Design Considerations for Materials with Negative Poisson’s Ratios

[+] Author and Article Information
R. S. Lakes

Departments of Mechanical Engineering and Biomedical Engineering, Center for Laser Science and Engineering, University of Iowa, Iowa City, IA 52242

J. Mech. Des 115(4), 696-700 (Dec 01, 1993) (5 pages) doi:10.1115/1.2919256 History: Received April 01, 1991; Revised May 01, 1992; Online June 02, 2008


This article presents a study of the implications of negative Poisson’s ratios in the design of components subjected to stress. When the Poisson’s ratio becomes negative, stress concentration factors are reduced in some situations and unchanged or increased in others. Stress decay according to Saint Venant’s principle can occur more or less rapidly as the Poisson’s ratio decreases. Several design examples are presented, including a core for a curved sandwich panel and a flexible impact buffer.

Copyright © 1993 by The American Society of Mechanical Engineers
Topics: Design
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