Results 231 to 240 of about 3,227 (267)

Singularities of the nodal set of segregated configurations

Calculus of Variations and Partial Differential Equations, 2015
This study is motivated by the segregating behaviour, that is \(u_{i,\kappa} u_{j,\kappa} \to 0\) as \(\kappa \to + \infty\) (\(i\neq j\)), of uniformly bounded solutions to the singularly perturbed elliptic system \( -\Delta u_i=f_i(u_i)-\kappa u_i \sum_{j\neq i}g_{ij}(u_j),\) \(u_i\geq 0\), in an open, bounded smooth domain of \(\mathbb{R}^n\) (\(n ...
Zhang, Shan, Liu, Zuhan
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Continuous and Singular Micromagnetic Configurations

IEEE Transactions on Magnetics, 2017
Up to the present time [1965], only magnetic configurations that are continuous in the micromagnetic sense have been described in the literature. The consequences of this continuity restriction on possible types of magnetization reversal processes have received no attention. These consequences are discussed here.
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Behavior of a Pendulum with a Singular Configuration Space

Vestnik St. Petersburg University, Mathematics
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A Study of the Singular Configurations of Serial Manipulators

Journal of Mechanisms, Transmissions, and Automation in Design, 1987
A manipulator is at a singular configuration when the screws representing the instantaneous joint motions of the manipulator are linearly dependent, and the manipulator cannot be moved along an exact path with specified orientation in world coordinates.
Shih-Liang Wang, Kenneth J. Waldron
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On the infinitesimal motion of a parallel manipulator in singular configurations

Proceedings 1992 IEEE International Conference on Robotics and Automation, 2003
The author considers a specific parallel manipulator and determines the features of the infinitesimal motions associated with each of the singular configurations. It is shown that every singular configuration for a MSSM is obtained when the 6 lines associated with the links of the manipulator belong to a linear complex of lines.
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Configurational Forces on Elastic Line Singularities

Journal of Applied Mechanics, 2018
Configurational forces acting on two-dimensional (2D) elastic line singularities are evaluated by path-independent J-, M-, and L-integrals in the framework of plane strain linear elasticity. The elastic line singularities considered in this study are the edge dislocation, the line force, the nuclei of strain, and the concentrated couple moment that are
Youjung Seo, Gyu-Jin Jung, In-Ho Kim, Y. Eugene Pak   +3 more
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Singular configurations of planar parallel manipulators

Archives of Civil and Mechanical Engineering, 2006
The paper deals with determining singular configurations for a group of 3 DOF planar parallel manipulators whose links form revolute and prismatic pairs. Relations for Jacobian matrix determinants for selected mechanisms are derived. The form of the equations differs depending on the structure of the inner part of the manipulators belonging to the ...
A. GRONOWICZ, M. PRUCNAL-WIESZTORT
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Elastic Analysis of Cylindrical Configurations With Stress Singularities

Journal of Applied Mechanics, 1972
The problem of stress analysis of a circular cylinder is considered under conditions which give rise to stress singularities. Such stresses can be produced by circular boundary discontinuities or when boundaries are subject to mixed displacement and force conditions. General solutions are obtained using transformation of the cylindrical coordinates and
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Collinear Central Configurations and Singular Surfaces in the Mass Space

Archive for Rational Mechanics and Analysis, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Long, Yiming, Sun, Shanzong
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Spin configurations near singularities in micromagnetism

Physics Letters A, 1980
Abstract The configurations near singularities in Heisenberg ferromagnet are found. The possibility of the existence of wall magnetic defects is predicted.
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