Dynamic behaviour of orthotropic elliptic paraboloid shells with openings


Darılmaz K.

STRUCTURAL ENGINEERING AND MECHANICS, vol.63, no.2, pp.225-235, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.12989/sem.2017.63.2.225
  • Journal Name: STRUCTURAL ENGINEERING AND MECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.225-235
  • Istanbul Technical University Affiliated: Yes

Abstract

In this paper a vibration study on orthotropic elliptic paraboloid shells with openings is carried out by using a hybrid stress finite element. The formulation of the element is based on Hellinger-Reissner variational principle. The element is developed by combining a hybrid plane stress element and a hybrid plate element. Natural frequencies of orthotropic elliptic paraboloid shells with and without openings are presented. The influence of aspect ratio, height ratio, opening ratio and material angle on the frequencies and mode shapes are investigated.