Stability of delaminated composite plates using a higher order theory

Adrian G. Radu, Aditi Chattopadhyay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A refined higher order shear deformation theory is used to investigate the instability associated with delaminated composite plates subject to dynamic loads. Both transverse shear and rotary inertia effects are taken into account. The theory is capable of modeling the displacement field above and bellow the delamination. All stress free boundary conditions at free surfaces as well as delaminated interfaces are satisfied by this theory. The procedure is implemented using the finite element method. Delamination is modeled as a multi-point constraint using the transformation matrix approach. The natural frequencies are computed and compared with three-dimensional NASTRAN results and available experimental data. The effect of delamination on the critical buckling load and the first two instability regions is investigated for various loading conditions and plate thickness. As expected, the natural frequencies and the critical buckling load of the delaminated plates decrease with increase in delamination length. Increase in delamination length also causes instability regions to be shifted to lower parametric resonance frequencies.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAIAA
Pages519-528
Number of pages10
Volume1
EditionI
StatePublished - 2000
Event41st AIAA/ASME/AHS/ASC Structures, Structural Dynamics, and Materials Conference and ExhibitAIAA/ASME/AHS Adaptive Structures ForumAIAA Non-Deterministic Approaches ForumAIAA Space Inflatables Forum - Atlanta, GA, USA
Duration: Apr 3 2000Apr 6 2000

Other

Other41st AIAA/ASME/AHS/ASC Structures, Structural Dynamics, and Materials Conference and ExhibitAIAA/ASME/AHS Adaptive Structures ForumAIAA Non-Deterministic Approaches ForumAIAA Space Inflatables Forum
CityAtlanta, GA, USA
Period4/3/004/6/00

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ASJC Scopus subject areas

  • Architecture

Cite this

Radu, A. G., & Chattopadhyay, A. (2000). Stability of delaminated composite plates using a higher order theory. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (I ed., Vol. 1, pp. 519-528). AIAA.