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Journal Articles

A Study on the Dynamics of Spatial Mechanisms With Frictional Spherical Clearance Joints

Filipe Marques, Fernando Isaac, Nuno Dourado, António Pedro Souto, Paulo Flores, Hamid M. Lankarani
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. September 2017, 12(5): 051013.
Paper No: CND-16-1414
https://doi.org/10.1115/1.4036480
Published Online: May 4, 2017
View Article titled, A Study on the Dynamics of Spatial Mechanisms With Frictional Spherical Clearance Joints
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Topics: Clearances (Engineering), Friction, Dynamics (Mechanics), Modeling, Multibody systems
Proceedings Papers

A Study on the Dynamics of Spatial Mechanisms With Frictional Spherical Clearance Joints

Filipe Marques, Fernando Isaac, Nuno Dourado, António Pedro Souto, Paulo Flores, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2016, Volume 6: 12th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V006T09A012, August 21–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DETC2016-59089
https://doi.org/10.1115/DETC2016-59089
View Paper titled, A Study on the Dynamics of Spatial Mechanisms With Frictional Spherical Clearance Joints
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Topics: Clearances (Engineering), Dynamics (Mechanics), Friction, Coulomb's law, Dynamic modeling, Energy dissipation, Equations of motion, Multibody systems, System dynamics
Journal Articles

Influence of the Hip Joint Modeling Approaches on the Kinematics of Human Gait

João Costa, Joaquim Peixoto, Pedro Moreira, António Pedro Souto, Paulo Flores, Hamid M. Lankarani
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2016, 138(3): 031201.
Paper No: TRIB-15-1150
https://doi.org/10.1115/1.4031988
Published Online: January 29, 2016
View Article titled, Influence of the Hip Joint Modeling Approaches on the Kinematics of Human Gait
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Topics: Bearings, Clearances (Engineering), Kinematics, Modeling, Multibody systems, Viscosity, Dynamics (Mechanics), Fluids, Cycles, Simulation
Proceedings Papers

Effect of Variation of Link Lengths and Stiffness on the Gearing Ratio of a Four Bar Mechanism With Application to Aircraft Trim Tabs

Abey Dessalegn, Yimesker Yihun, Joao Paulo Flores Fernandes, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2015, Volume 5B: 39th Mechanisms and Robotics Conference, V05BT08A061, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-46054
https://doi.org/10.1115/DETC2015-46054
View Paper titled, Effect of Variation of Link Lengths and Stiffness on the Gearing Ratio of a Four Bar Mechanism With Application to Aircraft Trim Tabs
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Topics: Aircraft, Stiffness, Linkages, Actuators, Airfoils, Algebra, Design, End effectors, Geometry, Kinematic chains
Proceedings Papers

A Medical Device for Patellofemoral Disorders: Design and Development

Ana Leal, Rogério Pereira, Hélder Pereira, João Paulo Flores Fernandes, Filipe Silva, João Espregueira-Mendes
Proc. ASME. IDETC-CIE2015, Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices, V003T14A016, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-46343
https://doi.org/10.1115/DETC2015-46343
View Paper titled, A Medical Device for Patellofemoral Disorders: Design and Development
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Topics: Design, Medical devices, Imaging, Knee, Rotation
Proceedings Papers

Influence of the Hip Joint Modeling Approaches on the Kinematics of Human Gait

João Costa, Joaquim Peixoto, Pedro Moreira, António Pedro Souto, João Paulo Flores Fernandes, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2015, Volume 6: 11th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V006T10A001, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-46340
https://doi.org/10.1115/DETC2015-46340
View Paper titled, Influence of the Hip Joint Modeling Approaches on the Kinematics of Human Gait
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Topics: Kinematics, Modeling, Multibody systems, Bone, Dynamics (Mechanics), Engineering simulation, Equations of motion, Simulation
Journal Articles

A Computational Analysis of Squeaking Hip Prostheses

Ehsan Askari, Paulo Flores, Danè Dabirrahmani, Richard Appleyard
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Technical Briefs
J. Comput. Nonlinear Dynam. March 2015, 10(2): 024502.
Paper No: CND-13-1273
https://doi.org/10.1115/1.4028109
Published Online: March 1, 2015
View Article titled, A Computational Analysis of Squeaking Hip Prostheses
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Topics: Friction, Hip joint prostheses, Clearances (Engineering), Trajectories (Physics), Stick-slip, Multibody dynamics
Proceedings Papers

An Overview of Several Formulations for Dry and Lubricated Revolute Joint Clearances in Planar Rigid-Multi-Body Mechanical Systems

Paulo Flores, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2014, Volume 6: 10th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V006T10A021, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-34399
https://doi.org/10.1115/DETC2014-34399
View Paper titled, An Overview of Several Formulations for Dry and Lubricated Revolute Joint Clearances in Planar Rigid-Multi-Body Mechanical Systems
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Topics: Clearances (Engineering), Computer simulation, Dynamic response, Engineering simulation, Equations of motion, Friction, Kinematics, Lubrication, Modeling, Multibody systems
Journal Articles

A Lookup-Table-Based Approach for Spatial Analysis of Contact Problems

Margarida Machado, Paulo Flores, Jorge Ambrósio
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. October 2014, 9(4): 041010.
Paper No: CND-13-1175
https://doi.org/10.1115/1.4026894
Published Online: July 11, 2014
View Article titled, A Lookup-Table-Based Approach for Spatial Analysis of Contact Problems
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Topics: Algorithms, Contact mechanics, Shapes, Simulation, Storage, Multibody systems, Computation, Surface preparation, Materials properties, Multibody dynamics
Proceedings Papers

A DOE- and Kriging-Based Model for Studying on the Dynamics of Multibody Mechanical Systems With Revolute Joint Clearance

Zhenhua Zhang, Liang Xu, Paulo Flores, Hamid M. Lankarani
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A090, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64667
https://doi.org/10.1115/IMECE2013-64667
View Paper titled, A DOE- and Kriging-Based Model for Studying on the Dynamics of Multibody Mechanical Systems With Revolute Joint Clearance
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Topics: Clearances (Engineering), Dynamics (Mechanics)
Proceedings Papers

Design of a New Knee Orthosis Locking System

Pedro Moreira, Pedro Ramôa, Paulo Flores
Proc. ASME. IMECE2013, Volume 3A: Biomedical and Biotechnology Engineering, V03AT03A065, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64276
https://doi.org/10.1115/IMECE2013-64276
View Paper titled, Design of a New Knee Orthosis Locking System
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Topics: Design, Knee, Orthotics, Sensors, Locks (Waterways), Engineering prototypes, Muscle
Journal Articles

A Kriging Model for Dynamics of Mechanical Systems With Revolute Joint Clearances

Zhenhua Zhang, Liang Xu, Paulo Flores, Hamid M. Lankarani
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. July 2014, 9(3): 031013.
Paper No: CND-13-1195
https://doi.org/10.1115/1.4026233
Published Online: February 13, 2014
View Article titled, A Kriging Model for Dynamics of Mechanical Systems With Revolute Joint Clearances
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Topics: Clearances (Engineering), Design, Stiffness, Genetic algorithms
Proceedings Papers

A Lookup Table-Based Approach for Spatial Analysis of Contact Problems

Maria Margarida Machado, Paulo Flores, Jorge Ambrósio
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A048, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-13041
https://doi.org/10.1115/DETC2013-13041
View Paper titled, A Lookup Table-Based Approach for Spatial Analysis of Contact Problems
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Topics: Computation, Contact mechanics, Engineering simulation, Materials properties, Shapes, Simulation
Proceedings Papers

Comparison of Different Methods to Control Constraints Violation in Forward Multibody Dynamics

Paulo Flores, Parviz E. Nikravesh
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A028, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-12591
https://doi.org/10.1115/DETC2013-12591
View Paper titled, Comparison of Different Methods to Control Constraints Violation in Forward Multibody Dynamics
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Topics: Multibody dynamics
Proceedings Papers

Influence of the Lubrication Model on the Dynamic Response of Mechanical Systems

Paulo Flores
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A042, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-12053
https://doi.org/10.1115/DETC2013-12053
View Paper titled, Influence of the Lubrication Model on the Dynamic Response of Mechanical Systems
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Topics: Dynamic response, Fluid-dynamic forces, Lubrication, Journal bearings, Engineering simulation, Equations of motion, Simulation, Uncertainty
Proceedings Papers

Computational and Experimental Analysis of Mechanical Systems With Revolute Clearance Joints

Sony Cheriyan, Paulo Flores, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A045, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-12595
https://doi.org/10.1115/DETC2013-12595
View Paper titled, Computational and Experimental Analysis of Mechanical Systems With Revolute Clearance Joints
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Topics: Clearances (Engineering), Experimental analysis
Journal Articles

A Computational Approach for Cam Size Optimization of Disc Cam-Follower Mechanisms With Translating Roller Followers

Paulo Flores
Journal: Journal of Mechanisms and Robotics
Publisher: ASME
Article Type: Research-Article
J. Mechanisms Robotics. November 2013, 5(4): 041010.
Paper No: JMR-13-1031
https://doi.org/10.1115/1.4025026
Published Online: September 11, 2013
View Article titled, A Computational Approach for Cam Size Optimization of Disc Cam-Follower Mechanisms With Translating Roller Followers
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Topics: Disks, Optimization, Pressure, Rollers, Design, Cams
Proceedings Papers

An Overview on Continuous Contact Force Models for Multibody Dynamics

Paulo Flores, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2012, Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies, 31-37, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70393
https://doi.org/10.1115/DETC2012-70393
View Paper titled, An Overview on Continuous Contact Force Models for Multibody Dynamics
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Topics: Multibody dynamics, Complex systems, Damping, Dynamic response, Engineering simulation, Multibody systems, Simulation
Proceedings Papers

Dynamic Response of Multibody Systems With Multiple Clearance Joints

Paulo Flores, Hamid M. Lankarani
Proc. ASME. IDETC-CIE2011, Volume 4: 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A and B, 13-22, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47224
https://doi.org/10.1115/DETC2011-47224
View Paper titled, Dynamic Response of Multibody Systems With Multiple Clearance Joints
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Topics: Clearances (Engineering), Dynamic response, Multibody systems
Proceedings Papers

A Methodology to Detect the Precise Instant of Contact in Multibody Dynamics

Paulo Flores
Proc. ASME. IDETC-CIE2011, Volume 4: 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A and B, 147-156, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47081
https://doi.org/10.1115/DETC2011-47081
View Paper titled, A Methodology to Detect the Precise Instant of Contact in Multibody Dynamics
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Topics: Multibody dynamics