نتایج جستجو برای: maxwell stress functions

تعداد نتایج: 922085  

2007
Björn Birnir Niklas Wellander

A model for a semiconducting ceramic material used in devices to protect electrical equipment against overvoltages is presented. The fine structure in the material induces highly oscillating coefficients in the Maxwell equation. Maxwell equations are homogenized to obtain a coupled system. The fine scales in the model yield a local problem coupled with the homogenized Maxwell’s equations. In th...

Journal: :Mathematics 2021

Some unsteady motions of incompressible upper-convected Maxwell (UCM) fluids with exponential dependence viscosity on the pressure are analytically studied. The fluid motion between two infinite horizontal parallel plates is generated by lower plate, which applies time-dependent shear stresses to fluid. Exact expressions, in terms standard Bessel functions, established both for dimensionless ve...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Yegang Wu S Teitel

We show that the maximum entropy hypothesis can successfully explain the distribution of stresses on compact clusters of particles within disordered mechanically stable packings of soft, isotropically stressed, frictionless disks above the jamming transition. We show that, in our two-dimensional case, it becomes necessary to consider not only the stress but also the Maxwell-Cremona force-tile a...

2001
B. G. Konopelchenko W. K. Schief

A remarkable connection between soliton theory and an important and beautiful branch of the theory of graphical statics developed by Maxwell and his contemporaries is revealed. Thus, it is demonstrated that reciprocal triangles which constitute the simplest pair of reciprocal figures representing both a framework and a self-stress encapsulate the integrable discrete BKP equation and its Schwarz...

2001
B. G. Konopelchenko W. K. Schief

A remarkable connection between soliton theory and an important and beautiful branch of the theory of graphical statics developed by Maxwell and his contemporaries is revealed. Thus, it is demonstrated that reciprocal triangles which constitute the simplest pair of reciprocal figures representing both a framework and a self-stress encapsulate the integrable discrete BKP equation and its Schwarz...

2013
Brandon W. Peterson Henny C. van der Mei Jelmer Sjollema Henk J. Busscher Prashant K. Sharma

UNLABELLED Bacteria in the biofilm mode of growth are protected against chemical and mechanical stresses. Biofilms are composed, for the most part, of extracellular polymeric substances (EPSs). The extracellular matrix is composed of different chemical constituents, such as proteins, polysaccharides, and extracellular DNA (eDNA). Here we aimed to identify the roles of different matrix constitue...

In this paper a general analytical solution is obtained to find stress distribution in a finite elastic plate with a circular or square hole subjected to arbitrary biaxial partial loading using modified boundary condition by assuming plane stress conditions. The method employed is based on solution of circular hole in finite rectangular plate. This plate is mapped to circular ones and the parti...

Journal: :Physical review. D, Particles and fields 1990
Milton Ng

In odd-dimensional spaces, gauge invariance permits a Chern-Simons mass term for the gauge fields in addition to the usual Maxwell-Yang-Mills kinetic energy term. We study the Casimir effect in such a (2+1)-dimensional Abelian theory. For the case of parallel conducting lines the result is the same as for a scalar field. For the case of circular boundary conditions the results are completely di...

In this work, the least squares weighted residual method is used to solve the two-dimensional (2D) elasticity problem of a rectangular plate of in-plane dimensions 2a 2b subjected to parabolic edge tensile loads applied at the two edges x = a. The problem is expressed using Beltrami–Michell stress formulation. Airy’s stress function method is applied to the stress compatibility equation, and th...

Journal: :Turkish journal of physics 2021

We study charged massless fermionic perturbations in the background of $4$-dimensional linear dilaton black holes Einstein-Maxwell-dilaton theory with double Liouville-type potentials. present analytical quasinormal modes, whose Dirac equations are solved terms hypergeometric functions. also discuss stability these under perturbations.

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