJECTED TO UNIFORM IN-PLANE FORCE HAVE BEEN PRESENTED ON THE BASIS OF CLASSICAL PLATE THEORY. THE MECHANICAL PROPERTIES OF THE PLATE MATERIAL ARE ASSUMED TO VARY AS A GENERAL FUNCTION OF THICKNESS PARAMETER. A SEMI-ANALYTICAL APPROACH NAMELY, DIFFERENTIAL TRANSFORM METHOD HAS BEEN EMPLOYED TO SOLVE THE DIFFERENTIAL EQUATION GOVERNING THE MOTION OF SUCH SIMPLY SUPPORTED AND CLAMPED PLATES. THE EFFECT OF VOLUME FRACTION INDEX AND THE IN-PLANE FORCE PARAMETER HAS BEEN STUDIED ON THE FIRST THREE NATURAL FREQUENCIES OF VIBRATION. BY ALLOWING THE FREQUENCY TO APPROACH ZERO, THE CRITICAL BUCKLING LOADS FOR BOTH THE PLATES HAVE BEEN COMPUTED. TWO-DIMENSIONAL MODE SHAPES FOR SPECIFIED PLATES HAVE BEEN PLOTTED. A COMPARISON OF RESULTS HAS BEEN PRESENTED.

Author Biographies

ROSHAN LAL, INDIAN INSTITUTE OF TECHNOLOGY, ROORKEE

PROFESSOR, DEPARTMENT OF MATHEMATICS

NEHA AHLAWAT, INDIAN INSTITUTE OF TECHNOLOGY, ROORKEE

RESEARCH SCHOLAR, DEPARTMENT OF MATHEMATICS

Published

2015-07-07

Issue

Section

Articles