Teaching: ^top

Courses Taught at the University of Michigan:

ME211 Introduction to Statics and Strength of Materials
NA 310 Ship Strength I
NA 320 Ship Resistance and Propulsion I
NA 401 Small, High Speed Craft
NA 421 Ship Model Testing
NA 440 Marine Dynamics II
NA 490 Directed Study, Research and Special Problems
NA 520 Marine Hydrodynamics III
NA 526 Naval Hydrodynamics II (similar to the expanded NA 540)
NA 540 Marine Dynamics III
NA 575 Computer-Aided Marine Design Project
NA 591 Reading and Seminar in Naval Architecture
NA 621 Experimental Marine Hydrodynamics
NA 792 Professional Thesis

New and Revised Courses Introduced at the University of Michigan:

NA 440: Marine Dynamics II, Introduced completely revised course Fall 1977 to 31 students.
NA540: Marine Dynamics III, Introduced completely revised four hour course Fall 1993 to 19 students.
NA 621: Experimental Marine Hydrodynamics, Spring 1980 (team taught with three others), Taught ten times since to 5 to 12 students.

Research Interests: ^top

Research interests have expanded over the years from initial work in slender body diffraction forces, hydroelastic springing, and wave energy devices to now include nonlinear dynamics, high speed planing, impact hydrodynamics, extreme vessel motions and loads , oscillatory, time dependent real flows, and stern flap hydrodynamics/design. The research involves the application of experimental, theoretical, and numerical methods. The goal of these efforts has been twofold: to define accurate hydrodynamic models which permit the determination of the nonlinear fluid loads and, once having identified the proper hydrodynamic model, solve, both qualitatively and quantitatively, the complicated nonlinear equations of motion. While these research activities have generated a new and better understanding of the physical phenomena involved, they have also provided undergraduate, Masters level, Professional level, and Ph.D. level support in addition to creating opportunities for collaborative faculty efforts.

Biography: ^top

Armin W. Troesch, is currently a Professor and former Chair of the Department of Naval Architecture and Marine Engineering at the University of Michigan. He is a Fellow of the Society of Naval Architects and Marine Engineers and held a Professional Engineer’s license with the State of Michigan. Since 1969, he has held various engineering, teaching, and research positions including Design Engineer at the Electric Boat Division of General Dynamics, Visiting Research Associate at the DTNSWC Bethesda, MD, and Director of the U-M Marine Hydrodynamics Laboratory. Research activities have included slender body diffraction forces, hydroelastic springing, wave energy devices, nonlinear dynamics, and extreme vessel motions. Based on this body of work, he has authored or co-authored with his students (34 M.S. and Ph.D.’s) more than 130 publications.

Publications: ^top

Seyffert, H., Kim, D-H, and Troesch, A. W., “Rare Wave Groups”. Ocean Engineering. Vol. 122 1 August 2016, Pages 241–252. doi:10.1016/j.oceaneng.2016.05.053

Seyffert, H., and Troesch, A. W., “Data Mining Pt. Reyes Buoy For Rare Wave Groups”. Journal of Offshore Mechanics and Arctic Engineering. Vol. 138, February, 2016.

Kim, D., and Troesch, A.W., ” Statistical Estimation of Extreme Roll Responses in Short Crested Irregular Head Seas, ” 2013 SNAME Transactions, presented at SNAME Annual Meeting, Bellevue, WA, Nov 2013.

Hodapp, D.P., Kim, D-H., and Troesch, A. W., “On the finite approximation of a gaussian process and its effect on extreme value theory”. Ocean Engineering. (2012), http://dx.doi.org/10.1016/j.oceaneng.2012.10.009, and Vol. 58, pp. 135-143, JAN 15 2013

Kim, D., Engle, A. and Troesch, A.W., “Estimates of Long-Term Combined Wave Bending and Whipping for Two Alternative Hull Forms, ” SNAME Transactions, presented at SNAME Annual Meeting, Houston, Nov 2011. (Recipient of the SNAME-ABS – Captain Joseph H. Linnard Prize for best paper in the Transactions of the Society, 2012)

Alford, L. and Troesch, A. W. “Generating Extreme Ship Responses using Non-Uniform Phase Distributions”, Ocean Engineering, Vol. 36, No. 9-10, Jul. 2009, pp. 641-649.

McCue, Leigh, and Troesch, A. W. “Probabilistic Determination of Critical Wave Height for a Multi-degree of Freedom Capsize Model,” Ocean Engineering, Vol 32/13, pp1608-1622, 2005.

Jiang, C., Troesch, A. W., and Shaw, S. S. “Global Stability Analysis for a Time-varying Dynamic System under Random Excitation,” Theme Issue on Nonlinear Dynamics of Ships, Philosophical Transactions of the Royal Society, London. June 15, 2000

Thiagarajan, K.P. and Troesch, A., “Hydrodynamic Damping Estimation and Scaling for Tension Leg Platforms,” Journal of Offshore Mechanics and Arctic Engineering, Vol. 116, 1994, pp. 70-76.

Hsieh, S-R., Troesch, A.W., Shaw, S., “A Nonlinear Probabilistic Method for Predicting Vessel Capsizing,” Proceedings of the Royal Society, London. 446, 1994, pp. 195-211.

Troesch, A. and Hicks, J.D., “The Efficient Use of Simulation in Planing Hull Motion Analysis,” Naval Engineers Journal, January 1994, pp. 75-85. (Recipient of the American Society of Naval Engineers’ “Jimmie” Hamilton Award for the best original paper published in the Naval Engineers Journal during the year 1994.)

Falzarano, J., Shaw, S., and Troesch, A., “Application of Global Methods for Analyzing Dynamical Systems to Ship Rolling Motion and Capsizing,” International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, March, 1992, pp. 101-116.

Troesch, A.W., “On the Hydrodynamics of Vertically Oscillating Planing Hulls,” Journal of Ship Research, Vol. 36, No. 4, December 1992, pp. 317-331.

Kim, S. and Troesch, A., “Streaming Flows Generated by High Frequency-Small Amplitude Oscillations of Arbitrarily Shaped Cylinders, ” Physics of Fluids A, Vol.1, No. 6, June 1989, pp. 975-985.

Troesch, A.W., “Wave Induced Hull Vibrations – An Experimental and Theoretical Study,” Journal of Ship Research, Vol. 28, No. 2, June 1984, pp. 141-150.