Modeling the dynamic effects of delamination in adaptive composite laminate

Robert P. Thornburgh, Aditi Chattopadhyay

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

18 Scopus citations

Abstract

A new approach is developed to model the dynamic response of laminated composite plates with piezoelectric patches and internal delaminations. The equations of motion are formulated using a coupled piezoelectric-mechanical theory solving for mechanical strains and electric displacement. The finite element method with refined higher order theory is used to model the composite plate. Delamination is modeled as a set of sublaminate laminates and continuity is enforced at the boundaries by means of a transformation matrix. Results show a comparison of the natural frequencies based on eigenvalues with the dynamic response using a discrete time integration method. A discrete time integration approach is used to compute the dynamic response. The time integration method allows for effective modeling of the contact between the sublaminates without destabilizing oscillations in the analytically computed displacements. The results demonstrate the effectiveness of this modeling technique and the influence of delamination on the electrical response of piezoelectric devices attached to the delaminated structure.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Pages1944-1954
Number of pages11
Volume3
StatePublished - 2002
Event43rd Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: Apr 22 2002Apr 25 2002

Other

Other43rd Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityDenver, CO
Period4/22/024/25/02

ASJC Scopus subject areas

  • Architecture

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    Thornburgh, R. P., & Chattopadhyay, A. (2002). Modeling the dynamic effects of delamination in adaptive composite laminate. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (Vol. 3, pp. 1944-1954)