Research Associate/Part-Time Faculty, Department of Civil Engineering
- Ph.D.Civil Engineering (Computational Mechanics Major), May 1992, The University of Akron.
Dissertation: Linear and Nonlinear Finite Element Analysis of Laminated Composite Structures At High Temperatures. - M.S. Civil Engineering, The University of Akron, Akron, Ohio.
Masters thesis: Computational Simulation of Composite Structures With and Without Damage. - B.S. Civil Engineering, The University of Akron, Akron, Ohio.
Phone: (330) 972-8628
E-mail – smtew@dune.ascn3.uakron.edu
Experience
- 1994 – Present, Part-Time Faculty, Department of Civil Engineering, and University of Akron Research Associate, NASA Glenn Cooperative Grant.
- 1991 – 1992, University of Toledo Onsite Resident Research Associate at NASA Glenn Research Center.
- 1986 – 1991, Research Assistant, NASA Glenn Research Center/The University of Akron Fellowship Program
Courses:
- Introduction to Mechanics of Solids
- Theory of Structures
Research Projects:
- Micromechanics Analysis Code, MAC, for the analysis of composites on a micromechanics level. MAC is currently in use by such companies as Allison, Battelle, Goodyear.
- Implementation of plastic and viscoplastic continuum-based and micro-mechanics-based constitutive models for anisotropic materials into commercial finite element codes, MARC and ABAQUS:
- Creep models.
- Implicit integration of viscoplastic models with consistent tangent stiffness.
- Micromechanics constitutive models.
- Development of software used to optimize the selection of the material constants in viscoplastic constitutive models, COMPARE
- Computationally coupled fatigue-damage model into the finite element code MARC.
Awards
- NASA Software of the Year Award, Runner-up, for: The Generalized Method of Cells/Micromechanics Analysis Code, GMC/MAC.
Publications
- A.F. Saleeb, S.M. Arnold, M.G. Castelli, T.E. Wilt, and W. Graf, “A General Hereditary Multimechanism-Based Deformation Model With Application to The Viscoelastoplastic Response of Titanium Alloys”, International Journal of Plasticity, to appear.
- A.F. Saleeb, T.E. Wilt, and W. Li, “Robust Integration Schemes for Generalized Viscoplasticity with Internal-State Variables”, Computers and Structures, Vol. 74, 2000, pp. 601-628.
- A.F. Saleeb, T.E. Wilt, and W. Li, “An Implicit Integration Scheme For Generalized Viscoplasticity with Dynamic Recovery”, Computational Mechanics, Vol. 21, n. 6, 1999, pp. 429-440.
- T. E. Wilt, S. M. Arnold and A. F. Saleeb, “A Coupled/Uncoupled Computational Scheme For Deformation and Fatigue Damage Analysis of Unidirectional MMC’S”, ASTM Conference: Applications of Continuum Damage Mechanics To Fatigue and Fracture, STP1315, Orlando Florida, May 1996.
- T. E. Wilt and S. M. Arnold, “Micromechanics Analysis Code (MAC): User Guide 2.0”, NASA TM 107290, 1996.
- S. M. Arnold, M. J. Pindera, and T. E. Wilt, “Influence of Fiber Architecture on the Inelastic Response of Metal Matrix Composites”, Int. J. Plasticity, Vol. 12, No. 4, pp.507-545, 1996.
- S. M. Arnold, A. F. Saleeb, and T. E. Wilt, “A Modeling Investigation of Thermal and Strain Induced Recovery and Nonlinear Hardening in Potential Based Viscoplasticity”, J. Engng. Mater. Tech., Vol. 117, April 1995, pp. 157-167.
- T. E. Wilt, “On The Finite Element Implementation of The Generalized Method of Cells Micromechanics Constitutive Model”, NASA CR 195451, 1995.
- T. E. Wilt and S. M. Arnold, “Micromechanics Analysis Code (MAC): User Guide 1.0”, NASA TM 106706, 1994.
- S. M. Arnold, T. E. Wilt, M. J. Pindera, “Influence of Fiber Architecture on The Elastic and Inelastic Response of Metal Matrix Composites”, NASA TM 106705, 1994.
- S. M. Arnold, T. E. Wilt, M. J. Pindera, “Impact of Fiber Architecture on The Inelastic Response of Metal Matrix Composites Via The Generalized Method of Cells (GMC)”, Proceedings of the 7th Annual HITEMP Review, October 1994.
- T. E. Wilt and S. M. Arnold, “A Coupled/Uncoupled Deformation and Fatigue Damage Algorithm Utilizing the Finite Element Method”, NASA TM 106526, March 1994.
- T. E. Wilt and S. M. Arnold, “A Computationally-Coupled Deformation and Damage Finite Element Methodology”, Proceedings of the 6th Annual HITEMP Review 1993, Vol. II, NASA CP 19117, pp.35:1-15.
- S. M. Arnold, T. E. Wilt, A. F. Saleeb, and M. G. Castelli, “An Investigation of Macro and Micromechanical Approaches For A Model MMC System”, Proceedings of the 6th Annual HITEMP Review 1993, Vol. II, NASA CP 19117, pp.52:1-12.
- S. M. Arnold, A. F. Saleeb, and T. E. Wilt, “A Modeling Investigation of Thermal And Strain Induced Recovery and Nonlinear Hardening in Potential Based Viscoplasticity”, NASA TM 106122, March 1993.
- S. M. Arnold, and T. E. Wilt, “A Deformation And Life Prediction Of A Circumferentially Reinforced SiC/Ti 15-3 Ring”, DE-Vol. 55, Reliability, Stress Analysis and Failure Prevention, Ed. R. J. Schaller, 1993, pp. 231-238.
- A. F. Saleeb, and T. E. Wilt, “Analysis of The Anisotropic Viscoplastic-Damage Response of Composite Laminates-Continuum Basis and Computational Algorithms”, Int. J. Numer. Meth. in Engng., Vol. 36, pp. 1629-1660, 1993.
- S. M. Arnold, T. E. Wilt, “Influence of Engineered Interfaces On Residual Stresses and Mechanical Response In Metal Matrix Composites”, NASA TM 105438, March 1992.
- T. E. Wilt, A. F. Saleeb, and T. Y. Chang, “A Mixed Element For Laminated Plates and Shells”, J. of Comput. & Struct., Vol. 37, pp. 597-613, 1990.
- A. F. Saleeb, T. Y. P. Chang, T. Wilt, I. Iskovitz, “On Finite Element Implementation and Computational Modeling of High Temperature Composites”, NASA CR 185120, 1989.
- T. E. Wilt, P. L. N. Murthy, and C. C. Chamis, “Fracture Toughness Computational Simulation of General Delaminations in Fiber Composites”, Journal of Reinforced Plastics and Composites, Vol. 8, January 1989.