His scientific interests lie mostly in Plasticity, Finite element method, Constitutive equation, Classical mechanics and Geotechnical engineering. The study incorporates disciplines such as Geometry, Elastic modulus, Deformation bands, Shear modulus and Soil mechanics in addition to Plasticity. His studies in Finite element method integrate themes in fields like Slip, Mathematical analysis and Augmented Lagrangian method.
Ronaldo I. Borja has researched Constitutive equation in several fields, including Stress–strain curve and Nonlinear system. His work deals with themes such as Effective stress, Mechanics, Finite strain theory and Tensor, which intersect with Classical mechanics. The concepts of his Geotechnical engineering study are interwoven with issues in Solid mechanics, Deformation, Creep, Mathematical model and Fluid dynamics.
Ronaldo I. Borja mostly deals with Finite element method, Geotechnical engineering, Mechanics, Plasticity and Constitutive equation. His Finite element method research is multidisciplinary, incorporating perspectives in Slip, Geometry and Mathematical analysis. His Geotechnical engineering study integrates concerns from other disciplines, such as Fluid dynamics, Creep, Mathematical model and Nonlinear system.
His Mechanics research is multidisciplinary, relying on both Porosity, Shear band and Deformation. In his study, Cauchy stress tensor is inextricably linked to Stress, which falls within the broad field of Plasticity. His biological study spans a wide range of topics, including Granular material, Finite strain theory, Classical mechanics and Deformation.
His primary scientific interests are in Mechanics, Porosity, Poromechanics, Geotechnical engineering and Porous medium. The Mechanics study combines topics in areas such as Tensor, Stress, Classical mechanics and Plasticity. His Classical mechanics study combines topics in areas such as First law of thermodynamics, Shear band, Constitutive equation and Bifurcation.
Ronaldo I. Borja interconnects Effective stress, Crystal plasticity, Finite element method and Deformation in the investigation of issues within Porosity. His Finite element method research incorporates themes from Rate of convergence, Mass balance and Finite volume method. His Geotechnical engineering research integrates issues from Composite material, Nanoindentation and Viscoplasticity.
Porosity, Mechanics, Geotechnical engineering, Shear band and Bifurcation are his primary areas of study. Much of his study explores Mechanics relationship to Classical mechanics. His Classical mechanics study incorporates themes from Isochoric process, First law of thermodynamics, Finite strain theory and Plasticity.
His study in Plasticity is interdisciplinary in nature, drawing from both Dislocation creep, Cauchy elastic material, Constitutive equation and Cauchy stress tensor. His Geotechnical engineering research includes elements of Indentation and Composite material. Porous medium is closely attributed to Finite element method in his research.
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Geological and mathematical framework for failure modes in granular rock
Atilla Aydin;Ronaldo I. Borja;Peter Eichhubl.
Journal of Structural Geology (2006)
Cam-Clay plasticity. Part V: A mathematical framework for three-phase deformation and strain localization analyses of partially saturated porous media
Ronaldo I. Borja.
Computer Methods in Applied Mechanics and Engineering (2004)
Cam-Clay plasticity, part I: implicit integration of elastoplastic constitutive relations
R. I. Borja;S. R. Lee.
Applied Mechanics and Engineering (1990)
Stabilized low-order finite elements for coupled solid-deformation/fluid-diffusion and their application to fault zone transients
Joshua A. White;Ronaldo I. Borja.
Computer Methods in Applied Mechanics and Engineering (2008)
Plasticity: Modeling & Computation
Ronaldo I. Borja.
(2013)
Cam-Clay plasticity, Part II: implicit integration of constitutive equation based a nonlinear elastic stress predictor
Ronaldo I. Borja.
Applied Mechanics and Engineering (1991)
On the numerical integration of three-invariant elastoplastic constitutive models
Ronaldo I. Borja;Kossi M. Sama;Pablo F. Sanz.
Computer Methods in Applied Mechanics and Engineering (2003)
A finite element model for strain localization analysis of strongly discontinuous fields based on standard Galerkin approximation
Ronaldo I. Borja.
Computer Methods in Applied Mechanics and Engineering (2000)
On the mechanical energy and effective stress in saturated and unsaturated porous continua
Ronaldo I. Borja.
International Journal of Solids and Structures (2006)
Cam-Clay plasticity part III: Extension of the infinitesimal model to include finite strains
Ronaldo I. Borja;Claudio Tamagnini.
Computer Methods in Applied Mechanics and Engineering (1998)
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