Agreement between measured response of an offshore structure and numerical predictions using an initial finite element model (IFEM) is in general poor. An algorithm is developed, which produces an updated finite element model (UFEM) that is fully correlated with respect to modal and static deflection measurements. An incremental nonlinear methodology based on large admissible perturbations in cognate space is used to produce the UFEM by postprocessing results of the initial FEA. No other FEA or trial and error are required. Iterations within each increment are used only to correct for dependence of hydrodynamic excitation on correlation variables. The UFEM corresponds to a real structure and may differ from the IFEM in response and correlation variables by 100–300 percent depending on correlation measures and structural size. Several numerical applications for three offshore structures are used to assess the strength, limitations, and cost of the large perturbation methodology.
Skip Nav Destination
Article navigation
August 1992
Research Papers
Finite Element Model Correlation for Offshore Structures
R. L. Tawekal,
R. L. Tawekal
Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109-2145
Search for other works by this author on:
M. M. Bernitsas
M. M. Bernitsas
Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109-2145
Search for other works by this author on:
R. L. Tawekal
Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109-2145
M. M. Bernitsas
Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109-2145
J. Offshore Mech. Arct. Eng. Aug 1992, 114(3): 154-164 (11 pages)
Published Online: August 1, 1992
Article history
Received:
September 30, 1991
Revised:
March 12, 1992
Online:
June 12, 2008
Citation
Tawekal, R. L., and Bernitsas, M. M. (August 1, 1992). "Finite Element Model Correlation for Offshore Structures." ASME. J. Offshore Mech. Arct. Eng. August 1992; 114(3): 154–164. https://doi.org/10.1115/1.2919967
Download citation file:
Get Email Alerts
Cited By
Numerical Modeling of Fish Cage Structural Responses in Regular and Irregular Waves Using Modified XPBD
J. Offshore Mech. Arct. Eng (April 2025)
Layout Optimization of Wave Energy Park Based on Multi-Objective Optimization Algorithm
J. Offshore Mech. Arct. Eng (August 2025)
Effects of Aerodynamic Damping and Gyroscopic Moments on Dynamic Responses of a Semi-Submersible Floating Vertical Axis Wind Turbine: An Experimental Study
J. Offshore Mech. Arct. Eng (April 2025)
Investigating the Impact of System Parameters on Flow-Induced Vibration Hard Galloping Based on Deep Neural Network
J. Offshore Mech. Arct. Eng (August 2025)
Related Articles
Large-Amplitude Oscillations of Geometrically Nonlinear Elastic Beams Subjected to Hydrodynamic Excitation
J. Offshore Mech. Arct. Eng (May,1991)
Peak Response Statistics of Vertical Cylinders in Two-Dimensional
Irregular Waves
J. Offshore Mech. Arct. Eng (November,1996)
Prediction of Form Errors in Rings of Nonuniform Cross Section Due to Workholding and Machining Loads
J. Manuf. Sci. Eng (December,2008)
Process Induced Stresses of a Flip-Chip Packaging by Sequential Processing Modeling Technique
J. Electron. Packag (September,1998)
Related Proceedings Papers
Related Chapters
ISO 19901-1 Petroleum and Natural Gas Industries — Specific Requirements for Offshore Structures — Part 1: Metocean Design and Operating Considerations
Ageing and Life Extension of Offshore Facilities
List of Commercial Codes
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow
Data Tabulations
Structural Shear Joints: Analyses, Properties and Design for Repeat Loading