Influence of edge crack on frequencies of thin plate in bending

Nguyen Thi Hien Luong, Vuong Quang Giang
Author affiliations

Authors

  • Nguyen Thi Hien Luong Ho Chi Minh City University of Technology
  • Vuong Quang Giang Ho Chi Minh City University of Technology

DOI:

https://doi.org/10.15625/0866-7136/27/2/5720

Keywords:

bending cracked plate, frequency, finite element method, Ressner-Mindlin' theory of plate, element of Barsoum

Abstract

This paper investigates the influence of crack location and crack length on changes in natural frequencies of bending thin plate. To perform this analysis, a computing program called CRACK-PLATE, using the finite element method based on the Ressner-Mindlin' theory of plate is developed. In order to achieve a high accuracy, an isoparametric element of Barsoum is combined with an 8-node quadrilateral isoparametric element. The numerical results show that the natural frequencies are very sensitive to the crack presence in the bending thin plate. This study is a basis for crack identification based on natural frequencies of plates.

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Published

29-06-2005

Issue

Section

Research Article