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Spinning rigid bodies driven by orbital forcing: the role of dry friction
(2022-01-01)
A “circular orbital forcing” makes a chosen point on a rigid body follow a circular motion while the body spins freely around that point. We investigate this problem for the planar motion of a body subject to dry friction. ...
A note on the use of Melnikov's chaos prediction criterion: results of a friction-driven self-excited vibrating system
(Institute of Electrical and Electronics Engineers (IEEE), 2000-01-01)
Stick-slip friction: A Monte Carlo study
(Elsevier, 2016-10)
The aim of this study is to analyze the underling molecular mechanics of the stick-slip phenomenon in confined thin films, and its dependence on parameters such as sliding velocity, load, time and temperature. The study ...
An implicit/explicit integration scheme to increase computability of non-linear material and contact/friction problems
(Elsevier Science Sa, 2008-12)
An implicit/explicit integration scheme for non-linear constitutive models is presented. It aims at providing additional computability to those solid mechanics problems were robustness is an important issue, i.e. material ...
Modeling of a linear motor feed drive including pre-rolling friction and aperiodic cogging and ripple
(Springer, 2014-04)
This work addresses the systematic modeling of a linear feed drive based on a linear synchronous motor, a helpful step in control design for precise machine tools using linear motors. The model considers the electrical ...
Tool geometry optimization in friction stir spot welding of Al-steel joints
(Elsevier, 2017-04)
The necessity to reduce the weight of transport structures, such as cars and airplanes, has become more important due to gas emission regulations. In this regard, the use of hybrid structures made of steel and aluminum is ...
Numerical solutions for frictional contact problems based on a mortar algorithm with an augmented Lagrangian technique
(Springer, 2015-12)
This work presents a frictional contact formulation to solve three-dimensional contact problems with large finite displacements. The kinematic description of the contacting bodies is defined by using a mortar approach. The ...
Drill-string horizontal dynamics with uncertainty on the frictional force
(Elsevier, 2013-01)
This paper analyzes the dynamics of a horizontal drill-string. In this dynamics, the frictional forces between the column and the borehole are relevant and uncertain. A stochastic model is proposed for the frictional ...
Computational modeling of 2D frictional contact problems based on the use of coupling finite elements and combined contact/friction damage constitutive model
(2022-02-01)
This work proposes a new approach to describe 2D frictional contact problems based on the use of coupling finite elements (CFEs) and a combined contact/friction damage constitutive model. This technique is able to establish ...
Rheology and fluid dynamics properties of sugarcane juice
(2011-02-15)
The sugarcane juice is a relatively low-cost agricultural resource, abundant in South Asia, Central America and Brazil, with vast applications in producing ethanol biofuel. In that way, a good knowledge of the rheological ...