Accession Number : ADA288523

Title :   Study of Damage Evolutions in Composite Plates Subjected to Bending Loads Using Micro-Macro Analysis.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Hamilton, Bruce H.

PDF Url : ADA288523

Report Date : SEP 1994

Pagination or Media Count : 62

Abstract : The purpose of this study is to develop a computer program that will predict the damage progression in composite plates subjected to bending loads. Kwon's micromechanical model is used to compute the smeared effective moduli from the material properties of fiber and matrix as well as to determine stresses at the constituent level. Failure criteria based on micro-stresses are then applied to determine the extent and type of damage that occur in the composite under various loading conditions. The progression of damage throughout the composite until complete failure of the composite can then be simulated using the current computer program. The numerical prediction for a laminated composite plate containing a hole and subjected to a bending load agrees well with the experimental data.

Descriptors :   *LAMINATES, *FIBER REINFORCED COMPOSITES, COMPUTERIZED SIMULATION, TENSILE STRENGTH, SPACECRAFT, AIRCRAFT, COMPOSITE MATERIALS, FINITE ELEMENT ANALYSIS, STIFFNESS, DAMAGE ASSESSMENT, THESES, COMPOSITE STRUCTURES, MATRIX MATERIALS, BENDING, CARBON, STRENGTH(MECHANICS), LOAD DISTRIBUTION, PLATES, AEROSPACE CRAFT, EPOXY COMPOSITES, FAILURE(MECHANICS), STRENGTH WEIGHT RATIO, AEROSPACE INDUSTRY, MICROMECHANICS, COMPRESSIVE STRENGTH.

Subject Categories : Laminates and Composite Materials
      Laminates and Composite Materials
      Unmanned Spacecraft
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE