Exploració per tema "Classificació AMS::70 Mechanics of particles and systems::70G General models, approaches, and methods"
Ara es mostren els items 1-14 de 14
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A text-mining approach to assess the failure condition of wind turbines using maintenance service history
(2019-05-23)
Article
Accés obertDetecting and determining which systems or subsystems of a wind turbine have more failures is essential to improve their design, which will reduce the costs of generating wind power. Two of the most critical failures, the ... -
Anisotropic microsphere-based approach to damage in soft fibered tissue
(2012-05)
Article
Accés obertAn anisotropic damage model for soft fibered tissue is presented in this paper, using a multi-scale scheme and focusing on the directionally dependent behavior of these materials. For this purpose, a micro-structural or, ... -
Application of the forces' method in dynamic systems
(2007-10-11)
Article
Accés obertWe present here some applications of the Forces's method in dynamic systems. In particular, we consider the problem of the approximation of the trajectories of a conservative system of point masses by means of the minimization ... -
Constrained Lagrangian dissipative contact dynamics
(2021-12-28)
Article
Accés obertWe show that the contact dynamics obtained from the Herglotz variational principle can be described as a constrained nonholonomic or vakonomic ordinary Lagrangian system depending on a dissipative variable with an adequate ... -
Constraint algorithm for extremals in optimal control problems
(2007-07-27)
Article
Accés obertA characterization of different kinds of extremals of optimal control problems is given if we take an open control set. A well known constraint algorithm for implicit differential equations is adapted to the study of ... -
Geometric Hamilton-Jacobi theory for nonholonomic dynamical systems
(2009-08-14)
Report de recerca
Accés obertThe geometric formulation of Hamilton--Jacobi theory for systems with nonholonomic constraints is developed, following the ideas of the authors in previous papers. The relation between the solutions of the Hamilton--Jacobi ... -
Higher-order contact mechanics
(Elsevier, 2021-02-01)
Article
Accés obertWe present a complete theory of higher-order autonomous contact mechanics, which allows us to describe higher-order dynamical systems with dissipation. The essential tools for the theory are the extended higher-order tangent ... -
On some aspects of the geometry of non integrable distributions and applications
(American Institute of Mathematical Sciences, 2018-12-01)
Article
Accés obertWe consider a regular distribution D in a Riemannian manifold (M, g). The LeviCivita connection on (M, g) together with the orthogonal projection allow to endow the space of sections of D with a natural covariant derivative, ... -
Parameter identification of large-scale magnetorheological dampers in a benchmark building
(2009)
Text en actes de congrés
Accés obertMagnetorheological (MR) dampers are devices that can be use d for vibration re- duction in structures. However, to use these devices in an ef fective way, a precise modeling is required. In this sense, in this paper we ... -
Safe trajectory of a piece moved by a robot
(Springer, 2023-07-12)
Capítol de llibre
Accés obertIn this work, we propose a mathematical model for a physical problem based on the movement of a metal piece held by a robot. Using the principles of Kirchoff plate theory, a set of equations determining stresses and ... -
Skinner-Rusk unified formalism for optimal control systems and applications
(2007-05-15)
Article
Accés obertA geometric approach to time-dependent optimal control problems is proposed. This formulation is based on the Skinner and Rusk formalism for Lagrangian and Hamiltonian systems. The corresponding unified formalism developed ... -
Skinner–Rusk formalism for k-contact systems
(2022-02-01)
Article
Accés obertIn previous papers, a geometric framework has been developed to describe non-conservative field theories as a kind of modified Lagrangian and Hamiltonian field theories. This approach is that of k-contact Hamiltonian ... -
Strict abnormal extremals in nonholonomic and kinematic control systems
(2008-06)
Article
Accés obertIn optimal control problems, there exist different kinds of extremals, that is, curves candidates to be solution: abnormal, normal and strictly abnormal. The key point for this classification is how those extremals ... -
Structural aspects of Hamilton–Jacobi theory
(2016-02-01)
Article
Accés obertIn our previous papers [11, 13] we showed that the Hamilton–Jacobi problem can be regarded as a way to describe a given dynamics on a phase space manifold in terms of a family of dynamics on a lower-dimensional manifold. ...