A coupled DQ-Heaviside-NURBS approach to investigate nonlinear dynamic response of GRE cylindrical shells under impulse loads

Yasin Heydarpour*, Morteza Mohammadzaheri, Mojtaba Ghodsi, Payam Soltani, Farooq Al-Jahwari, Issam Bahadur, Badar Al-Amri

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

As a first endeavour, nonlinear dynamic response of the glass fibre-reinforced​ epoxy (GRE) laminated composite cylindrical shells under an impulse load is investigated based on the first-order shear deformation theory (FSDT) of shells. Green's strain and von Kármán hypothesis are assumed to consider the geometrical nonlinearity due to large deformation in the model. A new solution procedure composed of the differential quadrature method (DQM) based on the direct projection of the Heaviside function and a non-uniform rational B-spline (NURBS) based multi-step time integration scheme is employed to discretize the governing equations in the spatial and temporal domains, respectively. The approach is validated by showing its fast convergence rate and performing comparison studies with available solutions in the limited available cases. A comprehensive parametric study is performed then on the model and the effects of the geometrical parameters, number of layers, load location, time durations, and types of impulse loading on the nonlinear dynamic responses of GRE laminated composite cylindrical shells are investigated.

Original languageEnglish
Article number107958
JournalThin-Walled Structures
Volume165
DOIs
Publication statusPublished - Aug 2021

Keywords

  • cylindrical shells
  • DQM
  • Glass fibre-reinforced epoxy laminated composite
  • Heaviside function
  • Impulse load
  • multi-step time integration scheme

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering

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