Accession Number : ADA193046

Title :   Probabilistic Anisotropic Failure Criteria for Composite Materials.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Nelson, Kenneth J

PDF Url : ADA193046

Report Date : Dec 1987

Pagination or Media Count : 92

Abstract : A most important structural design objective today is the reliable applications of composite materials. Reliability is associated with the probability of success or failure of a particular structure and/or composite material. For this study, the reliability associated with strength was investigated. The objective was to develop a probabilistic anisotropic failure criterion and an analytical model which would account for the inherent strength scatter and enhance the structural reliability phase of composite design. This study analytically described the failure criterion and probabilistic failure states of a anisotropic composite in a combined stress state. Strength sensitivity and the failure mechanism within the domain of the combined stress space was based on a numerical simulation of a theoretical mathematical model. Keywords: Failure criterion, Failure envelope, Composite material, Probability.

Descriptors :   *ANISOTROPY, *COMPOSITE MATERIALS, MATHEMATICAL MODELS, FAILURE, FAILURE(MECHANICS), PROBABILITY, RELIABILITY, SENSITIVITY, STRENGTH(GENERAL), NUMERICAL ANALYSIS, SCATTERING, STRESSES, STRUCTURAL ENGINEERING, MODELS, THEORY

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE