Nonlinear Thermo-Viscoelastic Analysis of Interlaminar Stresses in Laminated Composites

[+] Author and Article Information
Sung Yi, H. H. Hilton, M. F. Ahmad

Aeronautical and Astronautical Engineering Department, National Center for Supercomputing Applications and Theoretical and Applied Mechanics Department, University of Illinois at Urbana-Champaign, Urbana, IL 61801-2935

J. Appl. Mech 63(1), 218-224 (Mar 01, 1996) (7 pages) doi:10.1115/1.2787201 History: Received May 05, 1994; Revised October 31, 1994; Online October 26, 2007


A finite element formulation for analyzing interlaminar stress fields in nonlinear anisotropic viscoelastic laminated composites is presented including a hygrothermal formulation. Schapery’s single integral formulation is extended to account for viscoelastic anisotropy and multiaxial stress states. Numerical results obtained from the present formulation are compared against experimental data and excellent agreement is obtained between these results. As illustrative examples, inplane and interlaminar stresses for (45/-45)s T300/5208 laminate are also presented.

Copyright © 1996 by The American Society of Mechanical Engineers
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