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RESEARCH PAPERS

An Element Independent Corotational Procedure for the Treatment of Large Rotations

[+] Author and Article Information
C. C. Rankin, F. A. Brogan

Applied Mechanics Laboratory, Lockheed Palo Alto Research Laboratory, Palo Alto, Calif. 94304

J. Pressure Vessel Technol 108(2), 165-174 (May 01, 1986) (10 pages) doi:10.1115/1.3264765 History: Received October 11, 1984; Revised May 07, 1985; Online November 05, 2009

Abstract

A new corotational procedure is developed which enables existing finite element formulations to be used in problems that contain arbitrarily large rotations. Through the use of a nonsingular large rotation vector, the contribution of the rigid body motion of the element to the total displacement field is removed before element computations are performed, with the result that almost any element can be easily upgraded to handle large rotations. This paper contains a derivation of the theory, an outline of the implementation into the STAGS code, and a demonstration of performance for problems involving large rotations and moderate strains.

Copyright © 1986 by ASME
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