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RESEARCH PAPERS

Fiber Stabilization of Bent Cylinders, With an Application to Intervertebral Disks

[+] Author and Article Information
K. E. Schreiner

Norwegian College of Physical Education and Sport, Kringsjå, Oslo, Norway

J Biomech Eng 105(3), 294-295 (Aug 01, 1983) (2 pages) doi:10.1115/1.3138421 History: Received December 07, 1982; Revised March 25, 1983; Online June 15, 2009

Abstract

Fibers cannot carry compression, and reinforcing fibers in a cylinder can only carry load if they are kept taut by the deformations of the cylinder. In the present study it is found that in pure bending, deformations that change the pitch, i.e., the angle between the fibers and the cross-sectional plane, towards 30 deg will slacken the fibers. With an initial pitch different than 30 deg, fibers in one half of the cross section will then be slackened by bending, and this half of the cylinder becomes unstable. Applied to the mechanics of the intervertebral disks, this may help explain mechanisms leading to nucleus prolaps.

Copyright © 1983 by ASME
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