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Buckling and vibration analysis of laminated panels using VICONOPT

Kennedy, David, Williams, Fred Ward and Anderson, Melvin S. 1994. Buckling and vibration analysis of laminated panels using VICONOPT. Journal of Aerospace Engineering 7 (3) , pp. 245-262. 10.1061/(ASCE)0893-1321(1994)7:3(245)

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Abstract

The analysis aspects of the 23,000‐line FORTRAN program VICONOPT are described. Overall stiffness matrices assembled from the earlier exact VIPASA flat plate stiffnesses are optionally coupled by Lagrangian multipliers to find critical buckling loads, or natural frequencies of undamped vibration, of prismatic assemblies of anisotropic flat plates with arbitrarily located point supports or simple transverse supporting frames. The longitudinal continuity of typical wing and fuselage panels is closely approximated because the solutions are for the infinitely long structure obtained by repeating a bay and its supports longitudinally. Any longitudinally invariant in‐plane plate stresses are permitted, and very rapid solutions are guaranteed by numerous refinements, including multilevel substructuring and a method for repetitive cross sections that is exact for regular polygons used to represent cylinders. Modal displacements and stresses in or between plies of laminated plates are calculated and plotted, with values being recovered at all nodes of substructures. Comparison with usual approximate finite‐element methods confirms that, for comparably converged solutions, VICONOPT is typically between 100 and 104 times faster.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Computer applications, Buckling, Vibration, Computer analysis, Plates, Stiffness
Additional Information: Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0893-1321/ (accessed 25/02/2014)
Publisher: ASCE
ISSN: 0893-1321
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 05:05
URI: http://orca.cf.ac.uk/id/eprint/48258

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