Nate Mauntler

Advisor

Dr. Tony Schmitz

Project Description

When modeling joint behavior, it is often necessary to consider the coupled evolution of wear geometry and contact load conditions. In this way, a mechanical designer is afforded a means of predicting not only length of life, but performance degradation over the life cycle. Unfortunately, such models are often computationally expensive and require simplifying assumptions regarding the behavior of the rest of the mechanism, making experimental validation a challenge. Nate Mauntler has been working with Drs. Tony Schmitz, Nam Ho Kim, and W. Gregory Sawyer to develop, build, and evaluate an instrumented crank-slider mechanism used to provide experimental data for comparison with dynamic and wear models. In this design, care was taken to isolate friction, wear, and error motions to a single revolute joint between the crank and follower links. The remainder of the mechanism is constructed in such a way as to idealize mechanical behavior, allowing the investigators to study the dynamic contributions of a single "real" joint independent of other factors.

Education

  • B.S., University of Florida, Mechanical Engineering, 2004
  • M.S., University of Florida, Mechanical Engineering, 2006

Awards

  • 2007 American Society for Precision Engineering Annual Meeting Scholarship

Publications

  1. Mukras, S., Kim, N.H., Mauntler, N., Schmitz, T., and Sawyer, W.G., Analysis of Planar Multibody Systems with Revolute Joint Wear, submitted to Wear.
  2. Kim, N.H., Mukras, S., Mauntler, N., Schmitz, T., and Sawyer, W.G., 2009, Measuring Contact Load and Wear Evolution in a Revolute Joint Bushing, Proceedings of 2009 NSF Engineering Research and Innovation Conference, June 22-25, Honolulu, HI (on CD, 7 pages).
  3. Mukras, S., Mauntler, N., Kim, N., Schmitz, T., and Sawyer, W.G., 2009, Modeling a Slider-Crank Mechanism With Joint Wear, Paper No. 2009-01-0403, SAE 2009 World Congress, Detroit, MI, April 20-23, 2009.
  4. M. Hamilton, L. Alvarez, N. Mauntler, N. Argibay, R. Colbert, D. Burris, C. Muratore, A. Voevodin, S. Perry, and W. Sawyer, 2008, A Possible Link Between Macroscopic Wear and Temperature Dependent Friction Behaviors of MoS2 Coatings, Tribology Letters, 32/2: 91-98.
  5. N. Mauntler, J. Ziegert, and T. Schmitz, 2008, The Influence of Process Variation on a Cortical Bone Interference Fit Pin Connection, Journal of Manufacturing Science and Engineering, 130/2.
  6. Mauntler, N., Schmitz, T., Mukras, S., Kim, N.-H., and Sawyer, W.G., 2008, Investigating Bushing Wear in Slider-Crank Mechanism, Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC2008, October 20-22, Miami, FL.
  7. Mukras, S., Mauntler, N., Kim, N.-H., Schmitz, T., and Sawyer, W.G., 2008, Dynamic Modeling of a Slider-Crank Mechanism under Joint Wear, DETC2008-49244, Proceedings of the 32nd Annual Mechanism and Robotics Conference, IDETC2008, August 3-6, New York, NY.
  8. T. Schmitz, J. Couey, E. Marsh, N. Mauntler, and D. Hughes, 2007, Runout Effects In Milling: Surface Finish, Surface Location Error, and Stability, Machine Tools & Manufacture, 47: 841-851.
  9. Mauntler, N., Schmitz, T., Hamilton, M., Steffens, J., Argibay, N., Bares, J., and Sawyer, W.G., 2007, Tribometers for In Situ Profilometry, Proceedings of the Society of Tribologists and Lubrication Engineers Annual Meeting, Philadelphia, PA.
  10. Mauntler, N., Kim, N.-H., Sawyer, W.G., and Schmitz, T., 2007, Instrumented Crank Slider Mechanism for Validation of a Combined Finite Element Wear Model, Proceedings of American Society for Precision Engineering Annual Meeting, October 14-19, Dallas, TX (on CD, 4 pages).
  11. Mauntler, N., Rennie, A., Schmitz, T., and Sawyer, W.G., 2006, Design and Testing of a Tribometer for In Situ Microscopy, Proceedings of American Society for Precision Engineering Annual Meeting, October 15-20, Monterey, CA (on CD, 4 pages).
  12. Mauntler, N., Ziegert, J., and Schmitz, T., 2006, Dimensional Study of an Interference Fit Spinal Allograft, Proceedings of American Society for Precision Engineering Annual Meeting, October 15-20, Monterey, CA (on CD, 4 pages).
  13. Bardt, J., Mauntler, N., Ziegert, J., Sawyer, W.G., and Schmitz, T., 2005, Precision Molding of Metallic Micro-components, Proceedings of American Society for Precision Engineering Annual Meeting, October 9-14, Norfolk, VA (on CD, 4 pages).
  14. Bardt, J., Mauntler, N., Bourne, G., Schmitz, T., Ziegert, J., and Sawyer, W.G., 2005, Metallic Glass Surface Patterning by Micro-molding, Proceedings of American Society of Mechanical Engineers International Mechanical Engineering Congress and Exposition, IMECE2005-81099, Orlando, FL (on CD, 6 pages).