Wavelet spectral finite element modeling for wave propagation in adhesively bonded composite joints

Samaratunga, D and Jha, R and Gopalakrishnan, S and Messac, A (2015) Wavelet spectral finite element modeling for wave propagation in adhesively bonded composite joints. In: 23rd AIAA/AHS Adaptive Structures Conference, 5-9 January 2015, Kissimmee, Florida.

PDF AIAA_AHS_ADA_STR_CON_13P_2015.pdf - Published Version Restricted to Registered users only Download (461kB) | Request a copy

Abstract

Transient dynamics and wave propagation across adhesively bonded lap joints are studied using the wavelet spectral finite element (WSFE) method. The adherands are considered as shear deformable plates with five degrees of freedom describing in-plane and out-of-plane displacements. Partial differential equations, governing the wave motion of adherands, are derived using Hamilton�s principle. The adhesive layer is assumed to be a linearly distributed shear and transverse normal springs. The governing PDEs are coupled due to the presence of the adhesive layer, making it very complex to solve. The WSFE method is used for solving the differential equations. In WSFE, time and one spatial dimension are approximated using Daubechies scaling functions, reducing the PDEs to ODEs which are functions of one spatial dimension only. The ODEs are solved exactly by assuming a harmonic solution in the transformed frequency-wavenumber domain. The solution is validated with conventional finite element simulations performed using the commercial software ABAQUS. Additional examples are provided to demonstrate the utility of the model in order to understand complex the wave propagation mechanism through bonded lap joints. © 2015, by the American Institute.

Item Type:	Conference Paper
Publication:	23rd AIAA/AHS Adaptive Structures Conference
Publisher:	American Institute of Aeronautics and Astronautics Inc.
Additional Information:	cited By 3; Conference of 23nd AIAA/AHS Adaptive Structures Conference 2015 ; Conference Date: 5 January 2015 Through 9 January 2015; Conference Code:112959
Keywords:	ABAQUS; Adhesives; Degrees of freedom (mechanics); Joints (structural components); Ordinary differential equations; Wave propagation; Wavelet analysis, Adhesively bonded composite joints; Adhesively bonded lap joint; Finite element simulations; Frequency-wavenumber domains; Out-of-plane displacement; Propagation mechanism; Shear deformable plate; Spectral finite elements, Finite element method
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	15 Oct 2020 09:57
Last Modified:	15 Oct 2020 09:57
URI:	http://eprints.iisc.ac.in/id/eprint/65788

Actions (login required)

View Item