Accession Number:

ADA496972

Title:

Study of Load Transfer and Fracture on Composite-to-Metal-Wire Joints

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

2009-03-01

Pagination or Media Count:

60.0

Abstract:

In order to connect a composite structure to a metallic structure, a hybrid compositemetal-wire laminate has been considered. Such a hybrid laminate raises a question of interface strength between the composite layer and metal-wire layer, and what kind of lay-up configuration would be the best. In order to answer the question, the following three joints were considered butt joint, overlap joint, and modified-wire-end-shape joint. The goal of this research was to numerically determine which joint would be the strongest based on its components of fracture toughness under various loading conditions such as tension, shear and bending. A defect was included between and parallel to the interfaces to simulate a crack in the critical regions of the models. The crack growth, due to interlaminar tension andor sliding, is analyzed using the crack closure technique. Finite element formulations in this research are carried out by using ANSYS finite element software.

Subject Categories:

  • Properties of Metals and Alloys
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE