Bill Davids, Ph.D, P.E.

Department Chair of Civil and Environmental Engineering
John C. Bridge Professor, Distinguished Maine Professor (2015)

105A Boardman HallWilliam Davids
University of Maine
Orono, Maine 04469-5711
Phone: 207.581.2170
Fax: 207.581.3888
Email: william.davids@maine.edu

Education:

Ph.D. – Civil/Structural Engineering
University of Washington, 1998.

M.S. – Civil/Structural Engineering
University of Maine, 1991.

B.S. – Civil Engineering
University of Maine, 1989.

Courses:

CIE 440 Structural Analysis I
CIE 442 Reinforced Concrete Design
CIE 548 Bridge Engineering
CIE 549 Numerical Methods in Engineering
CIE 640 Advanced Structural Analysis

Research Interests:

Bill’s primary research interests are in the areas of wood mechanics and engineered wood composites, bridge engineering, inflatable structures, and the analysis of concrete and asphalt pavements. His research projects often encompass both experimental work and the development of problem-specific numerical analysis techniques. He has significant expertise in computational structural mechanics and numerical methods, which he has applied to areas ranging from the structural analysis of inflatable fabric arches to the development of software for the finite-element analysis of concrete and asphalt pavements. Bill is the primary developer of EverFE, a software package for the linear and nonlinear 3D finite element analysis of jointed plain concrete pavements that couples a highly interactive graphical user interface and object-oriented C++ finite element code. Bill has also co-developed the program EverStressFE, a 3D finite-element analysis program for flexible pavements that incorporates a variety of advanced analysis and unique visualization capabilities. Bill is a registered Professional Engineer in the State of Maine, and gained four years of professional experience as a structural bridge engineer with Sverdrup Corporation (now Jacobs Engineering) in their Seattle office.

Recent Peer-Reviewed Publications (2008-2018):

  • Majeed HS, Davids WG, Lopez-Anido RA, Burns J (2018). Experimental and numerical investigation of splicing of concrete-filled fiber-reinforced polymer tubes. Construction and Building Materials, 173: 461-473.
  • Davids WG, Willey N, Lopez-Anido R, Shaler S, Gardner D, Edgar R, Tajvidi M (2017). Structural performance of hybrid SPFs-LSL cross-laminated timber panels. Construction and Building Materials, 149: 156-163.
  • Young AC, Davids WG, Whitney DJ, Clapp JD, Goupee AJ (2017). Structural testing and analysis of a braided, inflatable fabric torus structure. Acta Astronautica, 139(2017): 189-200.
  • Young, AC, Davids WG, Goupee AJ and Clapp JD (2017). Computationally efficient finite-element modeling of braided, inflated structural members with axial reinforcing. Journal of Engineering Mechanics, 143(6): 04017017.
  • Walton HJ, Davids WG, Landon ME and Goslin KM (2016). Experimental evaluation of buried arch bridge response to backfilling and live loading. Journal of Bridge Engineering, 21(9): 04016053.
  • Walton HJ, Davids WG, Landon ME and Clapp JD (2016). Simulation of buried arch bridge response to backfilling and live loading. Journal of Bridge Engineering, 21(9): 04016052.
  • Clapp JD, Young AC, Davids WG, Goupee AJ (2016). Bending response of reinforced, inflated, tubular braided fabric structural members. Thin-Walled Structures, 107(2016): 415-426.
  • Clapp JD, Davids WG, Goupee AJ and Young AC (2016). Experimental determination of inflatable, braided tube constitutive properties. Strain, 52: 148-161.
  • Salkar R, Salkar A and Davids WG (2015). Crippling of webs with partial depth stiffeners under patch loading. AISC Engineering Journal, 52(4): 221-231.
  • Loring HB and Davids WG (2015). Mechanically fastened composite strips for flexural strengthening of concrete beams. Construction and Building Materials, 76: 118-129.
  • Parlin NJ, Davids WG, Nagy E and Cummins T (2014). Dynamic response of lightweight wood-based flexible wall panels to blast and impulse loading. Construction and Building Materials, 50: 237-245.
  • Luszczki, G., Clapp, J., Davids, W. and Lopez-Anido, R. (2013). “Withdrawal capacity of plain, annular shank and helical shank nail fasteners in spruce-pine-fir lumber.” Forest Products Journal 63(5/6): 213:220.
  • Davids, W.G., Poulin, T.J. and Goslin, K.G. (2013). “Finite-Element Analysis and Load Rating of Flat Slab Concrete Bridges.” Journal of Bridge Engineering, 18(10): 946-956.
  • Dagher, H.J., Bannon, D.J., Davids, W.G., Lopez-Anido, R.L., Nagy, E. and Goslin, K. (2012). “Bending Behavior of Concrete-Filled Tubular FRP Arches for Bridge Structures.” Construction and Building Materials, 37: 432-439.
  • Brayley, K.E., Davids, W.G. and Clapp, J.D. (2012). “Bending Response of Externally Reinforced, Inflatable, Braided Fabric Arches and Beams.” Construction and Building Materials, 30: 50-58.
  • Lagaňa, R., Davids, W.G., Muszyński, L., Shaler, S.M. (2011). “Moment-Curvature Analysis of Coupled Bending and Mechano-sorptive Response of Red Spruce Beams.” Wood and Fiber Science, 43(3): 280-292. (Winner of both the 2012 1st place George Marra Award from the SWST and the 2012 LJ Markwardt Wood Engineering Award from the FPS.)
  • Davids, W.G., Rancourt, D.G. and Dagher, H.J. (2011). “Bending Performance of Composite Wood I-Joist/OSB Panel Assemblies.” Forest Products Journal, 61(3): 246-256.
  • Kabche, J.P., Peterson, M.L. and Davids, W.G. (2011). “Effect of Inflation Pressure on the Constitutive Response of Coated Woven Fabrics Used in Airbeams.” Composites Part B: Engineering, 42: 526-537.
  • Alvarez-Valencia, D., Dagher, H.J., Davids, W.G. Lopez-Anido, R.A. and Gardner, D.J. (2010). “Structural Performance of Wood Plastic Composite Sheet Piling.” Journal of Materials in Civil Engineering, 22(12): 1235-1243.
  • Silva-Henriquez, R., Gray, H., Dagher, H.J. Davids, W.G. and Nader, J. (2010). “Strength Performance of Prestressed GFRP-Glulam Beams.” Forest Products Journal, 60(1): 33-39.
  • Nagy, E.N., Landis, E. and Davids, W.G. (2010). “Acoustic Emission Measurements and Lattice Simulations of Microfracture Events in Spruce.” Holzforschung, 64: 455-461.
  • Davids, W.G., Sandford, T., Ashley, S., DeLano, J. and Lyons, C. (2010). “Behavior of Integral Abutment Bridges with Short Steel Pile-Supported Abutments.” Journal of Bridge Engineering, 15(1): 32-43.
  • Davids, W.G. (2009). “In-Plane Load-Deflection Response and Buckling of Inflated Fabric Arches.” Journal of Structural Engineering, 135(11): 1320-1329.
  • Malm, C.G., Davids, W.G., Peterson, M.L. and Turner, A.W. (2009). “Experimental Characterization and Finite Element Analysis of Inflated Fabric Beams.” Construction and Building Materials, 23(5): 2027-2034.
  • Davids, W.G. and Zhang, H. (2008). “Beam Finite-Element for Nonlinear Analysis of Pressurized Fabric Beam-Columns.” Engineering Structures, 30(7): 1969-1980.
  • Turner, A.M., Kabche, J.P., Peterson, M.L., Davids, W.G. (2008). “Tension/Torsion Testing of Inflatable Fabric Tubes.” Experimental Techniques, 32(2): 47-52.
  • Davids, W.G., Nagy, E. and Richie, M.C. (2008). “Fatigue Behavior of Composite-Reinforced Glulam Bridge Girders.” Journal of Bridge Engineering, 13(2): 183-191.

Recent Journal Publications (2014-2018)

  • Majeed HS, Davids WG, Lopez-Anido RA, Burns J (2018). Experimental and numerical investigation of splicing of concrete-filled fiber-reinforced polymer tubes. Construction and Building Materials, 173: 461-473.
  • Davids WG, Willey N, Lopez-Anido R, Shaler S, Gardner D, Edgar R, Tajvidi M (2017). Structural performance of hybrid SPFs-LSL cross-laminated timber panels. Construction and Building Materials, 149: 156-163.
  • Young AC, Davids WG, Whitney DJ, Clapp JD, Goupee AJ (2017). Structural testing and analysis of a braided, inflatable fabric torus structure. Acta Astronautica, 139(2017): 189-200.
  • Young, AC, Davids WG, Goupee AJ and Clapp JD (2017). Computationally efficient finite-element modeling of braided, inflated structural members with axial reinforcing. Journal of Engineering Mechanics, 143(6): 04017017.
  • Walton HJ, Davids WG, Landon ME and Goslin KM (2016). Experimental evaluation of buried arch bridge response to backfilling and live loading. Journal of Bridge Engineering, 21(9): 04016053.
  • Walton HJ, Davids WG, Landon ME and Clapp JD (2016). Simulation of buried arch bridge response to backfilling and live loading. Journal of Bridge Engineering, 21(9): 04016052.
  • Clapp JD, Young AC, Davids WG, Goupee AJ (2016). Bending response of reinforced, inflated, tubular braided fabric structural members. Thin-Walled Structures, 107(2016): 415-426.
  • Clapp JD, Davids WG, Goupee AJ and Young AC (2016). Experimental determination of inflatable, braided tube constitutive properties. Strain, 52: 148-161.
  • Salkar R, Salkar A and Davids WG (2015). Crippling of webs with partial depth stiffeners under patch loading. AISC Engineering Journal, 52(4): 221-231.
  • Loring HB and Davids WG (2015). Mechanically fastened composite strips for flexural strengthening of concrete beams. Construction and Building Materials, 76: 118-129.
  • Parlin NJ, Davids WG, Nagy E and Cummins T (2014). Dynamic response of lightweight wood-based flexible wall panels to blast and impulse loading. Construction and Building Materials, 50: 237-245.

Conference Papers (2014-2018)

  • Willey N, Davids W, Lopez-Anido R, Shaler S, Gardner DJ, Tajvidi M (2016). Structural performance of hybrid cross-laminated timber panels using laminated strand lumber and northeastern US spruce. Proceedings of the World Conference on Timber Engineering, Vienna, Austria, August 2016.
  • Clapp JD, Young AC, Davids WG and Goupee AJ (2014). Structural response of hypersonic inflatable aerodynamic decelerator braided tube components and elements. 23rd AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona, FL, March, 2015.
  • Burns M, Landon-Maynard M, Davids WG, Chung J and Gaudin C (2014). Centrifuge modeling of suction caissons under orthogonal double line loading. Physical Modelling in Geotechnics: Proceedings of the 8th International Conference on Physical Modeling in Geotechnics 2014 (ICMPG 2014). Perth, Australia, Jan 14 – 17, 2014.

Conference Presentations and Abstracts (2014-2018)

  • Davids WG and Tomlinson S (2017). Load Testing of flat slab bridges: comparison with finite-element response predictions and implications for load rating. Presented at Structures Congress 2017, Denver, CO, April 2017.
  • Young AC, Davids WG, Clapp JD and Goupee AJ (2016). Computationally efficient structural modeling of reinforced, inflatable, braided fabric tubes. Presented at ASCE EMI 2016, Nashville, TN, May 2016.
  • Young AC, Davids WG, Clapp JD and Goupee AJ (2015). Computationally efficient structural modeling of reinforced, inflatable, braided fabric tubes. Presented at Membranes 2015, Barcelona, Spain, September 2015.
  • Walton H, Davids, WG and Maynard M (2014). Finite element modeling of soil-structure interaction and backfill sequencing in buried arch bridges. WCCM XI World Congress on Computational Mechanics, Barcelona, Spain, July 20-25.

Invited Talks (2014-2018)

  • “Recent UMaine Bridge Load Testing and Capacity Analyses: Research Results and Implications.” Presented at the 2016 Maine Transportation Conference, Augusta, ME, December 2016.
  • “Hypersonic Inflatable Aerodynamic Decelerator Peer Review: UMaine Beam and Braid Testing.” Presented to NASA-LaRC engineers, scientists, and external program review board, Langley, VA, September 2014.
  • “Promoting Bridge Safety in Maine: Advanced Analysis, Field Testing and Implications for Load Rating.” Maine Society of Professional Engineers Educational Symposium, Orono, ME, March 2014.