Domain-boundary element method for forced vibrations of fiber-reinforced laminated beams


Ahmed Z., Eshraghi I., DAĞ S.

INTERNATIONAL JOURNAL FOR COMPUTATIONAL METHODS IN ENGINEERING SCIENCE & MECHANICS, vol.21, no.3, pp.141-158, 2020 (Journal Indexed in ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 3
  • Publication Date: 2020
  • Doi Number: 10.1080/15502287.2020.1772905
  • Title of Journal : INTERNATIONAL JOURNAL FOR COMPUTATIONAL METHODS IN ENGINEERING SCIENCE & MECHANICS
  • Page Numbers: pp.141-158
  • Keywords: Boundary element, composite materials, fiber reinforced, vibration, Timoshenko beam, impulsive load, SCALAR WAVE-EQUATION, D-BEM APPROACH, COMPOSITE BEAMS, DYNAMIC-ANALYSIS, SANDWICH BEAMS, PLATES

Abstract

A domain-boundary element method for forced vibration analysis of fiber-reinforced laminated composite beams is introduced. Utilizing static fundamental solutions as weight functions in weighted residual statements, governing partial differential equations of motion are reduced to a system of four coupled integral equations. Domain discretization leads to a system of ordinary differential equations in time, which is solved by the Houbolt method. Developed procedures are verified through comparisons to analytical solution for isotropic beams. Parametric results illustrate elastodynamic responses of composite beams subjected to various loading types. It is shown that angle-ply laminates undergo higher displacements compared to cross-ply laminates.