NRS ASSOCIATES LLC ( August 2001—present) Technical Consultant Computer simulation of mechanical components and systems and manufacturing processes. Areas of specialization include elastic-plastic deformations (forming, staking, etc.), rolling and sliding contact, and heat treatment simulation.
THE TORRINGTON COMPANY, Torrington, Connecticut (July 1990—August 2001) Manager, Engineering Analysis & Technical Services Manage technical staff of fourteen in Torrington's Advanced Technology Center, including Engineering Analysis Group, Quality Engineering & Statistics, Information Technology, Technical Information Center.
Group Leader, Engineering Analysis Lead technical staff of six (four analytical engineers and two programmer/analysts) in the Advanced Technology Center's Engineering Analysis Group. Prioritize the group's workflow and R&D project portfolio, lead and execute technical projects, provide technical supervision and oversight on project work by staff analysts.
Senior Research Engineer Research Engineer Perform computational (finite element) and mathematical analysis to support operating divisions in improving design and performance of new or existing products and processes; provide technical assistance as needed to all divisions of the Torrington Company; plan, initiate and manage analytical and engineering mechanics projects; provide technical supervision and oversight on project work by staff analysts. Research areas: Analytical simulation of the quenching of steel; mathematical modeling of stresses in polymer-lined track rollers; bearing analysis; computer modeling of forming and assembly processes; product design optimization; kinematic analysis of steering linkages and precision mechanical assemblies.
RENSSELAER POLYTECHNIC INSTITUTE, Troy, New York (May 1985—April 1990) Research Associate PostDoctoral Fellow Perform theoretical analyses and write computer programs to solve original and contract research problems; assist in preparation of proposals, reports, presentations, and publications; supervise visiting postdoctoral researchers and graduate research assistants.
Research areas: Analytical studies of ultrasonic vibrations and ultrasonic devices; analysis of static deformation of anisotropic plates with complex edge conditions; forced vibrations in piezoelectric plates; shock wave propagation in large cylindrical pressure vessels.
EDUCATION
Ph.D. IN MECHANICS, Rensselaer Polytechnic Institute, Troy, New York (June 1984) M.S. IN MECHANICS, Rensselaer Polytechnic Institute, Troy, New York (December 1979) Research areas: Finite element analysis of end effects in anisotropic beams; analytical studies of ultrasonic resonators and transducers of piezoelectric ceramics using variational techniques. B.S. IN PHYSICS, Bates College, Lewiston, Maine (June 1976)
RECENT ACTIVITIES
Design and materials evaluation of a mechanical clip and bracket system for an orthodontic device.
Performed computer simulation of a cast-iron oil tank fitting to assist in a failure analysis.
Elastic-plastic analysis to simulate a quality assurance test on snowmobile chains. Simulation results explained an unexpected failure mode and were used to make recommendations for a redesign.
Developed a test procedure and associated analytical methodology to determine elastic-plastic material properties necessary for modeling and simulation of powder-forged materials for a composite camshaft. Applied to design/development process for an automotive application.
Developed new method for design of tooling for punching/stamping/wrapping/welding operation, resulting in savings of $50K in tooling costs for each affected product.
Developed analytical procedure for modeling quench-induced residual stresses in through-hardened parts. Applied procedure to support development of automated induction heat-treatment and quenching system now used in regular production for several mid-volume applications.
Developed and enhanced procedure for analysis of a composite camshaft assembly process. Applied to the design of an automotive camshaft supplied to a major US manufacturer, and licensed to major a European manufacturer.
Project Manager for Torrington's efforts on NCMS Heat Treatment Distortion Project and Torrington's representative on project steering committee. Leader of the Heat Transfer team, coordinating efforts and resources of members from six different companies and four Department of Energy laboratories. Collaborative project resulted in DANTE® Heat Treat Simulation software.
Co-author of four publications on numerical simulation of heat treatment of steel parts.
RECENT PUBLICATIONS
"Development of a Carburizing and Quenching Simulation Tool: Program Overview," W. Dowling, D. Shick, T. Pattok, Y. Helen Gu, B.L. Ferguson, and M.A. Howes, Heat Treatment of Metals1997(1), 1-6 (1997).
"Development of a Carburizing and Quenching Simulation Tool: Determination of Heat Transfer Coefficients in Salt," D. Shick, D. Chenoweth, N. Palle, C. Mack, W. Copple, W.-T. Lee, W. Elliott, G. Ludtka, R. Lenarduzzi, H. Walton, and M.A. Howes, Proceedings of the 2nd International Conference on Quenching and the Control of Distortion, ASM International, Metals Park, OH, 357-366 (1996).
"Development of a Carburizing and Quenching Simulation Tool: A Material Model for Carburizing Steels Undergoing Phase Transformations," D. Bamman, V. Prantil, A. Kumar, J. Lathrop, D. Mosher, M. Callabresi, H.-J. Jou, M. Lusk, G. Krauss, W. Elliott, G. Ludtka, T. Lowe, W. Dowling, D. Shick, and D. Nikkel, Proceedings of the 2nd International Conference on Quenching and the Control of Distortion, ASM International, Metals Park, OH, 367-375 (1996).
"Predictive Model & Methodology for Heat Treatment: Formation of a Collaboration," T. Pattok and D.V. Shick, presentation at National Coalition for Advanced Manufacturing National Conference on Federal Lab—University—Industry Cooperation in Developing Advanced Manufacturing Technologies, October 14–16, 1997, Albuquerque, NM.
"Resonant Wave Propagation in Gun Tubes with Eccentric Bores," H.F. Tiersten, D.V. Shick, Wave Motion 21(1), 75-84 (Feb 1995).
PROFESSIONAL AFFILIATIONS
Member, American Society of Mechanical Engineers. Member, United States Association for Computational Mechanics. Member, ASM International. Charter Member, ASM Heat Treatment Society. Member, Institute of Electrical and Electronics Engineers.
