The worksheet presents some thoughts about the plane strain problem of the viscous orthotropic composite materials cylinder under internal and external pressure with respect to using the direct method. To compute the interior stress, from the elastic solution we use the correspondence principle and the inverse Laplace transform.

NOTE: This worksheet demonstrates Maple's capabilities in researching the numerical and graphical solution of the relaxation function problem of an orthotropic cylinder. All rights reserved. Copying or transmitting of this material without the permission of the authors is not allowed.