Size Effect in Penetration of Sea Ice Plate with Part-Through Cracks. II: Results
Publication: Journal of Engineering Mechanics
Volume 124, Issue 12
Abstract
After development of the theory in the part I paper, systems of up to 300 nonlinear equations are solved in this paper by the Levenberg-Marquardt optimization algorithm. The maximum load is reached when the circumferential cracks begin to form. Numerical calculations show a typical quasi brittle size effect such that the plot of log σN versus log h (where αN= nominal stress at maximum load and h= plate thickness) is a descending curve whose slope is negligible only for h< 0.2 m and then gets gradually steeper, asymptotically approaching −1/2. The calculated size effect agrees with the existing test data, and contradicts previous plasticity solutions.
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Information
Published In
Journal of Engineering Mechanics
Volume 124 • Issue 12 • December 1998
Pages: 1316 - 1324
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Dec 1, 1998
Published in print: Dec 1998
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