DIS (Dynamic Interactions Simulator) is a general-purpose finite element code. DIS was developed specifically to accurately simulate mechanical systems composed of multiple rigid and flexible components, fluid handling components, controllers, and body-connection element such as revolute and prismatic joints.

DIS has been successfully used to solve difficult design problems by both researchers and commercial engineers by accurately simulating multi-component mechanical systems, flexible space structures, space tethers, belt-drives, time-dependent fluid flow, and fluid-structure interaction.


DIS RELATED PUBLICATIONS

Journal Papers

  • Leamy, M.J. and Wasfy, T.M., "Dynamic modeling of timing belt frictional contact using an explicit finite element formulation," Document No. 2005-01-0503, SAE 2005 Transactions, Journal of Engines, pp. 605-610, Februrary 2006.
  • Leamy, M.J. and Wasfy, T.M., "Time-accurate finite element modeling of the transient, steady-state, and frequency responses of serpentine and timing belt-drives," International Journal of Vehicle Design, Vol. 39(3), Special Issue on Belt Drives and CVT in Vehicle Applications: New Concepts and Trends, pp. 272-297, 2005.
  • Wasfy, T.M. and Noor, A.K., "Computational strategies for flexible multibody systems," ASME Applied Mechanics Reviews, Vol. 56(6), pp. 553-613, 2003.
  • Leamy, M.J. and Wasfy, T.M., "Transient and steady-state dynamic finite element modeling of belt-drives," ASME Journal of Dynamics Systems, Measurement, and Control, Vol. 124(4), pp. 575-581, 2002.
  • Leamy, M.J. and Wasfy, T.M., "Analysis of belt-drive mechanics using a creep-rate dependent friction law," ASME Journal of Applied Mechanics, Vol. 69(6), pp. 763-771, 2002.
  • Wasfy, T.M. and Noor, A.K., "Visualization of CFD Results in Immersive Virtual Environments," Advances in Engineering Software, Vol. 32, pp. 717-730, 2001.
  • Noor, A.K. and Wasfy, T.M, "Simulation of Physical Experiments in Immersive Virtual Environments," Engineering Computations, Vol. 18(3-4), pp. 515-538, 2001.
  • Leamy, M., Noor, A.K., and Wasfy, T.M., "Dynamic Simulation of a Space Tethered-Satellite System," Computer Methods in Applied Mechanics and Engineering, Vol. 190(37-38), pp. 4847-4870, June 2001.
  • Wasfy, T.M. and Noor, A.K., "Object-Oriented Virtual Reality Environment for Visualization of Flexible Multibody Systems," Advances in Engineering Software, Vol. 32(4), pp. 295-315, March 2001.
  • Wasfy, T.M. and Noor, A.K., "Multibody Dynamic Simulation of the Next Generation Space Telescope Using Finite Elements and Fuzzy Sets," Computer Methods in Applied Mechanics and Engineering, Vol. 190(5-7), pp.803-824, November 2000.
  • Wasfy, T.M. and Noor, A.K., "Application of Fuzzy Sets To Transient Analysis of Space Structures," Finite Elements in Analysis and Design, Vol. 29(3-4), pp. 153-171, 1998.
  • Wasfy, T.M. and Noor, A.K., "Finite Element Analysis of Flexible Multibody Systems with Fuzzy Parameters," Computer Methods in Applied Mechanics and Engineering, Vol. 160(3-4), pp. 223-244, 1998.
  • Wasfy, T.M., West, A.C. and Modi, V., "Parallel Finite Element Computations of Unsteady Incompressible Flows," International Journal for Numerical Methods in Fluids, Vol. 26(1), pp. 17-37, 1998.
  • Wasfy, T.M. and Noor, A.K., "Computational Procedure for Simulating the Contact/Impact Response in Flexible Multibody Systems," Computer Methods in Applied Mechanics and Engineering, Vol. 147(1-2), pp. 153-166, 1997.
  • Wasfy, T.M. and Noor, A.K., "Modeling and Sensitivity Analysis of Multibody Systems Using New Solid, Shell and Beam Elements," Computer Methods in Applied Mechanics and Engineering, Vol. 138(1-4) (25th Anniversary Issue), pp. 187-211, 1996.
  • Wasfy, T.M., "A Torsional Spring-Like Beam Element for the Dynamic Analysis of Flexible Multibody Systems," International Journal for Numerical Methods in Engineering, Vol. 39(7), pp. 1079-1096, 1996.
  • Wasfy, T.M., "Modeling Flexible Multibody Systems Including Impact and Thermal Effects Using the Finite Element Method and Convected Coordinates," Ph.D. Dissertation, Columbia University, 1994.

Conference Papers and Presentations

  • Wasfy, T.M. and Leamy, M.J., "Modeling the dynamic frictional contact of tires using an explicit finite element code," ASME DETC2005-84694, 5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Long Beach, CA, 2005.
  • Wasfy, T.M. and Leamy, M.J., "Dynamic modeling of synchronous belt-drives using an explicit finite element code," ASME DETC2005-85103, 5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Long Beach, CA, 2005.
  • Leamy, M.J. and Wasfy, T.M., "Dynamic modeling of timing belt frictional contact using an explicit finite element formulation," Paper No. 05B-146, Doc No. 2005-01-0503, SAE 2005 Congress, Detroit, MI, 2005.
  • Wasfy, T.M., "Modeling spatial rigid multibody systems using an explicit-time integration finite element solver and a penalty formulation," ASME Paper No. DETC2004-57352, Proceeding of the DETC: 28th Biennial Mechanisms and Robotics Conference, DETC, Salt Lake, Utah 2004.
  • Wasfy, T.M., Leamy, M.J., and Meckstroth, R.J., "Prediction of system natural frequencies using an explicit finite element code withapplication to belt-drives," ASME Paper No. DETC2004-57117, Proceeding of the DETC: 28th Biennial Mechanisms and Robotics Conference, DETC, Salt Lake, Utah 2004.
  • Meckstroth, R.J., Wasfy, T.M., and Leamy, M.J., "Finite element study of the dynamic response of serpentine belt-drives with isolator clutches," SAE 2004 Congress, Paper No. 2004-01-1347, Detroit, MI, 2004.
  • Leamy, M.J., Meckstroth, R.J., and Wasfy, T.M., "Finite element study of belt-drive frictional contact under harmonic excitation," SAE 2004 Congress, Paper No. 2004-01-1346, Detroit, MI, 2004.
  • Wasfy, T.M. and Wasfy, A.M., "An object-oriented graphical interface for dynamic finite element modeling of flexible multibody mechanical systems," Proceeding of MDP-8, Cairo University Conference on Mechanical Design and Production, Cairo, Egypt, January 4-6, 2004.
  • Wasfy, T.M., "Asperity spring friction model with application to belt-drives," 19th Biennial Conference on Mechanical Vibration and Noise, Paper No. DETC2003-48343, ASME International 2003 DETC, Chicago, IL, 2003.
  • Wasfy, T.M., "Edge projected planar rectangular element for modeling flexible multibody systems," 19th Biennial Conference on Mechanical Vibration and Noise, Paper No. DETC2003-48351, ASME International 2003 DETC, Chicago, IL, 2003.
  • Wasfy, T.M. and Leamy, M.J., "Effect of bending stiffness on the dynamic and steady-state responses of belt-drives," 27th Biennial Mechanisms and Robotics Conference, Paper No. DETC2002/MECH-34223, ASME International 2002 DETC, Montreal, Canada, 2002.
  • Wasfy, T.M. and Leamy, M.J., "An object-oriented graphical interface for dynamic finite element modeling of belt-drives," 27th Biennial Mechanisms and Robotics Conference, Paper No. DETC2002/MECH-34224, ASME International 2002 DETC, Montreal, Canada, 2002.
  • Leamy, M.J. and Wasfy, T.M., "Dynamic Finite Element Modeling of Belt-Drives Including One-Way Clutches," ASME 2001 International Mechanical Engineering Congress and Exposition, New York, NY, 2001.
  • Wasfy, T.M., "Lumped-Parameters Brick Element for Modeling Shell Flexible Multibody Systems," 18th Biennial Conference on Mechanical Vibration and Noise, ASME International 2001 DETC, 2001.
  • Leamy, M.J. and Wasfy, T.M., "Dynamic Finite Element Modeling of Belt-Drives," 18th Biennial Conference on Mechanical Vibration and Noise, ASME International 2001 DETC, 2001.
  • Wasfy, T.M. and Noor, A.K., "Multibody Dynamic Simulation of the Next Generation Space Telescope Using Finite Elements and Fuzzy Sets," Proceedings of the 41st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Paper No. AIAA-2000-1577, Atlanta, April 2000.
  • Wasfy, T.M. and Noor, A.K., "Application of Fuzzy Sets To Transient Analysis of Space Structures," Proceedings of the 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Paper No. AIAA-98-1833, Vol. 2, Long Beach, CA, April 1998, pp. 1056-1067.
  • Wasfy, T.M., "Modeling Contact/Impact of Flexible Manipulators with a Fixed Rigid Surface," Proceedings of the 1995 IEEE International Conference on Robotics and Automation, Vol. 1, Japan, May 1995, pp. 621-626.
  • Ish-Shalom, J. and Wasfy, T.M., "A Finite Element Model for Real-Time Compensation of the Thermal Deformation of the Platen of a Planar Step Motor," Proceedings of the 1994 IEEE International Conference on Robotics and Automation, Vol. 2, San Diego, California, May 1994, pp. 1490-1495.
  • Wasfy, T.M., "Modeling Continuum Multibody Systems Using the Finite Element Method and Element Convected Frames," Machine Elements and Machine Dynamics, ASME DE-Vol. 71 (23rd ASME Mechanisms Conference, Minneapolis, MN), Sep. 1994, pp. 327-336.