Modeling segmented active constrained layer damping using hybrid displacement field

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Abstract

A finite element model for composite plates with active constrained layer (ACL) damping is developed using hybrid displacement fields. The higher order displacement field is used in the composite plate to capture the transverse shear deformations. Since viscoelastic and piezoelectric layers are made from certain isotropic material, the first and the second order displacement fields are employed in these layers to maintain computational efficiency in problem solution. The refined displacement fields defined in different material layers are derived by applying the displacement and transverse shear stress continuity conditions at interfaces of different materials and the traction-free boundary conditions at the top and the bottom surfaces of the structure. The anelastic displacement field method is used to implement the viscoelastic material model to enable time domain finite element analysis. The finite element model is validated by comparison with NASTRAN 3D finite element modal analysis. The developed technique is used to investigate the dynamic responses of a cantilever composite plate with ACLs. Numerical results are presented with both the open and closed loop control. Significant improvements are observed with the use of active control treatment.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAIAA
Pages2703-2711
Number of pages9
Volume4
StatePublished - 1999
EventProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit - St. Louis, MO, USA
Duration: Apr 12 1999Apr 15 1999

Other

OtherProceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit
CitySt. Louis, MO, USA
Period4/12/994/15/99

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ASJC Scopus subject areas

  • Architecture

Cite this

Gu, H., Chattopadhyay, A., & Nam, C. (1999). Modeling segmented active constrained layer damping using hybrid displacement field. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (Vol. 4, pp. 2703-2711). AIAA.