Accession Number : ADA017683

Title :   Mechanics of Composite Materials with Different Moduli in Tension and Compression.

Descriptive Note : Interim rept.,

Corporate Author : SOUTHERN METHODIST UNIV DALLAS TEX DEPT OF CIVIL AND MECHANICAL ENGINEERING

Personal Author(s) : Jones,Robert M.

Report Date : JUL 1975

Pagination or Media Count : 41

Abstract : Composite materials have been used for several years in thermal protection systems such as reentry vehicle nosetips and heatshields as well as in more conventional aerospace structures such as laminated wings and stabilizers in the latest aircraft. Many composite materials, e.g., ATJ-S graphite, carbon/carbon, and graphite/epoxy, exhibit different strength and stiffness behavior in tension and compression. The moduli differences range from 20% for ATJ-S graphite to between 100% and 400% for carbon/carbon. The principal objective of the research is to analyze the behavior of solid bodies with different elastic moduli in tension and compression as well as the behavior of laminated plates and shells that have different elastic moduli in tension and compression and lamination asymmetries.

Descriptors :   *Composite materials, Modulus of elasticity, Stress analysis, Buckling, Vibration, Graphite, Shells(Structural forms), Laminates, Fiber reinforced composites, Epoxy resins, Carbon, Carbon fibers, Boron, Fiberglass, Reentry vehicles, Stiffness

Subject Categories : Laminates and Composite Materials
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE