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Error analysis of forced discrete mechanical systems
(American Institute of Mathematical Sciences, 2021-12)
The purpose of this paper is to perform an error analysis of the variational integrators of mechanical systems subject to external forcing. Es- sentially, we prove that when a discretization of contact order r of the La- ...
Collisions between two nonlinear deformable bodies stated within Continuum Mechanics
(Pergamon-Elsevier Science Ltd, 2010-06)
The study of the interaction between two deformable bodies that collide is of great interest since desired effects, as a stable contact, or undesired ones, as the failure of a mechanical part, can be predicted. In this ...
Atomic force microscopy nano-indentation for testing mechanical properties in thin films
(Elsevier, 2019-07)
We study the mechanical properties of Cu thin films on Si (100) by performing nano-indentation using an atomic force microscopy. Cu films with thickness of 0.3 μm, 1 μm and 2 μm were analyzed. Area profile studies let us ...
Finite strain model for contact interface in forming processes
(Wiley, 2006-12)
A phenomenological rate and state-variable friction law for the continuous sliding under lubricated and dry conditions, asit occurs in metal forming processes, is presented in this paper. The contact model is developed ...
A nonsmooth frictional contact formulation for multibody system dynamics
(John Wiley & Sons Ltd, 2020-08-07)
We present a new node-to-face frictional contact element for the simulation of the nonsmooth dynamics of systems composed of rigid and flexible bodies connected by kinematic joints. The equations of motion are integrated ...
Extended Hamilton-Jacobi theory, contact manifolds, and integrability by quadratures
(American Institute of Physics, 2020-01)
A Hamilton-Jacobi theory for general dynamical systems, defined on fibered phase spaces, has been recently developed. In this paper, we shall apply such a theory to contact Hamiltonian systems, as those appearing in ...
Optimization of the rolling contact fatigue (RCF) performance of carbidic austempered ductile iron (CADI)
(Elsevier, 2020-03)
Austempered ductile iron (ADI) has a good combination of mechanical properties and castability allowing it to replace forged steels while offering lower costs. CADI is thought to improve ADI's abrasion resistance by the ...
Liquid-polymer triboelectricity: Chemical mechanisms in the contact electrification process
(Royal Society of Chemistry, 2020-08)
The liquid-polymer contact electrification between sliding water drops and the surface of polytetrafluoroethylene (PTFE) was studied as function of pH and ionic strength of the drop as well as ambient relative humidity ...
Tapped granular packings described as complex networks
(Taylor and Francis, 2018)
Contact network topology in tapped granular media
(American Physical Society, 2017)