Richard A. Regueiro

  • Professor
  • GEOTECHNICAL ENGINEERING & GEOMECHANICS
  • ENGINEERING SCIENCE
  • MATERIALS SCIENCE & ENGINEERING
Address

Office: ECOT 421

Education

  • Ph.D., Civil and Environmental Engineering, Stanford University, 1998
  • S.M., Aeronautics and Astronautics, Massachusetts Institute of Technology, 1993
  • B.S.E., Civil Engineering Systems, University of Pennsylvania, 1991

Honors and Distinctions

  • Research Development Award, Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, 2012
  • R&D 100 Award, R&D Magazine, 2000
  • Sidney Shore Award, University of Pennsylvania, 1991

Professional Affiliations

  • Engineering Mechanics Institute (EMI)
  • Biomedical Engineering

Interests

  • Computational multiscale mechanics for porous and particulate materials.
  • Mechanics of single phase (dry) and multiphase (partially-saturated and saturated, multi-constituent) porous materials, such as geomaterials (soil, rock), concrete, and soft biological tissues.
  • Damaged polycrystalline metals.
  • Generalized continuum theories for multiscale modeling of inelastic deformation.
  • Applications include modeling geotechnical, geological, and structural engineering failures, high strain rate loading of polycrystalline metals and soils, and visco-poroelastic response of ocular tissues and other biological tissues.

Latest Publications

  1. Irwin, Z.T., Clayton, J.D., Regueiro, R.A. (2026) Characteristics of fluid-solid interaction constitutive models within poroelastodynamics at higher strain-rates and large deformations. Int. J. Num. Methods Eng., 127(10): e70347
     
  2. Schmid, A., Jensen, E., Di Gioacchino, F., Javadzaeh, P., Peterson, N., Becker, C.G., Lu, H., Pourahmadian, F., Clarke, A., Doostan, A., Regueiro, R. (2025) Calibrating a Finite-strain Phase-field Model of Fracture for Bonded Granular Materials with Uncertainty Quantification.  Journal of Applied Physics 138:234903
     
  3. Jadaan, D., Rimsza, J., Jones, R.E., Regueiro, R.A. (2024) Poromechanical cohesive interface element with combined mode I-II cohesive zone elastoplasticity for simulating fracture in fluid-saturated porous media, Computers & Structures, 305:107554
     
  4. Irwin, Z.T., Clayton, J.D., Regueiro, R.A. (2024) A large deformation multiphase continuum mechanics model for shock loading of soft porous materials, Int. J. Num. Methods Eng. 125(6):1-34
     
  5. Miller, N.A., Regueiro, R.A., Shahabi, F., Bishop, J.E. (2022) A micromorphic filter for determining stress and deformation measures from direct numerical simulations of lower length scale behavior.  Int. J. Num. Methods Eng., 123(17):3879-3921
     
  6. Yan, B., Regueiro, R.A. (2021) Influence of Particle Shape on Microstructure of Granular Materials under Gravity. ASCE Journal of Engineering Mechanics 147(11): 04021102
     
  7. Yan, B., Regueiro, R.A. (2019) Three-dimensional discrete element method parallel computation of Cauchy stress distribution over granular materials, Int. J. Numer. Anal. Methods Geomech. 43(5):974-1004
     
  8. Bennett, K.C., Regueiro, R.A., Luscher, D.J. (2019) Anisotropic finite hyper-elastoplasticity of geomaterials with Drucker-Prager/Cap type constitutive model formulation, International Journal of Plasticity 123:224-250
     
  9. Yan, B., Regueiro, R.A. (2019) Definition and symmetry of averaged stress tensor in granular media and its 3D DEM inspection under static and dynamic conditions, International Journal of Solids and Structures 161:243-266
     
  10. Zhang, B., Regueiro, R.A., Druckrey, A.M., Alshibli, K.  (2018) Construction of poly-ellipsoidal grain shapes from SMT imaging on sand, and the development of a new DEM contact detection algorithm. Eng. Comput. 35(2):733-771