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Michael Ortiz
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Journal Articles

Ice Penetration by a Bluff-Body Melting Probe

Kerstin Weinberg, Michael Ortiz
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. June 2020, 87(6): 061003.
Paper No: JAM-19-1615
https://doi.org/10.1115/1.4046633
Published Online: March 28, 2020
View Article titled, Ice Penetration by a Bluff-Body Melting Probe
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Topics: Ice, Melting, Probes, Weight (Mass), Water, Energy dissipation
Journal Articles

Size Scaling of Plastic Deformation in Simple Shear: Fractional Strain-Gradient Plasticity and Boundary Effects in Conventional Strain-Gradient Plasticity

Carl F. O. Dahlberg, Michael Ortiz
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2020, 87(3): 031017.
Paper No: JAM-19-1556
https://doi.org/10.1115/1.4045872
Published Online: January 14, 2020
View Article titled, Size Scaling of Plastic Deformation in Simple Shear: Fractional Strain-Gradient Plasticity and Boundary Effects in Conventional Strain-Gradient Plasticity
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Proceedings Papers

Atomistic Simulation of Hydrogen Diffusion in Palladium Nanoparticles Using a Diffusive Molecular Dynamics Method

Xingsheng Sun, Pilar Ariza, Michael Ortiz, Kevin G. Wang
Proc. ASME. IMECE2017, Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Structural Health Monitoring and Prognosis, V009T12A026, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-71400
https://doi.org/10.1115/IMECE2017-71400
View Paper titled, Atomistic Simulation of Hydrogen Diffusion in Palladium Nanoparticles Using a Diffusive Molecular Dynamics Method
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Topics: Diffusion (Physics), Hydrogen, Molecular dynamics methods, Nanoparticles, Palladium, Simulation, Absorption, Atoms, Deformation, Dynamics (Mechanics)
Journal Articles

Experimental Validation of Metaconcrete Blast Mitigation Properties

Deborah Briccola, Michael Ortiz, Anna Pandolfi
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research-Article
J. Appl. Mech. March 2017, 84(3): 031001.
Paper No: JAM-16-1480
https://doi.org/10.1115/1.4035259
Published Online: December 1, 2016
View Article titled, Experimental Validation of Metaconcrete Blast Mitigation Properties
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Topics: Cements (Adhesives), Concretes, Mortar, Resonance, Sands, Signals, Gravel, Computers, Transducers, Casting
Journal Articles

Optimal Control Strategies for Robust Certification

Sigrid Leyendecker, Leonard J. Lucas, Houman Owhadi, Michael Ortiz
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research Papers
J. Comput. Nonlinear Dynam. July 2010, 5(3): 031008.
https://doi.org/10.1115/1.4001375
Published Online: May 18, 2010
View Article titled, Optimal Control Strategies for Robust Certification
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Topics: Failure, Optimal control, Probability, Robots
Proceedings Papers

Discrete Mechanics and Optimal Control for Constrained Multibody Dynamics

Sigrid Leyendecker, Sina Ober-Blo¨baum, Jerrold E. Marsden, Michael Ortiz
Proc. ASME. IDETC-CIE2007, Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 623-632, September 4–7, 2007
Publisher: American Society of Mechanical Engineers
Paper No: DETC2007-34574
https://doi.org/10.1115/DETC2007-34574
View Paper titled, Discrete Mechanics and Optimal Control for Constrained Multibody Dynamics
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Topics: Multibody dynamics, Optimal control, Momentum, Algorithms, Computation, D'Alembert's principle, Dimensions, Energy dissipation, Mechanical structures, Wheels
Proceedings Papers

Finite-Element Simulation of Thin-Shell Fracture and Fragmentation

Fehmi Cirak, Michael Ortiz, Anna Pandolfi
Proc. ASME. IMECE2004, Computers and Information in Engineering, 129-137, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-59125
https://doi.org/10.1115/IMECE2004-59125
View Paper titled, Finite-Element Simulation of Thin-Shell Fracture and Fragmentation
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Topics: Finite element analysis, Fracture (Materials), Simulation, Thin shells, Shells, Aluminum plate, Die cutting, Failure, Finite element methods, Hinges