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Bending and stretching finite element analysis of anisotropic viscoelastic composite platesFinite element algorithms have been developed to analyze linear anisotropic viscoelastic plates, with or without holes, subjected to mechanical (bending, tension), temperature, and hygrothermal loadings. The analysis is based on Laplace transforms rather than direct time integrations in order to improve the accuracy of the results and save on extensive computational time and storage. The time dependent displacement fields in the transverse direction for the cross ply and angle ply laminates are calculated and the stacking sequence effects of the laminates are discussed in detail. Creep responses for the plates with or without a circular hole are also studied. The numerical results compare favorably with analytical solutions, i.e. within 1.8 percent for bending and 10(exp -3) 3 percent for tension. The tension results of the present method are compared with those using the direct time integration scheme.
Document ID
19940004730
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hilton, Harry H.
(Illinois Univ. Urbana-Champaign, IL, United States)
Yi, Sung
(Illinois Univ. Urbana-Champaign, IL, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1990
Publication Information
Publication: NASA. Langley Research Center, The Third Air Force(NASA Symposium on Recent Advances in Multidisciplinary Analysis and Optimization
Subject Category
Composite Materials
Accession Number
94N71485
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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