An Analytic Method for Predicting the Flow and Fracture in Notched Fiber Composite Materials.
Abstract
An analytical system was developed for the prediction of the onset and progress of plastic flow, and for the fracture of, oriented fiber composite materials in which both externally applied complex stress states (both biaxial and triaxial) and stress raisers were present. The accuracy of the analytical system was demonstrated by the agreement between analytically predicted and experimentally measured flow values of externally notched tungsten wire reinforced copper composites, in which the fiber fraction was 50% by volume. The predictive system was a unique combination of two numerical analysis systems. First the stresses in the notched composite bars were analyzed by the SAAS II program; these stresses were then used as input parameters for a finite element micromechanics program. By applying a yield criterion to the stresses computed by the micromechanics program, it was possible to predict the yielding stresses of the notched composite bars.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1975
- Accession Number
- ADA015182
Entities
People
- Lynn J. Ebert
- Paul L. Flynn
Organizations
- Case Western Reserve University