Dennis Tweten
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Dr. Dennis Tweten

Physics and Engineering Department

 

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Assistant Professor of Engineering

Office Location: Euler Science Complex
Phone: (765) 998-4672
Email: dntweten@taylor.edu

Specialties: Nonlinear Dynamics, Vibrations, Controls, Numerical Modeling of Systems, Parameter Identification, Time Delay Systems, Chaos Control

 

Vitae PDF: Dr. Dennis Tweten's Printable Vitae


Dennis J. Tweten

236 W Read Ave
Upland, Indiana 46989
765-998-4672
dntweten@taylor.edu

EDUCATION

Duke University
Durham, North Carolina
PhD, Mechanical Engineering Jun. 2013
Dissertation: Numerical and Experimental Investigation of Multistable Systems

The University of Texas
Austin, Texas
MSE, Mechanical Engineering May 2004

LeTourneau University
Longview, Texas
BS, Engineering, summa cum laude, Aug. 2000

HONORS AND AWARDS

James B. Duke Fellowship, Duke University, 2010

Phi Kappa Phi, National Honor Society, 2003

Thrust Fellowship, The University of Texas, 2001

Epsilon Eta Sigma, Engineering Honor Society, 1994

CURRENT RESEARCH ACTIVITY

Stochastic resonance in multistable vibration sensors and energy harvesters.

Parameter identi cation of noisy nonlinear systems.

Nonlinear methods in biological systems.

JOURNAL PUBLICATIONS

D. Tweten, B. Mann, "Delayed feedback control of chaos for arbitrary delays analyzed with the spectral element method." Int. J. Dynamics Control, 2013. doi:10.1007/s40435-013-0029-6

D. Tweten, B. Mann, "On the use of weighting matrices to improve harmonic balance parameter identi cation results," J. Sound Vib., 332(12):2941-2953. 2013. doi:10.1016/j.jsv.2013.01.010

D. Tweten, B. Mann, "Spectral element method and the delayed feedback control of chaos," Phys. Rev. E, 86(4):046214. 2012. doi:10.1103/PhysRevE.86.046214

D. Tweten, G. Lipp, F. Khasawneh, B. Mann, "On the comparison of semi-analytical methods for the stability analysis of delay di erential equations," J. Sound Vib., 331(17):4057{4071. 2012. doi:10.1016/j.jsv.2012.04.009

SUBMITTED JOURNAL ARTICLES

D. Tweten, B. Mann, "Experimental investigation of colored noise in stochastic resonance of a bistable beam." Physica D, (submitted May 2013).

D. Tweten, Z. Ballard, B. Mann, \Minimizing error in the logarithmic decrement method through uncertainty propagation," J. Sound Vib., (submitted Sept. 2013)

ACADEMIC EXPERIENCE

Taylor University
Upland, Indiana
Assistant Professor, Physics & Engineering Dept.
July 2013 to Present

INDUSTRIAL EXPERIENCE

Southwest Research Institute

San Antonio, Texas
Research Engineer
Feb. 2004 to Jul. 2010

Managed the development of the user interface (UI) of a proprietary pulsation analysis software used for piping systems.
- Programmed the UI in Visual C++
- Speci ed postprocessing techniques
- Coordinated preprocessor and postprocessor programming by subcontractors

Supported Boeing's effort to integrate 30mm guns onto the AC130 aircraft.
- Created a nonlinear, multi-degree of freedom, numerical model of the trainable gun mount
- Evaluated controls design using the nonlinear model

Sandia National Laboratories

Albuquerque, New Mexico
Intern
Summer 2002 & 2003

Supported research in the control and modeling of the Electroslag Remelting (ESR) process.
- Programmed a nite di erence heat transfer model in C++ of the ESR electrode
- Assisted in ESR experiments

Cessna Aircraft Company

Wichita, Kansas
Associate Engineer
Aug. 2000 to Jul. 2001

PATENTS

Reciprocating Gas Compressor with Speed Modulation of Compressor Driver for Pulsation Avoidance
K. Brun, D. Tweten, M. Nored (Patent 8,052,398)
A method for reducing pulsation in a gas compressor system by modulated engine speed.

AFFILIATIONS

American Society of Mechanical Engineers (ASME)

American Society for Engineering Education (ASEE)

SCHOLARLY SERVICE

Article reviewer, International Journal of Dynamics and Control

Article reviewer, Journal of Sound and Vibration

TEACHING EXPERIENCE

Taylor University
Upland, Indiana
ENP301 Statics: Instructor, Fall 2013

Duke University
Durham, North Carolina
EGR125 Control Systems: Teaching Assistant, Fall 2011
EGR123 Dynamics: Teaching Assistant, Spring 2011

Southwest Research Institute
San Antonio, Texas
Instructor for Gas Machinery Research Council workshops for engineers and technicians.

The University of Texas
Austin, Texas
ME338 Machine Elements: Teaching Assistant, Fall 2003
ME266K Design Project: Teaching Assistant, Fall 2002 & Spring 2003
ME366J Design Methodology: Teaching Assistant, Fall 2001 & Spring 2002

CONFERENCE PUBLICATIONS

D. Tweten, B. Mann, "Parameter identi cation of a nonlinear beam energy harvester," Proceedings of the 24th Conference on Mechanical Vibration and Noise, Chicago, 2012, August 12-15, 2012.
2nd Place - Student Paper Competition

D. Tweten, G. Lipp, F. Khasawneh, B. Mann, "Comparative study of semi-analytical methods for the stability analysis of delay di erential equations," Proceedings of the 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Conference, Washington DC, August 28-31, 2011.

K. Brun, M. Nored, D. Tweten, R. Kurz, "Transient Pressure Losses Due to Fluid-Structure Interactions in Compression Plants," GT2010-22017, 2010 Proceedings of the ASME Turbo Expo Conference, Glasgow, Scotland, UK, June 14-18, 2010.
Best Paper Award

K. Brun, M. Nored, D. Tweten, R. Kurz, "The Assessment of Dynamic Pressure Losses In Compression Plants," 25th Gas Machinery Conference, Atlanta, GA, October 5-7, 2009.

D. Tweten, M. Nored, K. Brun, "The Physics of Pulsations in Reciprocating Compressor Stations," 24th Gas Machinery Conference, Albuquerque, NM, October 6-8, 2008.

OTHER PUBLICATIONS

D. Tweten, K. Brun, "The Physics of Pulsations-Part II," CompressorTechII Magazine, December 2008.

D. Tweten, K. Brun, "The Physics of Pulsations-Part I," vCompressorTechII Magazine, November 2008.

Thermal and Electrical Model of the Electrode of the Electroslag Remelting Process. Master's thesis, The University of Texas, Austin, TX, 2004.

TECHNICAL PRESENTATIONS

D. Tweten, B. Mann, "Parameter identi cation of a nonlinear beam energy harvester," 24th Conference on Mechanical Vibration and Noise, Chicago, 2012, August 12-15, 2012.

D. Tweten, G. Lipp, F. Khasawneh, B. Mann, "Comparative study of semi-analytical methods for the stability analysis of delay di erential equations," 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Washington DC, August 28-31, 2011.

D. Tweten, "Torsional Analysis," GMRC Workshop: Controlling Pulsations in Compressor Stations and Piping Systems, San Antonio, TX, March 2-4, 2010.

K. Brun, M. Nored, D. Tweten, R. Kurz, "The Assessment of Dynamic Pressure Losses In Compression Plants," 25th Gas Machinery Conference, Atlanta, GA, October 5-7, 2009.

D. Tweten, "Torsional Analysis," GMRC Workshop: Controlling Pulsations in Compressor Stations and Piping Systems, San Antonio, TX, October 21-23, 2008.

D. Tweten, M. Nored, K. Brun, "The Physics of Pulsations in Reciprocating Compressor Stations," 24th Gas Machinery Conference, Albuquerque, NM, October 6-8, 2008.

C. Scrivner, D. Tweten, B. White, "Compressor Design for Pulsation & Vibration Control," 24th Gas Machinery Conference, Albuquerque, NM, October 6-8, 2008.