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Optimal cure cycle design of a resin-fiber composite laminateA unified computed aided design method was studied for the cure cycle design that incorporates an optimal design technique with the analytical model of a composite cure process. The preliminary results of using this proposed method for optimal cure cycle design are reported and discussed. The cure process of interest is the compression molding of a polyester which is described by a diffusion reaction system. The finite element method is employed to convert the initial boundary value problem into a set of first order differential equations which are solved simultaneously by the DE program. The equations for thermal design sensitivities are derived by using the direct differentiation method and are solved by the DE program. A recursive quadratic programming algorithm with an active set strategy called a linearization method is used to optimally design the cure cycle, subjected to the given design performance requirements. The difficulty of casting the cure cycle design process into a proper mathematical form is recognized. Various optimal design problems are formulated to address theses aspects. The optimal solutions of these formulations are compared and discussed.
Document ID
19870016716
Document Type
Contractor Report (CR)
Authors
Hou, Jean W. (Old Dominion Univ. Norfolk, VA, United States)
Sheen, Jeenson (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1987
Subject Category
COMPOSITE MATERIALS
Report/Patent Number
NAS 1.26:181067
NASA-CR-181067
Funding Number(s)
CONTRACT_GRANT: NAG1-561
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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