A new time domain spectral plate finite element (FE) is developed to provide fast numerical calculations of guided waves and transient phenomena in laminated composite and sandwich plates. A new multifield layerwise laminate theory provides the basis for the FE, which incorporates cubic Hermite polynomial splines for the approximation of the in-plane and transverse displacement fields through the thickness of the plate, enabling the modeling of symmetric and antisymmetric wave modes. The time domain spectral FE with multi-degrees-of-freedom (DOF) per node is subsequently formulated, which uses integration points collocated with the nodes to yield consistent diagonal lumped mass matrix which expedites the explicit time integration process. Numerical simulations of wave propagation in aluminum, laminated carbon/epoxy and thick sandwich plates are presented and validated with an analytical solution and a three-dimensional (3D) solid element; moreover, the capability to accurately and rapidly predict antisymmetric and symmetric guided waves is demonstrated.
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June 2017
Research-Article
A Hermite Spline Layerwise Time Domain Spectral Finite Element for Guided Wave Prediction in Laminated Composite and Sandwich Plates
C. S. Rekatsinas,
C. S. Rekatsinas
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
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D. A. Saravanos
D. A. Saravanos
Professor
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
e-mail: saravanos@mech.upatras.gr
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
e-mail: saravanos@mech.upatras.gr
Search for other works by this author on:
C. S. Rekatsinas
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
D. A. Saravanos
Professor
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
e-mail: saravanos@mech.upatras.gr
Department of Mechanical
Engineering and Aeronautics,
University of Patras,
Rion-Patras GR-26500, Greece
e-mail: saravanos@mech.upatras.gr
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received August 7, 2016; final manuscript received December 20, 2016; published online April 13, 2017. Assoc. Editor: Michael Leamy.
J. Vib. Acoust. Jun 2017, 139(3): 031009 (14 pages)
Published Online: April 13, 2017
Article history
Received:
August 7, 2016
Revised:
December 20, 2016
Citation
Rekatsinas, C. S., and Saravanos, D. A. (April 13, 2017). "A Hermite Spline Layerwise Time Domain Spectral Finite Element for Guided Wave Prediction in Laminated Composite and Sandwich Plates." ASME. J. Vib. Acoust. June 2017; 139(3): 031009. https://doi.org/10.1115/1.4035702
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