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Transient Response in Cross-Ply Laminated Cylinders and Its Application to Reconstruction of Elastic Constants

X. Han1,2,3, G. R. Liu1,2, G. Y. Li 1
College of Mechanical and Automotive Engineering, Hunan Uni-versity, Changsha 410082 Hunan, P.R. China
Centre for Advanced Computations in Engineering Science(ACES) Department of Mechanical Engineering, National Univer-sity of Singapore 10 Kent Ridge Crescent, Singapore 119260
Tel/Fax: 65-68744795; Email:acehanxu@nus.edu.sg

Computers, Materials & Continua 2004, 1(1), 39-50. https://doi.org/10.3970/cmc.2004.001.039

Abstract

An efficient hybrid numerical method is presented for investigating transient response of cross-ply laminated axisymmetric cylinders subjected to an impact load. In this hybrid numerical method, the laminated cylinder is divided into layered cylindrical elements in the thickness direction. The Hamilton principle is used to develop governing equations of the structure. The displacement response is determined by employing the Fourier transformations and the modal analysis. Numerical examples for analyzing transient waves have been provided in axisymmetric laminated cylindrical structures, both for thin cylindrical shells and thick cylinders.
A computational inverse technique is also presented for reconstructing elastic constants of axisymmetric crossply laminated cylinders from the surface displacement response data, using the present hybrid numerical method as the forward solver and neural network as the inverse operator. This technique is utilized to reconstruct the elastic constants of an axisymmetric laminated cylindrical shell.

Keywords

Composite laminate, circular cylindrical structure, axisymmetric, material characterization, elastic wave, NDT, neural network.

Cite This Article

X. Han, . G. R. Liu and . G. Y. L. , "Transient response in cross-ply laminated cylinders and its application to reconstruction of elastic constants," Computers, Materials & Continua, vol. 1, no.1, pp. 39–50, 2004.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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