Nonlinear dynamic instability of laminated composite stiffened plates subjected to in-plane pulsating loading

Abstract

A nonlinear finite element dynamic instability analysis of laminated composite stiffened plates subjected to in-plane harmonic edge loading is presented in this article along with the linear and nonlinear dynamic response study. The eight-noded isoparametric degenerated shell element and a compatible three-noded curved beam element are used to model the stiffened plates. Bolotin method is applied to analyze the dynamic instability regions in linear case. Incremental Harmonic Balance (IHB) method is applied to solve the nonlinear frequency response equations and Newmark-β method is used to solve the linear and nonlinear time history response equations.

Keywords:

• Laminated composite stiffened plates
• nonlinear analysis
• dynamic instability
• dynamic response
• degenerated shell element
• frequency response

Disclosure Statement

The authors declare that there is no conflict of interest.

Data Availability Statement

All data included in this study are available upon request by contact with the corresponding author.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.