Results 261 to 270 of about 1,917,813 (302)
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Unilateral Contact with Bounces
1995The aim of the study is to take in interest in the dynamic behaviour of rigid body systems in unilateral contact with friction. The friction law is the law of Coulomb. Which are the parameters which determine the transition between a smooth motion and a motion with collisions ?
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Nonconvex Unilateral Contact Problems
1992We consider a three-dimensional linear elastic body subjected to nonmonotone multivalued boundary conditions which are obtained from nonconvex superpotentials (cf. Sect. 1.3.3). The procedure which we follow remains valid also for shells, plates, beams etc.
Heinz Antes +1 more
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On Unilateral Contact Between Rigid Masonry Blocks
2020In this contribution we discuss a new framework for the analysis of the bearing capacity of masonry structures, modeled as assemblies of rigid blocks, which allows to correctly take into account the influence of foundation settlements. The crack pattern at failure and the associated mechanism are described by means of a proper treatment of unilateral ...
Tralli A. +3 more
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Analysis of Unilateral Contact Problem
Journal of the Engineering Mechanics Division, 1976In the analysis of structures, one sometimes encounters situations in which the boundary presents a unilateral contact with a support. The term, unilateral contact, means that it is not known, a priori, which part of the boundary works itself loose from the support and which part remains in contact with it.
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Multibody Dynamics with Unilateral Contacts
1996THEORY. Multibody Kinematics. Dynamics of Rigid Body Systems. Contact Kinematics. Multiple Contact Configurations. Detachment and Stick-Slip Transitions. Frictionless Impacts by Newton's Law. Impacts with Friction by Poisson's Law. The Corner Law of Contact Dynamics. APPLICATIONS. Applications with Discontinuous Force Laws.
Friedrich Pfeiffer, Christoph Glocker
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Asymptotic numerical methods for unilateral contact
International Journal for Numerical Methods in Engineering, 2006New algorithms based upon the asymptotic numerical method (ANM) are proposed to solve unilateral contact problems. ANM leads to a representation of a solution path in terms of series or Pade approximants. To get a smooth solution path, a hyperbolic relation between contact forces and clearance is introduced.
W. Aggoune, H. Zahrouni, M. Potier-Ferry
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Stability in Unilateral Contact Problems with Dry Friction
2013We discuss stability in the case of systems with unilateral contact and Coulomb friction. Classical stability results for dynamical systems concern perturbations of the initial data in a classical phase space. Here we establish results concerning the trajectories issued from a perturbation of the external forces.
Pratt, Elaine +2 more
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Unilateral Contacts in Machine Dynamics
1999Machine dynamics offers a great variety of contact problems ranging from impacts to gliding and rolling. Typical examples are cam follower and cam roller devices as well as all kinds of gears. There are numerous papers in the literature devoted to one or the other machine design with contact.
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Contact Unilateral Avec Adherence
1985Considerons du papier adhesif colle sur une table. Il faut exercer un effort vertical notable pour le decoller : difference importante avec les problemes de contact unilateral classique ou le decollement se produit des que l’on surmonte la pesanteur. L’effort supplementaire sert a vaincre ce que l’on appelle les effets de l’adherence.
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Dual Methods for Unilateral Contact Problems
Civil-Comp Proceedings, 2009Kuss, François, Lebon, Frédéric
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