A finite element method by Roddeman was modified in order to study wrinkling of polymer membranes due to mechanical loads and thermal shrinkage. Thermal shrinkage was incorporated as a prestrain and the elastic modulus was allowed to be dependent on temperature. The following wrinkling cases were studied: (1) a circular membrane with a heated spot at the center and a uniform radial displacement at the outer edge, (2) a rectangular membrane with wrinkles emanating from an imperfection in the boundary, and (3) a rectangular membrane with wrinkles emanating from a heated spot at the center.

Issue Section:
Research Papers
Topics:
Membranes, Polymers, Shrinkage (Materials), Displacement, Elastic moduli, Finite element methods, Stress, Temperature
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Copyright © 1994
 by The American Society of Mechanical Engineers
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