Accession Number : ADA305040

Title :   Analysis/Design of Strip Reinforced Random Composites (Strip Hybrids).

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Chamis, C. C. ; Sinclair, J. H.

PDF Url : ADA305040

Report Date : 15 DEC 1978

Pagination or Media Count : 23

Abstract : Results are described which were obtained by applying advanced analysis methods and composite mechanics to a strip-reinforced random composite square panel with fixed ends. This was done in order to illustrate the use of these methods for the apriori assessment of the composite panel when subjected to complex loading conditions. The panel was assumed to be of E-Glass/Random Composite. The strips were assumed to be of three advanced unidirectional composites to cover a range of low, intermediate, and high modulus stiffness. The panels were assumed to be subjected to complex loadings to assess their adequacy as load carrying members in auto body, aircraft engine nacelle, and windmill blade applications. The results show that strip hybrid panels can be several times more structurally efficient than the random composite base materials. Some of the results are presented in graphical form and procedures are described for use of these graphs as guides for preliminary design of strip hybrids. (MM)

Descriptors :   *REINFORCING MATERIALS, LOAD DISTRIBUTION, AIRCRAFT ENGINES, COMPOSITE MATERIALS, FINITE ELEMENT ANALYSIS, PANELS, STIFFNESS, COMPOSITE STRUCTURES, GRAPHITE, GLASS, BLADES, BUCKLING, AERODYNAMIC CHARACTERISTICS, HYBRID SYSTEMS, PASSENGER VEHICLES, UNIDIRECTIONAL, POLYIMIDE PLASTICS, NACELLES, WIND MACHINES, POLYIMIDE RESINS, VIBRATIONAL SPECTRA.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE