More Recent Papers

Sweetman, B., and Wang, L. "The Momentum Cloud Method for Dynamic Simulation of Rigid Body Systems" ASCE Journal of Engineering Mechanics, 140(2), 257-267, February 2014.
Full text available at http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000634
Final Manuscript: PDF

Wang, L. and Sweetman, B., "Multibody Dynamics of Floating Wind Turbines with Large-Amplitude Motion" Applied Ocean Research, Vol 43, Pages 1-10, October 2013.
Available Formats: PDF

Wang, L. and Sweetman, B., "Simulation of Large-Amplitude Motion of Floating Wind Turbines using Conservation of Momentum" Ocean Engineering, Volume 42, Pg 155-164, March 2012.
Available Formats: PDF

Sweetman, B. and Wang, L., "Floating Offshore Wind Turbine Dynamics: Large-Angle Motions in Euler-Space" Journal of Offshore Mechanics and Arctic Engineering, OMAE-10-1056, 134(3), August 2012.
Available Formats: PDF Downlad .tar file of Associated Matlab source code

Swartz, Andrew, Lynch, Jerome P., Choi, Meunkeun, Zerbst, Stephen M., and Sweetman, Bert and Rolfes, Raimond, "Structural Monitoring of Wind Turbines using Wireless Sensor Networks" Smart Structures and Systems, April 2010, Volume 6, Issue 3.
Available Formats: PDF

Choi, M. and Sweetman, B., "The Hermite Moment Model for Highly Skewed Response with Application to Tension Leg Platforms" Journal of Offshore Mechanics and Arctic Engineering, May 2010, Volume 132, Issue 2.
Available Formats: PDF
Download Associated Software

Sweetman, B and Choi, M., "The Modal Distribution Method for Statistical Analysis of Measured Structural Response" Journal of Probabilistic Engineering Mechanics, April 2010, Volume 25, Issue 2, Pages 218-227.
Available Formats: PDF

Choi, M. and Sweetman, B., "Efficient Calculation of Statistical Moments for Structural Health Monitoring" Journal of Structural Health Monitoring, January 1, 2010, Vol. 9, No.~1, 13-24.
Available Formats: PDF

Mittendorf, Kim, Sweetman, Bert and Zielke, Werner. "Wave Climate Hindcast for the Design of Offshore Wind Energy Structures in the German Bight" International Journal of Ecology & Development, IJED Special Issue on the Coastal Environment. 2007.
Available Formats: PDF

Sweetman, Bert "Practical Airgap Prediction for Offshore Structures." ASME Journal of Offshore Mechanics and Arctic Engineering, Volume 126, Issue 2, Pages 147-155, May 2004.
Available Formats (final MS): Postscript PDF Author Proof (PDF)

Sweetman, Bert and Winterstein, Steven R. "Non-Gaussian Airgap Response Models for Floating Structures" ASCE Journal of Engineering Mechanics, Volume 129, Issue 3, Pages 302-309, March 2003.
Available Formats (final MS): Postscript PDF

Sweetman, Bert, Winterstein, Steven R., and Meling, Trond Stokka "Airgap Prediction from Second-Order Diffraction and Stokes Theory" International Journal of Offshore and Polar Engineering, Volume 12, Number 3, September 2002
Available Formats: Postscript PDF

Sweetman, Bert, Winterstein, Steven R., and Cornell, C. Allin "Air Gap Analysis of Floating Structures: First- and Second-Order Transfer Functions from System Identification" Elsevier Journal of Applied Ocean Research Volume 24, Issue 2, Pages 107-118, April 2002
Available Formats: PDF

Winterstein, Steven R., and Sweetman, Bert "Air Gap Response of Floating Structures: Statistical Predictions vs Observed Behavior" Journal of Offshore Mechanics and Arctic Engineering, Vol 123, Page 118-123, August 2001.
Available Formats: Postscript PDF

Manuel, Lance, Sweetman, Bert, and Winterstein, Steven R., "Analytical Predictions of the Air Gap Response of Floating Structures," Journal of Offshore Mechanics and Arctic Engineering, Vol 123, Page 112-117, August 2001.
Available Formats: PDF Postscript Word

Manuel, Lance, Veers, Paul S. and Winterstein, Steven R. "Parametric Models for Estimating Wind Turbine Fatigue Loads for Design" Journal of Solar Engineering,
Available Formats: PDF Postscript

Sweetman, Bert and Winterstein, Steven R. "Non-Gaussian Air Gap Response Models for Floating Structures" Oral Presentation Only, OMAE 2000, Paper No. OMAE ETCE/OMAE2000-6144, New Orleans, Louisiana, February, 2000
Available Formats: Postscript PDF

Jha, Alok, Winterstein, Steven R., "Nonlinear Random Ocean Waves: Prediction and Comparison with Data" OMAE 00, Paper No. OMAE 00-6125, New Orleans, Louisiana, February 2000
Available Formats: PDF

Winterstein, Steven R., Jha, Alok K., and Kumar, Satyendra "Reliability of Floating Structures: Extreme Response and Load Factor Design" Journal of Waterway, Port and Coastal Engineering, ASCE, July/August, 1999
Available Formats: Postscript PDF

Winterstein, S.R., 1987. "Moment-based Hermite Nodels of Random Vibration'' Afdelingen for Baerende Konstruktioner, Danmarks Tekniske Holjskole, Lyngby, ISBN 87-87336-78-2
Available Formats: PDF (scanned)

Conference Procedings    

Sweetman, B., and Wilder, B. "Numerical Simulation of Floating Offshore Wind Turbines Including Aero-Elasticity and Active Blade Pitch Control" Offshore Technology Conference, 2014, OTC 23597.
Available Formats: PDF

Wang, L. and Sweetman, B "Conceptual Design of Floating Wind Turbines with Large Amplitude Motion'' SNAME Annual Meeting, Houston, 2011.
Available Formats: PDF

Sweetman, B and Wang, L. "Large-Angle Rigid Body Dynamics of a Floating Offshore Wind Turbine using Euler's Equations of Motion'' NSF CMMI Engineering Research and Innovation Conference, Atlanta, 2011.
Available Formats: PDF

Sweetman, B and Wang, L. "Free Vibration of a Floating Offshore Wind Turbine Support Structure including Gyroscopic Effects'' NSF CMMI Engineering Research and Innovation Conference, Honolulu, 2009.

Swartz, R.A., Lynch, J.P., Sweetman, B., Rolfes, R. and Zerbst, S. "Structural Monitoring of Wind Turbines using Wireless Sensor Networks" Proceedings of the ESF-NSF Workshop on Sensor Networks for Civil Infrastructure Systems, Cambridge, 2008
Available Formats: PDF

Mittendorf, K. and Sweetman, B. "Loading and Response of Offshore Wind Turbine Support Structures: Prediction with Comparison to Measured Data" ASCE Structures Congress, Vancouver, 2008.
Available Formats: PDF

Sweetman, Bert and Choi, Myoungkeun "The Modal Distribution Method: A New Statistical Algorithm for Analyzing Measured Data" Proceedings of SPIE, Volume 6174, Page 61742H-1, San Diego, California, USA, February-March 2006.
Available Formats: PDF

Choi, Myoungkeun, Sweetman, Bert "Prediction and Application of wave kinematics for near-shore structures subject to irregular seas with comparison to measured field data" Proceedings of the Society of Naval Architects of Korea (SNAK) Conference, Volume 40 Number 2, Seoul, Korea, May 2005.
Available Formats: PDF

Fitzwater, LeRoy M. and Winterstein, Steven R. "Predicting the Long-Term Distribution of Extreme Loads from Limited Data: Comparing Full-Integration and First-Order Reliability Methods", Abstract Submitted for Review, Annual Wind Energy Symposium, Reno, NV, January 2002
Available Formats: PDF

Veers, Paul S., Manuel, Lance, Fitzwater, LeRoy, and Winterstein, Steven R. "Moment-Based Fatigue Load Models for Wind Energy Systems" ICOSSAR–2001, California
Available Formats: WORD

Sweetman, Bert, Winterstein, Steven R., Meling, Trond Stokka, and Birknes, Joern "Airgap Prediction: Use of Second-Order Diffraction and Multi-Column Models" ISOPE 2001, Paper No. 2001-IL-13, Stavanger, Norway, June 17-22, 2001
Available Formats: Postscript PDF

Teigen, Per, Neidzwecki, John M., and Winterstein, Steven R., "Wave Interaction Effects for Non-Compliant TLP" ISOPE 2001, Stavanger, Norway, June 17-22, 2001
Available Formats: Postscript PDF

Kashef, T., Torhaug, R., and Winterstein, Steven R., "Quantifying Uncertainty due to Imperfect Force Prediction Models: A General Methodology with Applications to Fluid Loads," ISOPE 2001, Stavanger, Norway, June 17-22, 2001
Available Formats: Postscript PDF

Winterstein, Steven R., Kleiven, Gudmund, and Hagen, Oistein "Comparing Extreme Wave Estimates from Hourly and Annual Data" ISOPE 2001, Stavanger, Norway, June 17-22, 2001
Available Formats: Postscript PDF

Manuel, Lance, Veers, Paul S. and Winterstein, Steven R. "Parametric Models for Estimating Wind Turbine Fatigue Loads for Design" Proceedings of the 20th ASME Wind Energy Symposium, 2001 AIAA Aerospace Science Meeting, Paper No. AIAA-2001-0047
Available Formats: PDF

Fitzwater, LeRoy M. and Winterstein, Steven R. "Predicting Design Wind Turbine Loads from Limited Data: Comparing Random Process and Random Peak Models" Proceedings of the 20th ASME Wind Energy Symposium, AIAA Aerospace Sciences, Paper No. AIAA-2001-0046
Available Formats: Postscript PDF

Krunic, Dejan, Winterstein, Steven R. "Probabilistic modeling of Extreme Wave Crests: A Noisy Weibull Model" 8'th Annual ASCE Conference on Probablistic Mechanics and Structural Reliability, July 2000 (PMC2000-342)
Available Formats: Postscript PDF

Manuel, Lance, Winterstein, Steven R. "Reliability Based Predictions of a Design Air Gap for Floating Offshore Structures" 8'th Annual ASCE Conference on Probablistic Mechanics and Structural Reliability, July 2000 (PMC2000-343)
Available Formats: Postscript PDF

Kashef, Tina and Winterstein, Steven R. "Moment-Based Load and Response Models with Wind Engineering Applications" ASME Wind Energy Symposium, 37'th ASME/AIAA Annual Meeting, 1999. Also appeared in Jolar of Solar Engineering, ASME, Vol. 122, August 2000, pp. 122–128.
Available Formats: Postscript PDF

Manuel, Lance, Winterstein, Steven R., "Air Gap Response of Floating Structures under Random Waves: Analytical Predictions based on Linear and Nonlinear Diffraction"Oral Presentation Only, OMAE 99, Paper No. OMAE 99-6041,St. John's Newfoundland, July 1999
Available Formats: Word PDF

Winterstein, Steven R., and Sweetman, Bert "Air Gap Response of Floating Structures: Statistical Predictions vs Observed Behavior" Proceedings of OMAE 99, Paper No. OMAE 99-6042, St. John's Newfoundland, July 1999
Available Formats: Postscript PDF

Winterstein, Steven R., and Engebretsen, Knute "Reliability-Based Prediction of Design Loads and Responses for Floating Ocean Structures" Proceedings, 17'th International Conference, OMAE, Lisbon, 1998
Available Formats: Postscript PDF

Jha, Alok K., and Winterstein, Steven R., "Stochastic Fatigue Damage Accumulation due to Nonlinear Ship Loads" Proceedings, 17'th International Conference, OMAE, Lisbon, 1998
Available Formats: Postscript PDF

Jha, A.K., De Jong, P.R., and Winterstein, S.R., "Motions of a Spar Buoy in Random Seas: Comparing Predictions and Model Test Results" Proceedings, BOSS-97, Vol. 2, 1997, pp. 333-347
Available Formats: Postscript PDF

Schmucker, D.G., and Cornell, C.A., "Reliability of Jackets: Beyond-Static-Capacity," Proc. of 7th ASCE EMD/STD Specialty Conf. on Probabilistic Mechanics and Structural Reliability, WPI, Worcester, MA, August 7-9, 1996
Available Formats: Postscript PDF

Ude, Todd C. 1995. "Statistics by simulation from second-order models of responses of floating structures.'' 10th ASCE Engineering Specialty Mechanics Conference, Boulder, Colorado, May 21-24
Available Formats: Postscript

Winterstein, Steven R., Kumar, Satyendra, Kleiven, Gudmund "Environmental Contours and Extreme Response of Deep-Water Floating Structures.'' 10th ASCE Engineering Specialty Mechanics Conference, Boulder, Colorado, May 21-24
Available Formats: Postscript

Winterstein, Steven R, Torhaug, Tune, Kumar, Satyendra "Design Seastates for Extreme Response of Jackup Structures"
Available Formats: Postscript

Wintersteing, Steven R., Kumar, Satyendra "Reliability of Floating Structures: Extreme Response and Load Factor Design" OTC 7758
Available Formats: Postscript

Winterstein, S. R. and Jha, A. K. 1995. "Random Models of Second-Order Waves and Local Wave Statistics." Proceedings of the 10th Engineering Mechanics Speciality Conference. ASCE. Pages 1171-1174
Available Formats: Postscript

Winterstein, S.R., Ude, T.C., Cornell, C.A., Bjerager, P., and Haver, S. 1993. "Environmental parameters for extreme response: inverse FORM with omission factors.'' Proceedings, ICOSSAR–93, Innsbruck, Austria
Available Formats: Postscript PDF

Kashef, Tina and Winterstein, Steven R. "Relating Turbulence to Wind Turbine Blade Loads: Parametric Study with Multiple Regression Analysis" ASME Wind Energy Symposium, 36'th ASME/AIAA Annual Meeting, 1998. Also appeared in Jolar of Solar Engineering, ASME, Vol. 121, August 1999, pp. 156–161.
Available Formats: Postscript PDF

Winterstein, S.R. and C.H. Lange, 1996, "Fatigue Design of Wind Turbine Blades: Load and Resistance Factors from Limited Data,'' Proc., Wind Energy 1996, ASME, SED Vol. 17, pp. 93-101
Available Formats: PDF Postscript

Lange, C.H. and S.R. Winterstein, 1996, "Effect of Load Models and Limited Data on Load and Resistance Factors for Fatigue Design,'' Proc., 1996 ASCE Specialty Conference, to be presented
Available Formats: Postscript Winterstein, S.R. and C.H. Lange, 1995, "Load Models for Fatigue Reliability from Limited Data,'' Proc., Wind Energy 1995, ASME, SED Vol. 16, pp. 73–82
Available Formats: Postscript

Winterstein, S.R. and C.H. Lange, 1995, "Moment-Based Probability Models for Wind Engineering Applications,'' Proc., 10th Engineering Mechanics Speciality Conference, ASCE, Vol. 1, pp. 159-162
Available Formats: Postscript