Analysis of Welded Tubular Connections Using Continuum Damage Mechanics
Publication: Journal of Structural Engineering
Volume 118, Issue 3
Abstract
A new modeling technique for the ultimate strength analysis of welded tubular connections subjected to general loading is presented. Based upon the finite element method, the model includes shell and solid elements, large deformations, and elastoplasticity. Unlike other approaches, the ability to simulate the initiation and propagation of fracture is included through the application of continuum damage mechanics (CDM). With this method, cracking is predicted on the basis of a damage variable, and its effect is applied as a reduction in the element stiffness. The development of the material constants is described and numerical results are obtained for two tubular joints that exhibit fracture failure. A comparison between the computed failure loads and those observed experimentally shows a close correlation. With this approach, welded connections that are subjected to arbitrary loading can be efficiently evaluated for strength.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 118 • Issue 3 • March 1992
Pages: 828 - 845
Copyright
Copyright © 1992 ASCE.
History
Published online: Mar 1, 1992
Published in print: Mar 1992
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