Mixed models and reduced/selective integration displacement models for nonlinear shell analysisOne of the objectives of the present investigation is to identify classes of equivalent mixed models and reduced/selective integration displacement models for curved shell structures. A second objective is concerned with the identification of the spurious modes exhibited by various mixed models and their equivalent reduced integration displacement models. The merits of using mixed models are also evaluated. The mixed elements developed in the current investigation differ from those presented by Noor and Hartley (1977) by the fact that the stress resultants are discontinuous at interelement boundaries and, therefore, are eliminated on the element level. The high accuracy and effectiveness of the elements developed is demonstrated by means of numerical examples, taking into account three geometrically nonlinear problems of shallow shells.
Document ID
19820045434
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Noor, A. K. (George Washington University Hampton, VA, United States)
Andersen, C. M. (College of William and Mary Williamsburg, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Structural Mechanics
Meeting Information
Meeting: In: Nonlinear finite element analysis of plates and shells