SYMPOSIA PAPER Published: 01 January 1981
STP29307S

A Comparative Study of Composite Shear Specimens Using the Finite-Element Method

Source

Four specimens for the in-plane shear behavior of fibrous composites are analyzed for elastic stress distributions. Rigid and elastic fixtures as well as mechanical and thermal loading are considered. Results are presented in the form of stress contours, stress profiles, and stress concentrations for [0], [0/90]s and [0/±45/90]s laminates. It is shown that the assumption of rigid-fixture rail shear specimens predicts regions of uniform pure shear, but that the inclusion of elastic fixture effects introduces normal stresses in the test section. These results also indicate that the shear stress in the test section may differ from the average value by as much as 10 percent, depending upon laminate configuration. Results are also presented for slotted coupon, crossbeam, and a double V-notched specimen.

Author Information

Herakovich, CT
Virginia Polytechnic Institute, and State University, Blacksburg, Va.
Bergner, HW
Virginia Polytechnic Institute, and State University, Blacksburg, Va.
Bowles, DE
Virginia Polytechnic Institute, and State University, Blacksburg, Va.
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Details
Developed by Committee: D30
Pages: 129–151
DOI: 10.1520/STP29307S
ISBN-EB: 978-0-8031-4800-0
ISBN-13: 978-0-8031-0700-7