Size effect in penetration of sea ice plate with part-through cracks. II: Results

Zdeněk P. Bažant, Jang Jay H. Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1316-1324
Number of pages9
JournalJournal of Engineering Mechanics
Volume124
Issue number12
DOIs
Publication statusPublished - 1998 Jan 1

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Sea ice
Nonlinear equations
Plasticity
Loads (forces)
Cracks

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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Size effect in penetration of sea ice plate with part-through cracks. II : Results. / Bažant, Zdeněk P.; Kim, Jang Jay H.

In: Journal of Engineering Mechanics, Vol. 124, No. 12, 01.01.1998, p. 1316-1324.

Research output: Contribution to journalArticle

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