Student Bio: Oliver Giraldo-Londoño
Oliver Giraldo Londoño

Oliver Giraldo-Londoño
Graduate Research Assistant

4132 Jesse W. Mason Building
790 Atlantic Drive NW
Atlanta, GA, 30318

e-mail: ogiraldo6@gatech.edu

Education

Graduate    
  Doctor of Philosophy, Civil Engineering Aug 2016 - present
  School of Civil and Environmental Engineering  
  Georgia Institute of Technology - Atlanta, GA  
     
  PhD Student, Civil Engineering Aug 2014 - Jul 2016
  Department of Civil and Environmental Engineering  
  University of Illinois - Urbana-Champaign, Illinois  
     
  Master of Science in Civil Engineering Mar 2012 - May 2014
  Department of Civil Engineering  
  Ohio University - Athens, Ohino  
     
Undergraduate    
  Bachelor of Science in Civil Engineering Aug 2004 - Mar 2010
  Department of Civil Engineering  
  National University of Colombia - Medellin, Colombia  

Research Interests

Topology Optimization

  • Stress-constrained topology optimization
  • Multi-physics topology optimization
  • Single- and multi-material topology optimization of nonlinear structures
  • Topology optimization of multi-material viscoelastic microstructures and soft materials
  • Multi-scale topology optimization

Fracture Mechanics

  • Cohesive zone modeling
  • Computational fracture analysis of rate-dependent materials
  • Fractional calculus-based constitutive models for fracture simulation of soft materials

Nonlinear Mechanics

  • Buckling and post-buckling analysis of Timoshenko beam-columns
  • Nonlinear analysis of structures with initial geometric imperfections and semi-rigid connections
  • Large-deflection analysis of structures subjected to high temperatures

Research Experience

Graduate Research Assistant Aug 2016 - present
  School of Civil and Environmental Engineering  
  Georgia Institute of Technology  
Graduate Research Assistant Aug 2014 - Aug 2016
  Department of Civil and Environmental Engineering  
  University of Illinois at Urbana-Champaign  
Graduate Research Assistant June 2012 - Aug 2014
  Department of Civil Engineering  
  Ohio University at Athens  
Undergraduate Research Assistant Mar 2010 - Mar 2012
  Department of Civil Engineering  
  National University of Colombia  

Teaching Experience

Instructor of Numerical Methods Jan 2012 - Apr 2012
  School of Environmental Engineering  
  Universidad de Antioquia (Colombia)  
Instructor of Statics of Structures Feb 2011 - Apr 2012
  School of Environmental Engineering  
  Universidad de Antioquia (Colombia)  
Undergraduate Teaching Assistant and Instructor of Calculus Jul 2006 - Nov 2009
  School of Mathematics  
  National University of Colombia  

Publications

  Giraldo-Londoño, O., and Paulino, G. H. (2019). Fractional topology optimization of periodic multi-material viscoelastic microstructures with tailored energy dissipation. (under review).
  Giraldo-Londoño, O., Mirabella, L., Dalloro, L., and Paulino, G. H. (2019). Multi-material thermomechanical topology optimization with applications to additive manufacturing: Design of main composite structure and support structure. (under review).
  Vasconcelos da Senhora, F., Giraldo-Londoño, O., Menezes, I. F. M., and Paulino, G. H. (2019). Topology optimization with local stress constraints: An aggregation-free approach. (under review).
  Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2019). Fractional calculus derivation of a rate-dependent PPR-based cohesive fracture model: Theory, implementation, and numerical results. International Journal of Fracture, 216(1):1-29. (PDF)
  Giraldo-Londoño, O., Spring, D. W., Paulino, G. H., and Buttlar, W. G. (2018). An efficient mixed-mode rate-dependent cohesive fracture model using sigmoidal functions. Engineering Fracture Mechanics, 192:307-327. (PDF)
  Hill, B. C., Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2017). Inverse estimation of cohesive fracture properties of asphalt mixtures using an optimization approach. Experimental Mechanics, 57(4):637-648. (PDF)
  Monsalve-Giraldo, J.S., Giraldo-Londoño, O., Colorado-Urrea, G. J., and Aristizábal-Ochoa, J. D. (2017). Second-order analysis of an imperfect corroded tubular member on a two-parameter elastic foundation. Engineering Structures, 137:223-235. (View Online)
  Spring, D. W., Giraldo-Londoño, O., and Paulino, G. H. (2016). A study on the thermodynamic consistency of the Park-Paulino-Roesler (PPR) cohesive fracture model. Mechanics Research Communications, 78:100-109. (Appeared in the top most downloaded MRC artices in 2016). (PDF)
  Giraldo-Londoño, O., Monslave-Giraldo, J. S., and Aristizábal-Ochoa, J. D. (2015). Large-deflection and postbuckling of beam-columns with non-linear semi-rigid connections including shear and axial effects. International Journal of Nonlinear Mechanics, 77:85-95. (Appeared in Science Direct Top 25 hottest articles in 2015 and in the Most Downloaded NLM Articles in 2016 and 2017). (View Online)
  Giraldo-Londoño, O., and Aristizábal-Ochoa, J. D. (2014). Dynamic stability of slender columns with semi-rigid connections under periodic axial load: Theory. Dyna, 81(185):56-65. (View Online)
  Giraldo-Londoño, O., and Aristizábal-Ochoa, J. D. (2014). Dynamic stability of slender columns with semi-rigid connections under periodic axial load: Verification and examples. Dyna, 81(185):66-72. (View Online)
  Giraldo-Londoño, O., and Aristizábal-Ochoa, J. D. (2013). Axially restrained beam-column with initial imperfections and nonlinear end connections subject to high temperatures. Journal of Engineering Mechanics, 140(4):04014003. (View Online)

Invited Lectures

  "Fractional viscoelastic theory for modeling fracture of time- and rate-dependent media," Department of Civil and Environmental Engineering, University of Missouri, May, 2017.

Conference Proceedings and Presentations

  Giraldo-Londoño, O., Vasconcelos da Senhora, F., Menezes, I. F. M., and Paulino, G. H. (2019). "Topology optimization with local stress constraints: An aggregation-free approach," 2019 Topology Optimization Roundtable, March 11-12, 2019, Albuquerque, NM.
  Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2018). "Fractional viscoelastic mixed-mode fracture: A PPR-based rate-dependent cohesive zone model using fractional calculus," 10th European Solid Mechanics Conference (ESMC), July 2-6, 2018, Bologna, Italy.
  Giraldo-Londoño, O., and Paulino, G. H. (2018). "On topology optimization of periodic multi-material viscoelastic microstructures using a fractional viscoelastic material model," 10th European Solid Mechanics Conference (ESMC), July 2-6, 2018, Bologna, Italy.
  Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2017). "A novel mixed-mode rate-dependent cohesive zone model using fractional viscoelastic theory," Engineering Mechanics Institute (EMI) Conference 2017, June 4-7, 2017, San Diego, CA. Presented at the "Symposium in honor of Professor Zdeněk P. Bažant on the occasion of his 80th birthday (by invitation only)."
  Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2017). "A novel mixed-mode rate-dependent cohesive zone model using fractional viscoelastic theory," Engineering Mechanics Institute (EMI) International Conference 2017, March 19-22, 2017, Rio de Janeiro, Brazil.
  Giraldo-Londoño, O., and Paulino, G. H. (2017). "Fractional viscoelastic material design through topology optimization," Engineering Mechanics Institute (EMI) International Conference 2017, March 19-22, 2017, Rio de Janeiro, Brazil.
  Giraldo-Londoño, O., Paulino, G. H., and Buttlar, W. G. (2016). "A mixed-mode rate-dependent cohesive zone model using fractional viscoelasticity," Engineering Mechanics Institute (EMI) Conference 2016, March 22-25, 2016, Nashville, TN.
  Giraldo-Londoño, O., Hill, B., Paulino, G. H., and Buttlar, W. G. (2015). "Inverse Estimation of Cohesive Fracture Properties of Asphalt Mixtures Using Nonlinear Optimization," Fifteenth Pan-American Congress of Applied Mechanics (PACAM), May 18-21, 2015, Champaign, IL.
  Steinberg, E., Ubbing, J., Giraldo-Londoño, O., and Semendary, A. (2014). "Parametric analysis of adjacent prestressed concrete box-beams with UHPC-dowel shear keys," 2014 PCI Convention and National Bridge Conference, September 6-9, 2014, National Harbor, MD.
  Steinberg, E., Huffman J., Ubbing, J., and Giraldo-Londoño, O. (2013). "Finite element modeling of adjacent prestressed concrete box beams," 2013 PCI Convention and National Bridge Conference, September 21-24, 2013, Grapevine, TX.

Awards and Honors

COLFUTURO Scholar 2012-2014
Young Researcher Award, awarded by CONLCIENCIAS (Colombian equivalent to NSF) 2010-2011
Emilio Robledo Award (best undergraduate student award), awarded by Colombian Society of Engineers 2009
Top 10 highest scores (ranked 7th) in ECAES test (Colombian equivalent to FE exam) nationwide 2009

Ad Hoc Reviewer

Journal of the Mechanics and Physics of Solids 2019-Present
Computers and Structures 2019-Present
Journal of Building Engineering 2019-Present
Journal of Optimization Theory and Applications 2019-Present
Computer Methods in Applied Mechanics and Engineering 2018-Present
Journal of Wood Science and Technology 2018-Present
Journal of Engineering Fracture Mechanics 2018-Present
Journal of Applied Mechanics 2017-Present
Journal of Thin-Walled Structures 2017-Present
Journal of the Brazilian Society of Mechanical Sciences and Engineering 2017-Present
Journal of Engineering Structures 2017-Present
Simulation: Transactions of the Society for Modeling and Simulation International 2017-Present
Road Materials and Pavement Design 2016-Present
Materials & Design 2016-Present
International Journal of Solids and Structures 2016-Present
International Journal of Fracture 2016-Present
Journal of Engineering Mechanics 2016-Present
Mechanics Research Communications 2015-Present

Skills

Matlab, Abaqus, LS-DYNA, SAP2000, ETABS, Fortran, Adobe Illustrator, AutoCad, Mathcad, and Mathematica.
Academic and communicative fluency in English and Spanish, and basic communicative skills in Portuguese.

Leadership and Community Activities

Latino Organization of Graduate Students (LOGRAS) at Georgia Tech (Treasurer) Mar 2018 - Present
EIP LTDA (Colombia) - measured structural parameters and obtained seismic vulnerability maps in underprivileged neighborhoods of Medellin, Colombia (Volunteer) Dec 2010 - Jan 2011