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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41259

Title: Viscoelastic analysis of creep response for uniaxially-compressed laminates with initial deflection including the effect of physical aging
Authors: Nan-nong Huang
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Date: 1998-05
Issue Date: 2017-02-13T03:10:54Z
Publisher: International Journal of Solids and Structures
Abstract: Abstract:The viscoelastic behavior of simply-supported, cross-ply and angle-ply laminated plates with a physical aging phenomenon is examined. The laminates considered are under uniaxial inplane compression and have various amplitudes of initial imperfection. The analysis is based on a geometrically nonlinear viscoelastic formulation. The effective time theory is employed to construct the stress-strain relations. By assuming every component of relaxation moduli in each lamina has the same aging shift rate, the analysis is conducted on the effective time scale. The stress function is obtained by solving the compatibility equation by the use of the Laplace transform and a numerical integration scheme. Deflection is calculated from the moment equation by the Galerkin method in conjunction with the numerical integration. Numerical results for deflection history and edge shortening for the glass-reinforced vinyl ester laminates are presented. The effects of the physical aging, the pre-loading aging time, the amplitude of imperfection, the magnitude of loading, and the coupling relaxation moduli on the creep responses are illustrated in the numerical examples. Solutions based on the quasi-elastic approach are also presented for comparison.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41259
Appears in Collections:[機械與機電工程學系] 期刊論文

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