Accession Number : ADA289258

Title :   Investigation into the Behavior of Geometrically Nonlinear Composite Arches.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Bailey, John C.

PDF Url : ADA289258

Report Date : DEC 1994

Pagination or Media Count : 110

Abstract : This research modifies the existing finite element formulation of a potential energy based large deformation and moderate rotation theory. Hermitian shape functions replace the existing linear bending angle interpolations. Negligible differences between the two formulations indicate the underlying kinematics limit the accuracy, not the finite element interpolations. Using the new program, numerous nonlinear arch geometries are modeled to investigate the effects of arc length and thickness variations. Local and global snapping phenomena are captured as well as through the thickness shear driven nonlinearities.

Descriptors :   *SPACECRAFT, *COMPOSITE MATERIALS, *COMPOSITE STRUCTURES, *ARCHES, KINEMATICS, COMPUTER PROGRAMS, STRESS ANALYSIS, LAMINATES, FINITE ELEMENT ANALYSIS, BEAMS(STRUCTURAL), DEFORMATION, STIFFNESS, DISPLACEMENT, FIBER REINFORCED COMPOSITES, ELASTIC PROPERTIES, THESES, STRAIN(MECHANICS), BENDING, SHELLS(STRUCTURAL FORMS), LOAD DISTRIBUTION, FORTRAN, PLATES, ROTATION, HINGES, LAGRANGIAN FUNCTIONS.

Subject Categories : Laminates and Composite Materials
      Structural Engineering and Building Technology
      Unmanned Spacecraft
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE