Research

  • Dr. Montoya’s research interests are in the areas of :

Computational Modeling in Civil Engineering Applications
 

Sample Project:

      • More details can be found in the following companion papers (Nasouri et al., 2019): Part I, Part II.

Advances in Computational Methods for Solid Mechanics
 

Sample Project:

Deterioration of Materials under Corrosive Environments

Sample Project:

    • Modeling the potential risk of hydrogen embrittlement of Zn-Ni Coated high strength steel.

          Thanks to Elsyca for the donation of their software.

Sponsored Research Projects

  • Dessouky, S. , R. Guo, A. Montoya, H. Sharif, A. Bhalla, A.T. Papagiannakis, S. Binzaid, “A Hybrid Integrated Sensing and Energy Conversion (HiSEC) System for Harvesting Mechanical and Thermal Energy from Roadways” Sponsored by San Antonio City Public Service, $298,882 (September 1, 2017 – August 31, 2018).
  • Montoya, A. , B. Rincon-Troconis , H. Millwater, and H. Shipley, “Faculty Development Program at the University of Texas at San Antonio: Probabilistic Risk Assessment of Stress Corrosion Cracking in Nuclear Facilities” Sponsored by The Nuclear Regulatory Commission, $450,000 (June 30, 2017 – June 29, 2020).
  • Shipley, H., A. Montoya. , “Graduate Fellowship Program in Nuclear Safety: Critical Thinking, Research Skills and Professional Development” Sponsored by The Nuclear Regulatory Commission, $399,351 (June 30, 2017 – June 29, 2021).
  • Shipley, H., A. Montoya. and K. Nash, “Understanding Interactions of Chemical Contaminants to DOE Facility Material using Spectroscopic Techniques” Sponsored by Department of Energy/ Savannah River Nuclear Solutions, $273,134 (April 1, 2017 – March 31, 2018).
  • Dessouky, S., A. Montoya. , A.T. Papagiannakis , R. Guo, “Development of Highway Sensing and Energy Conversion (HISEC) Modules for Generating Power,” Sponsored by Texas Department of Transportation, $1,320,583 (January 1, 2015 – August 31, 2016).
  • Montoya, A., “A Novel Fracture Characterization Approach for Materials Exhibiting Inelastic Behavior Based on the MultiComplex Finite Element Method”, Sponsored by VPR-Proposal Enhancement Program, UTSA, $20,000 (February 1, 2016 – July 31, 2016).
  • Montoya, A., H. Shipley, S. Dessouky, andJ. Joseph, “CEE Course Re-Design Using Active Learning,” UTSA, College of Engineering through NSF TRESTLE, Program, $10,000 (January, 2016 – May, 2017).
  • Millwater, H, A. Montoya Wilkerson, A, “Three Dimensional Fracture Mechanics Capability for Structures Operating in High Temperature Thermal Environments,” Sponsored by US Department of Defense, Federal, $397,843 (August 15, 2015-August 14, 2018).
  • Montoya A., “Efficient Structural Health Management and Prognosis through a Novel Fracture Mechanics”, Sponsored by The University of Texas at San Antonio, $20,000 (September 1, 2015- August 2016).
  • Montoya, A.  and G. Waldemar, “Potential Risk of Hydrogen Embrittlement of ZnNi Coated High Strength Steel”, Sponsored by Southwest Research Institute, $66,028.00 (September 1, 2015-May 30, 2016).
  • Montoya, A., “Development of a Probabilistic Environmental Model to Predict the Deterioration Behavior of Steel Bridge Elements,” Sponsored by The University of Texas at San Antonio, UTSA, $27,500.00. (September 1, 2013 – August 31, 2014).
  • Diaz, M. A. , Chowdhury, A. H. , and Montoya, A., “Course Development for a Certificate in Risk and Safety Analysis of Structural Components in Nuclear Facilities”, Sponsored by the Nuclear Regulatory Commission, $199,981. (September 1, 2012 – June 30, 2015).

Publications

Published Journal Articles-Peer Reviewed

  1. Nasouri, R., A. Matamoros, A. Montoya, and F. Testik. Vulnerability of Coastal Bridges under Extreme Hurricane Conditions. Bridge Structures, In Press, 2019.
    https://doi.org/10.3233/BRS-190158

  2. A. Aguirre-Mesa, D. Ramirez-Tamayo, M. Garcia, A. Montoya, and H. Millwater. A Stiffness Derivative Local Hypercomplex-Variable Finite Element Method for Computing of the Energy Release Rate. Engineering Fracture Mechanics, In Press, 2019. https://doi.org/10.1016/j.engfracmech.2019.106581

  3. Nasouri, R., K. Nguyen, A. Montoya, A. Matamoros, C. Bennett, and J. Li. Thermally-Induced Demands due to Hot Dip Galvanization of High Mast Illumination Poles. Part I: Finite Element Model Development, Journal of Constructional Steel Research, 162:1-14, 2019.
    https://doi.org/10.1016/j.jcsr.2019.105705

  4. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Galvanizing-Induced Distortion in Steel Plate Girders, Part II: Effects of Welding and Galvanizing Practices. Journal of Bridge Engineering, In Press, 2019.
    https://doi.org/10.1061/(ASCE)BE.1943-5592.0001444

  5. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Galvanizing-Induced Distortion in Steel Plate Girders, Part I: Effects of Girder Geometry. Journal of Bridge Engineering, In Press, 2019.
    https://doi.org/10.1061/(ASCE)BE.1943-5592.0001445

  6. Aristizabal, M, D. Ramirez-Tamayo, M. Garcia, A. Aguirre-Mesa, A. Montoya, and H. Millwater. Quaternion and Octonion-based Finite Element Analysis Methods for Computing First Order Derivatives. Journal of Computational Physics, In Press, 2019. 
    https://doi.org/10.1016/j.jcp.2019.07.030

  7. Wagner, D., M. Garcia, A. Montoya, and H. Millwater. A Finite Element-based Adaptive Energy Response Function Method for Curvilinear Progressive Fracture. International Journal of Fatigue, 127: 229-245, 2019.
    https://doi.org/10.1016/j.ijfatigue.2019.05.036

  8. Fielder, R., H. Millwater, A. Montoya and P. Golden. Efficient Estimate of Residual Stress Variance Using Complex Variable Finite Element Methods. International Journal of Pressure Vessels and Piping, 173:101-113, 2019.
    https://doi.org/10.1016/j.ijpvp.2019.05.004

  9. Gholikhani, M., R. Nasouri, S. Tahami, S. Legette, S. Dessouky, and A. Montoya. Harvesting Kinetic Energy from Roadway Pavement through an Electromagnetic Speed Bump. Journal of Applied Energy, 250: 503-511, 2019.
    https://doi.org/10.1016/j.apenergy.2019.05.060

  10. Nasouri, R., K. Nguyen, A. Montoya, A. Matamoros, C. Bennett, and J. Li. Thermally-Induced Demands due to Hot Dip Galvanization of High Mast Illumination Poles. Part II: Effects of Geometrical Properties and Galvanizing Practices. Journal of Constructional Steel Research, 159:584-597, 2019.
    https://doi.org/10.1016/j.jcsr.2019.05.010

  11. Montoya, A., D. Ramirez, H. Millwater, and M. Kirby. A Complex-Variable Virtual Crack Extension Finite Element Method for Elastic-Plastic Fracture Mechanics. Engineering Fracture Mechanics, 202:242-258, 2018.
    https://doi.org/10.1016/j.engfracmech.2018.09.023

  12. Ramirez Tamayo, D., A. Montoya, and H. Millwater. Application of the Complex-variable Finite Element Method to Mixed Mode Fracture and Interface Cracks. AIAA Journal, 56(11):4632-4637, 2018.
    https://doi.org/10.2514/1.J057231

  13. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Thermomechanical Modeling of Welding and Galvanizing a Steel Beam Connection Detail to Examine Susceptibility to Cracking. Materials Performance and Characterization, ISSN 2739-1365, 2018.
    https://doi.org/10.1520/MPC20170115

  14. Ramirez, D., A. Montoya and H. Millwater. A Virtual Crack Extension Method for thermoelastic fracture using a complex-variable finite element method. Engineering Fracture Mechanics. 192:328-342, 2018.
    https://doi.org/10.1016/j.engfracmech.2017.12.013

  15. Fielder, R., A. Montoya, H. Millwater and P. Golden. Residual Stress Sensitivity Analysis Using a Complex Variable Finite Element Method. International Journal of Mechanical Sciences, 133, 2017.
    http://doi.org/10.1016/j.ijmecsci.2017.08.035

  16. Roshani, H., P. Jagtap, S. Dessouky, A. Montoya and A.T. Papagiannakis. Theoretical and Experimental Evaluation of Two Roadway Piezoelectric-Base Harvesting Prototypes. ASCE Journal of Materials in Civil Engineering. 2017. http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0002112

  17. Papagiannakis, A.T., A. Montoya, S. Dessouky, J. Helffrich. Development and
    Evaluation of Piezoelectric Prototypes for Roadway Energy Harvesting. ASCE Journal of Energy Engineering, 143(5), 2017.
    http://dx.doi.org/10.1061/(ASCE)EY.1943-7897.0000467

  18. Roshani, H., S. Dessouky, A. T. Papagiannakis, and A. Montoya. Experimental and Finite Element Assessment of Three Energy Harvesting Prototypes for Roadways. Journal of Innovative Infrastructure Solutions, 2(1):7, 2017.
    http://dx.doi.org/10.1007/s41062-017-0055-x

  19. Montoya, A. and H. Millwater. Sensitivity Analysis in Thermoelastic Problems Using the Complex Finite Element Method. Journal of Thermal Stresses. 40(3): 302-321, 2017.                                          http://dx.doi.org/10.1080/01495739.2016.1264871

  20. Papagiannakis, A.T, S. Dessouky, A. Montoya and H. Roshani. Energy Harvesting for Roadways. Procedia Computer Science, 83:758-765, 2016.
    http://dx.doi.org/10.1016/j.procs.2016.04.164

  21. Roshani, H., S. Dessouky, A. Montoya and A.T. Papagiannakis. Energy Harvesting from Asphalt Pavement Roadways Vehicle-Induced Stresses: A Feasibility Study. Applied Energy, 182:210-218, 2016.
    http://dx.doi.org/10.1016/j.apenergy.2016.08.116

  22. Millwater, H., D. Wagner, A. Baines and A. Montoya. A Virtual Crack Extension Method to Compute Energy Release Rates Using a Complex Variable Finite Element Method. Engineering Fracture Mechanics, 162:95-111, 2016.
    http://dx.doi.org/10.1016/j.engfracmech.2016.04.002

  23. Gomez-Farias, A., A. Montoya and H. Millwater. Complex Finite Element Sensitivity Method for Creep Analysis. International Journal of Pressure Vessels and Piping, 132-133:27-42, 2015.
    http://dx.doi.org/10.1016/j.ijpvp.2015.05.006

  24. Montoya, A., R. Fielder, A. Gomez-Farias and H. Millwater. Finite-Element Sensitivity for Plasticity Using Complex Variable Methods. ASCE Journal of Engineering Mechanics, 141(2):04014118, 2014.
    http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0000837

  25. Montoya, A., G. Deodatis, R. Betti and H. Waisman. Physics-Based Stochastic Model to Determine the Failure Load of Suspension Bridge Cables. Journal of Computing in Civil Engineering, 29(4): B4014002, 2014.
    http://dx.doi.org/10.1061/(ASCE)CP.1943-5487.0000393

  26. Montoya, A., H. Waisman and R. Betti. A Simplified Contact-Friction Methodology for Modeling Wire Breaks in Parallel Wire Strands. Computers & Structures, 100-101:39-53, 2012.
    http://dx.doi.org/10.1016/j.compstruc.2012.03.003

  27. Waisman, H, A. Montoya, R. Betti and I.C. Noyan. Load Transfer and Recovery Length in Parallel Wires of Suspension Bridge Cables. ASCE Journal of Engineering Mechanics, 137(4):227-237, 2011.
    http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0000220

Published Conference Proceedings-Peer Reviewed

  1. Nasouri, R., A. Shahriar, A. Matamoros, A. Montoya and F. Testik. Evaluating the Hydrodynamic Response of Coastal Bridges during an Extreme Weather Event. 2019 Tran-SET Conference Proceedings.
    https://www.matec-conferences.org/articles/matecconf/pdf/2019/20/matecconf_tran-set2019_01002.pdf
  2. Ramirez, D., A. Montoya and H. Millwater. A New Complex-valued Thermal Fracture Approach for Evaluating the Structural Integrity of Aircraft Structures. AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum, (AIAA 2018-0649), 2018.
    https://doi.org/10.2514/6.2018-0649
  3. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li, and A. Montoya. Distortion of Steel Plate Girders due to Hot-Dip Galvanizing. World Steel Bridge Symposium, 1-15, 2018.
    https://www.aisc.org/globalassets/nsba/conference-proceedings/2018/2018-wsbs-final-paper—bennett.pdf
  4. Nasouri, R, K. Nguyen, A. Montoya, A. Matamoros, C. Bennett., and J. Effect of Geometric Configuration on High-Mast Illumination Pole Demands During Galvanizing Process. Intergalva Conference Proceedings- Berlin, Germany, 2018. In Press.
  5. Roshani, H., S. Dessouky, A. Montoya, A.T. Papagiannakis, A. Abbas. Development and Finite Element Analysis of Piezoelectric-Based Prototypes for Harvesting Energy from Roadway Pavement. Advancement in the Design and Performance of Sustainable Asphalt Pavements. GeoMEast 2017. Sustainable Civil Infrastructures, 1-13, 2017.
    https://doi.org/10.1007/978-3-319-61908-8_1.
  6. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Sensitivity of Predicted Temperature in a Fillet Weld T-Joint to Parameters Used in Welding Simulation with Prescribed Temperature Approach. SIMULIA Conference Science in the Age of Experience 2017.
    https://www.3ds.com/fileadmin/PRODUCTS/SIMULIA/PDF/scc-papers/2017/temperature-fillet-weld-t-joint-univkansas-nguyen.pdf
  7. Roshani, H., S. Dessouky, A.T. Papagiannakis, A. Montoya, Feasibility Study on Harvesting Energy from Roadway Infrastructure. ASCE Geo-Chicago 2016, 588-597, 2016.
    http://dx.doi.org/10.1061/9780784480137.056
  8. Gomez-Farias, A. and A. Montoya. “A Novel Finite Element Sensitivity for Plasticity.” International Astronautical Congress, Toronto, Canada, 2014.
    http://www.academia.edu/9232156/A_NOVEL_FINITE_ELEMENT_SENSITIVITY_METHOD_FOR_PLASTICITY
  9. Montoya, A. and H. Ling. “Experimental Tests on Geocell Reinforced Nevada Sand.” Design and Practice of Geosynthetic Reinforced Soil Structures 369-376, 2013.
    http://www.destechpub.com/product/design-and-practice-of-geosynthetic-reinforced-soil-structures/
  10. Montoya, A., Betti, R., Deodatis, G. and Waisman, H. “A Stochastic Finite Element Approach to Determine the Safety of Suspension Bridge Main Cables.” ASCE-International Workshop on Computing in Civil Engineering Proceedings, pp 1-8, 2013.
    http://ascelibrary.org/doi/pdf/10.1061/9780784413029.001

Professional Reports

  1. Matamoros, A, F. Testik, R. Nasouri, and A. Montoya. Coastal Bridges under Hurricane Stresses along the Texas and Louisiana Coast. Project No. 17STTSA02. LSU Digital commons, Publication 29.
    https://digitalcommons.lsu.edu/transet_pubs/29
  2. Dessouky, S., R. Guo, A. Montoya, L. Walubita, J. Helffrich, A.T. Papagiannakis and A. Bhalla. Phase 1: Development of Highway Sensing and Energy Conversion (HiSEC) Modules for Generation Power. FHWA/TX-16/0-6871-1.
    http://library.ctr.utexas.edu/Presto/content/Detail.aspx?ctID=M2UxNzg5YmEtYzMyZS00ZjBlLWIyODctYzljMzQ3ZmVmOWFl&rID=MzU5&sID=MQ==&qrs=VHJ1ZQ==&q=KCop&qcf=M2UxNzg5YmEtYzMyZS00ZjBlLWIyODctYzljMzQ3ZmVmOWFl

 

Students

DOCTORAL STUDENTS

Reza Nasouri (co-Advisor: Adolfo Matamoros)

Research Topics: 

  • Prognosis and Mitigation of Weldment Cracking in High Mast Illumination Poles due to Galvanization
  • Structural Vulnerability of Coastal Bridges under Extreme Hurricane Conditions
  • Numerical Analysis of Energy Harvesting Devices

Publications:

  1. Nasouri, R., K. Nguyen, A. Montoya, A. Matamoros, C. Bennett, and J. Li. Thermally-Induced Demands due to Hot Dip Galvanization of High Mast Illumination Poles. Part I: Finite Element Model Development. Journal of Constructional Steel Research. In Press, 2019.
  2. Nasouri, R., K. Nguyen, A. Montoya, A. Matamoros, C. Bennett, and J. Li. Thermally-Induced Demands due to Hot Dip Galvanization of High Mast Illumination Poles. Part II: Effects of Geometrical Properties and Galvanizing Practices. Journal of Constructional Steel Research, 159:584-597, 2019.
    https://doi.org/10.1016/j.jcsr.2019.05.010
  3. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Galvanizing-Induced Distortion in Steel Plate Girders, Part II: Effects of Welding and Galvanizing Practices. Journal of Bridge Engineering. In Press, 2019.
  4. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Galvanizing-Induced Distortion in Steel Plate Girders, Part I: Effects of Girder Geometry. Journal of Bridge Engineering. In Press, 2019.
  5. Gholikhani, M., R. Nasouri, S. Tahami, S. Legette, S. Dessouky, and A. Montoya. Harvesting Kinetic Energy from Roadway Pavement through an Electromagnetic Speed Bump. Journal of Applied Energy, 250: 503-511, 2019.
    https://doi.org/10.1016/j.apenergy.2019.05.060
  6. Nguyen, K., R. Nasouri, C. Bennett, A. Matamoros, J. Li and A. Montoya. Thermomechanical Modeling of Welding and Galvanizing a Steel Beam Connection Detail to Examine Susceptibility to Cracking. Materials Performance and Characterization, ISSN 2739-1365, 2018.
    https://doi.org/10.1520/MPC20170115.
  7. Tahami, S. A., M. Gholikhani, R. Nasouri, S. Dessouky, and A.T. Papagianakis. Developing a New Thermoelectric Approach for Energy Harvesting from Asphalt Pavements. Journal of Applied Energy, 283:786-798, 2019. https://doi.org/10.1016/j.apenergy.2019.01.152
  8. Matamoros, A, F. Testik, R. Nasouri, and A. Montoya. Coastal Bridges under Hurricane Stresses along the Texas and Louisiana Coast. Project No. 17STTSA02. LSU Digital commons, Publication 29.
    https://digitalcommons.lsu.edu/transet_pubs/29
  9. Rezaeimalek, S., R. Nasouri, J. Huang, S.Bin-Shaffique. Curing method and mix design evaluation of a styrene-acrylic based liquid polymer for sand and clay stabilization. Journal of Materials in Civil Engineering, 30(9): 04018200-1, 2018. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002396
  10. Rezaeimalek, S., R. Nasouri, J. Huang, S. Bin-Shaffique, S. Gilazghi . Comparison of short-term and long-term performances for polymer-stabilized sand and clay.  Journal of Traffic and Transportation Engineering, 4(2):145-155, 2017. https://doi.org/10.1016/j.jtte.2017.01.003

Daniel Ramirez (co-Advisor: Harry Millwater)

Research Topics:

  • Complex Finite Element Method
  • Progressive Fracture

Publications:

  1. A. Aguirre-Mesa, D. Ramirez-Tamayo, M. Garcia, A. Montoya, and H. Millwater. A Stiffness Derivative Local Hypercomplex-Variable Finite Element Method for Computing of the Energy Release Rate. Engineering Fracture Mechanics, In Press, 2019.
  2. Aristizabal, M, D. Ramirez-Tamayo, M. Garcia, A. Aguirre-Mesa, A. Montoya, and H. Millwater. Quaternion and Octonion-based Finite Element Analysis Methods for Computing First Order Derivatives. Journal of Computational Physics, In Press.
    https://doi.org/10.1016/j.jcp.2019.07.030
  3. Montoya, A., D. Ramirez-Tamayo, H. Millwater, and M. Kirby. A Complex-Variable Virtual Crack Extension Finite Element Method for Elastic-Plastic Fracture Mechanics. Engineering Fracture Mechanics, 202:242-258, 2018.
    https://doi.org/10.1016/j.engfracmech.2018.09.023
  4. Ramirez-Tamayo, D., A. Montoya, and H. Millwater. Application of the Complex-variable Finite Element Method to Mixed Mode Fracture and Interface Cracks. AIAA Journal, 56(11):4632-4637, 2018.
    https://doi.org/10.2514/1.J057231
  5. Ramirez-Tamayo, D., A. Montoya and H. Millwater. A Virtual Crack Extension Method for thermoelastic fracture using a complex-variable finite element method. Engineering Fracture Mechanics. 192:328-342, 2018.
    https://doi.org/10.1016/j.engfracmech.2017.12.013

Adnan Shahriar

Research Topics: Numerical Wave Generation/ Extraterrestrial Habitats

Mehdi Najarian

Research Topic: Bridge Fatigue Assesment

Arsalan Majlesi

Research Topic: Hydrodynamic Response of Coastal Bridges due to Extreme Weather Events

Echizeni Ikpah

Research Topic: Residual Stresses in Steel Structures

MASTER STUDENTS

Sarah Legette

Research Topic: Energy Harvesting from Roadways

Publications:

  1. Gholikhani, M., R. Nasouri, S. Tahami, S. Legette, S. Dessouky, and A. Montoya. Harvesting Kinetic Energy from Roadway Pavement through an Electromagnetic Speed Bump. Journal of Applied Energy, 250: 503-511, 2019.
    https://doi.org/10.1016/j.apenergy.2019.05.060

Matthew Balcer(co-Advisor: Harry Millwater)

Research Topic: Variance Approximation

UNDERGRADUATE STUDENTS

Daniela Gomez

Media

News

  • 7/23/2019 Congratulations to  Reza Nasouri on successfully defending his PhD thesis.  
  • 7/25/2019 Congratulations to  Sarah Legette on successfully defending her MS thesis.