Date of Award

Spring 1995

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical & Aerospace Engineering

Program/Concentration

Aerospace Engineering

Committee Director

Norman F. Knight, Jr.

Committee Member

Mohammad A. Anminpour

Committee Member

Chuh Mei

Call Number for Print

Special Collections; LD4331.E535C37

Abstract

An assumed-stress hybrid 2-node beam element is formulated using the Hellinger-Reissner variational principle. Independent approximations are made for the stresses and displacements. The stress field is assumed to be consistent with the force and moment equilibrium equations. The displacement field is assumed to be linear except that the transverse deflections vary quadratically using the rotational freedoms, The element is implemented in COMET and coupled with its corotational utilities. This enables an analyst to extend the element to problems involving geometric nonlinearities. Excellent performance of the element for nonlinear behaviors of both a stiffening and softening behavior is demonstrated.

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DOI

10.25777/jgpd-z777

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