Dr. STEVEN WINTERSTEIN

Steve Winterstein is a consulting engineer and teacher in topics of structural engineering and reliability. His areas of specialization include probability and statistical modelling, random vibrations, and wind/wave loads and responses. He has taught these topics at Stanford University (1985-2002), and more recently as a visiting lecturer at ETH Zurich and the Danish Technical University. While at Stanford, he was a principal investigator of the Reliability of Marine Structures program, which combined post-M.S. graduate study with basic research in structural reliability. His areas of applications range from the modelling of joint ocean environmental processes (wind-wave-current), through the modelling and analysis of the resulting hydrodynamic loads and structural responses, to the development of probability-based design codes. His methods in common industry use include the Hermite model of nonlinear vibration and the Environmental Contour model of wind-wave site characterization. His degrees include a B.Sc. in Mathematics, and both M.Sc. and Ph.D. in Civil Engineering, all from the Massachusetts Institute of Technology.
Selected papers are arranged below by topic. A more complete list of publications is available here.

Environmental Contours

  • Haver, Sverre and Winterstein, Steven R., "Environmental Contour Lines: A Method for Estimating Long Term Extremes by a Short Term Analysis," Transactions, Society of Naval Architects and Marine Engineers, Vol. 116, 2009, pp. 116-127
  • 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
  • Winterstein, Steven R., and Engebretsen, Knute, ``Reliability-Based Prediction of Design Loads and Responses for Floating Ocean Structures," Proceedings, 17th International Conference, OMAE, Lisbon, 1998
  • Winterstein, Steven R., Ude, T.C., Cornell, C.A., Bjerager, P., and Haver, S, "Environmental Parameters for Extreme Response: Inverse FORM with Omission Factors," Proceedings, ICOSSAR-93, Innsbruck, Austria, 1993

Floating Offshore Structures and Ships

  • Sweetman, Bert and Winterstein, Steven R., "Non-Gaussian Airgap Response Models for Floating Structures," Journal of Engineering Mechanics, ASCE, Vol. 129, No. 3, March 2003, pp. 302-309
  • 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, Vol. 12, No. 3, Sept. 2002
  • 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, Vol. 24, No. 2, April 2002
  • Winterstein, Steven R., Ude, Todd C., and Kleiven, Gudmund, "Springing and Slow Drift Responses: Predicted Extremes and Fatigue vs Simulation," Proceedings, BOSS Conference, July, 1994.
  • Ness, Odd B., McHenry, George, Mathisen, Jan, and Winterstein, Steven R., "Nonlinear  Analysis of Ship Rolling in Random Beam Seas," Proceedings, STAR Symposium on 21st-Century Ship and Offshore Vessel Design, Production, and Operation, April 12-15, 1989.

Nonlinear and Moment-Based Load Models

  • Winterstein, Steven R. and MacKenzie, Cameron A., "Extremes of Nonlinear Vibration: Models Based on Moments, L-Moments, and Maximum Entropy," Proceedings, OMAE 2011, Paper OMAE2011-49867
  • Kashef, Tina and Winterstein, Steven R., "Moment-Based Load and Response Models with Wind Engineering Applications," ASME Wind Energy Symposium, 37th ASME/AIAA Annual Meeting, 1999. Also appeared in Journal of Solar Engineering, ASME, Vol. 122, August 2000, pp. 122--128.
  • Jha, Alok K. and Winterstein, Steven R., "Stochastic Fatigue Damage Accumulation Due to Nonlinear Ship Loads," Journal of Offshore Mechanics and Arctic Eng, Vol. 122, No. 4, 2000
  • Winterstein, Steven R., "Nonlinear Vibration Models for Extremes and Fatigue," Journal of Engineering Mechanics, ASCE, Vol. 114, No. 10, October 1988
  • Winterstein, Steven R., "Moment-Based Hermite Models of Random Vibration," Afdelingen for Baerende Konstruktioner, Danmarks Tekniske Holjskole, Lyngby, OSBN 87-87336-78-2, 1987

Ocean Wave and Current Modelling

  • Winterstein, Steven R., Haver, Sverre, and Nygaard, Einar, "Turkstra Models of Current Profiles," Proceedings, OMAE 2009, Paper OMAE2009-79691
  • Winterstein, Steven R., Kleiven, Gudmund, and Hagen, Oistein, "Comparing Extreme Wave Estimates from Hourly and Annual Data," Proceedings, ISOPE 2001, Stavanger, Norway, June 17-22, 2001
  • Jha, Alok K. and Winterstein, Steven R., "Nonlinear Random Ocean Waves: Prediction and Comparison with Data," Proceedings, OMAE2000, Paper OMAE2000-6125
  • Winterstein, Steven R. and Jha, Alok K., "Random Models of Second-Order Waves and Local Wave Statistics," Proceedings, 10th ASCE Eng. Mech. Specialty Conference, Boulder, Vol II, 1995, pp. 1171-1174

Wind Energy

  • Fitzwater, LeRoy M. and Winterstein, Steven R., "Predicting Design Wind Turbine Loads from Limited Data: Comparing Random Process and Random Peak Models," Proceedings, 20th ASME Wind Energy Symposium, 2001 AIAA Aerospace Science Meeting, Paper No. AIAA-2001-0046.  
  • Manuel, Lance, Veers, Paul S. and Winterstein, Steven R., "Parametric Models for Estimating Wind Turbine Fatigue Loads for Design," Proceedings, 20th ASME Wind Energy Symposium, 2001 AIAA Aerospace Science Meeting, Paper No. AIAA-2001-0047.
  • Kashef, Tina and Winterstein, Steven R., "Relating Turbulence to Wind Turbine Blade Loads: Parametric Study with Multiple Regression Analysis," ASME Wind Energy Symposium, 36th ASME/AIAA Annual Meeting, 1998. Also appeared in Journal of Solar Engineering, ASME, Vol. 121, August 1999, pp. 156--161.

Earthquake Engineering

  • Thrainsson, Hjortur, Winterstein, Steven R., and Kiremidjian, Anne S., "Markov DFT Models of Non-Stationary Ground Motion," Proceedings, 8th Annual ASCE Conference on Probabilistic Mechanics and Structural Reliability, 2000 (Paper No. PMC2000-341).  
  • Cornell, C. Allin, Wu, S-C, Winterstein, Steven R. Dieterich, J.H., and Simpson, R.W., "Seismic Hazard Induced by Mechanically Interactive Fault Segments," Bulletin of the Seismological Society, Vol. 83(2), 1993, pp. 436-449.
  • Cornell, C. Allin and Winterstein, Steven R., "Temporal and Magnitude Dependence in Earthquake Recurrence Models," Bulletin of the Seismological Society, Vol. 78(4), 1988, pp. 1522-1537.