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TECHNICAL PAPERS

Automated Assessment of Ultimate Hull Girder Strength

[+] Author and Article Information
M. J. Smith, N. G. Pegg

Defence R&D Canada - Atlantic, Dartmouth, Nova Scotia

J. Offshore Mech. Arct. Eng 125(3), 211-218 (Jul 11, 2003) (8 pages) doi:10.1115/1.1577358 History: Received June 01, 2001; Revised July 01, 2002; Online July 11, 2003
Copyright © 2003 by ASME
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References

Caldwell,  J. B., 1965, “Ultimate Longitudinal Strength,” Transactions of RINA, 107, pp. 411–430.
Smith, C. S., 1977, “Influence of Local Compression Failure on Ultimate Longitudinal Strength of a Ship’s Hull,” Proc. PRADS, International Symposium on Practical Design in Shipbuilding, Tokyo, Japan, pp. 73–79.
Chen,  Y-K., Kutt,  L. M., Piaszczyk,  C. M., and Bieniek,  M. P., 1983, “Ultimate Strength of Ship Structures,” SNAME Transactions, 91, pp. 149–168.
Ueda, Y., and Rashed, S. M. H., 1991, “Advances in the Application of ISUM to Marine Structures,” Advances in Marine Structures—2, C. Smith and R. S. Dow, eds. Elsevier, London, pp. 628–649.
Pegg, N. G., and Cox, P., 1985, “ULTMAT—A Program for Predicting the Ultimate Strength of Ship Cross Sections,” DREA Technical Communication 85/313, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Dow, R. S., Hugill, R. C., Clark, J. D., and Smith, C. S., 1981, “Evaluation of Ultimate Ship Hull Strength,” Proc. Extreme Loads Response Symposium, Society of Naval Architects and Marine Engineers, pp. 133–147.
Smith,  C. S., Anderson,  N., Chapman,  J. C., Davidson,  P. C., and Dowling,  P. J., 1992, “Strength of Stiffened Plating Under Combined Compression and Lateral Pressure,” Transactions of RINA, 134, pp. 131–147.
Smith, M. J., and Pegg, N. G., 2000, “Automated Assessment of Ultimate Longitudinal Strength of Ship Hulls,” DREA Technical Memorandum TM 2000-143, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
DSA-GP Graphics System, User’s Manual, 1996, Martec Limited, Halifax, Nova Scotia.
Pegg, N. G., 1999, “Development of the ISSMM Software Tool for Residual Strength Assessment of Ship Structures,” DREA Technical Memorandum TM 1999-055, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Adamchak, J. C., 1984, “An Approximate Method for Estimating the Collapse of a Ship’s Hull in Preliminary Design,” Ship Structure Symposium ’84, Society of Naval Architects and Marine Engineers, pp. 37–61.
Gordo,  J. M., Guedes Soares,  C., and Faulkner,  D., 1996, “Approximate Assessment of the Ultimate Longitudinal Strength of the Hull Girder,” J. Ship Res., 40, pp. 60–69.
Chen, Q., Zimmerman, T. J. E., DeGeer, D. D., and Kennedy, B. W., 1997, “Strength and Stability of Stiffened Panel Components,” Ship Structures Committee Report SSC-399.
Jiang, L., and Chernuka M. W., 2000, “Improved Nonlinear Solution Techniques in the VAST Finite Element Program,” DREA Contractor Report CR 2000-101, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Jiang, L., and Chernuka, M., 2000, “Incorporation of UK NS94 Ultimate Strength Analysis in MGDSA, Part I: Engineering Considerations,” DREA Contractor Report CR 2000-112, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Lichodzijewski, M., and Jiang, L., 2000. “Incorporation of UK NS94 Ultimate Strength Analysis in MGDSA, Part II: Software Considerations,” DREA Contractor Report CR 2000-113, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Lichodzijewski, M., and MacAdam, T., 2000. “Ultimate Strength Application Version 1.0 User’s Manual,” DREA Contractor Report CR 2000-114, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
MAESTRO—Method for Analysis Evaluation and Structural Optimization, Version 7.1.1 User’s Manual, 1996, Proteus Engineering, Stevensville, MD.
Smith, M. J., 2001. “Progressive Collapse Method for Ultimate Hull Girder Strength Assessment,” DREA Technical Memorandum TM 2001-145, Defence Research Establishment Atlantic, Dartmouth, Nova Scotia.
Dow, R. S., 1997, Private Communication.
VAST—Vibration and Strength Analysis, Version 7.2 User’s Manual, 1997, Martec Limited, Halifax, Nova Scotia.
ASAS-NL. Version 2.0 User’s Manual (Update 4), 1998. WS Atkins Engineering Software, Epsom, Surrey, UK.

Figures

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Three structural unit types
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Load-shortening curves showing effect of geometric imperfections
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Load-shortening curves showing effect of residual stresses
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Orientation, neutral axes positions, and direction of loading
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Interaction curve and trace lines obtained with bi-axial moment-curvature
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Interaction curve and trace lines obtained with bi-axial strength analysis
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Defining a cross-section in the global model
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Finite element model of main deck stiffened panel
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ULTSAS plot of component limit states
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HALIFAX class hull section, with damage region indicated
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Normalized ultimate strength interaction curve for explosion damage test case
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Moment-curvature plot for explosion damage test case
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Cross section with collision damage region indicated
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Normalized interaction curve for collision damage test case
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Moment-curvature plot for collision damage test case

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