Numerical simulation of aluminium stiffened panels subjected to axial compression: Sensitivity analyses to initial geometrical imperfections and material properties

R. M. F. Paulo*, F. Teixeira-Dias, R. A. F. Valente

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In the present work, a set of finite element analyses (FEA) was carried out, using Abaqus to reproduce the mechanical behaviour of integrally stiffened panels when subject to longitudinal compression. Since most fabrication processes, such as welding, introduce distortions and affect the material properties, the sensitivity to these defects was assessed. Different shapes and magnitudes of the initial geometrical imperfections were tested and a high sensitivity was observed to both factors on the ultimate load. The existence of a heat affected material showed no influence on the ultimate strength of the tested panels. (C) 2012 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalThin-Walled Structures
Volume62
DOIs
Publication statusPublished - Jan 2013

Keywords

  • Integrally stiffened panels
  • Elasto-plastic buckling
  • Finite element modelling
  • Initial geometrical imperfections
  • Heat affected zone
  • ULTIMATE STRENGTH
  • STABILITY BEHAVIOR
  • PERFORMANCE GAINS
  • BUCKLING ANALYSIS

Fingerprint

Dive into the research topics of 'Numerical simulation of aluminium stiffened panels subjected to axial compression: Sensitivity analyses to initial geometrical imperfections and material properties'. Together they form a unique fingerprint.

Cite this