Abstract

This analysis investigates the micromechanical behavior of a fiber-reinforced composite. Two realistic deviations from the typical set of simplifying assumptions are considered: nonhomogeneous matrix properties and imperfect fiber/matrix bonds. The stress effects due to a soft matrix interlayer at the fiber interface and the loss of a portion of the fiber/matrix interface bond are examined. The analysis is performed with the ANSYS finite element program. The effects of higher order shape functions and different mesh densities are studied. The final results are compared to a previous analysis performed at Florida Technological University (now University of Central Florida) which utilized a less refined finite element mesh. The stress results along the fiber/matrix interface are presented as graphs of stress versus radial and axial position. In addition, the stress distributions throughout the fiber/matrix system are detailed with the aid of color stress contours. These results show that a significant decrease in fiber and matrix peak stresses accompanies the addition of a soft interlayer. On the other hand, the loss of the upper interface bond significantly increases the peak stresses. In both cases, the overall system stiffness is decreased.

Notes

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Graduation Date

1988

Semester

Summer

Advisor

Jenkins, David R.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Civil Engineering and Environmental Sciences

Format

PDF

Pages

207 p.

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0025775

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

Accessibility Status

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