NDLI: Optimization of composite sandwich cover panels subjected to compressive loadings (Document No: 19930021673)

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Optimization of composite sandwich cover panels subjected to compressive loadings (Document No: 19930021673)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Cruz, Juan R.
Copyright Year	1991
Description	An analysis and design method is presented for the design of composite sandwich cover panels that includes transverse shear effects and damage tolerance considerations. This method is incorporated into an optimization program called SANDOP (SANDwich OPtimization). SANDOP is used in the present study to design optimized composite sandwich cover panels for transport aircraft wing applications as a demonstration of its capabilities. The results of this design study indicate that optimized composite sandwich cover panels have approximately the same structural efficiency as stiffened composite cover panels designed to identical constraints. Results indicate that inplane stiffness requirements have a large effect on the weight of these composite sandwich cover panels at higher load levels. Increasing the maximum allowable strain and the upper percentage limit of the 0 degree and plus or minus 45 degree plies can yield significant weight savings. The results show that the structural efficiency of these optimized composite sandwich cover panels is relatively insensitive to changes in core density.
File Size	807089
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930021673
Archival Resource Key	ark:/13960/t15n1491q
Language	English
Publisher Date	1991-01-01
Access Restriction	Open
Subject Keyword	Composite Materials Panels Wings Compressibility Tolerances Mechanics Transport Aircraft Compression Loads Stiffness Composite Structures Damage Sandwich Structures Aircraft Structures Optimization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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