Torsion of Compound B a R S - - a Relaxation Solution
نویسنده
چکیده
-This paper deals with a finite-difference solution of the torsion problem of nonhomogeneous and compound prismatic bars. General, governing equations for both problems are developed and the boundary conditions for an interface between parts composed of homogeneous but different materials are stated. The case of multiply connected regions is discussed and integral conditions, analogous to the conditions in multiply connected homogeneous bars, are developed. Examples illustrating various types of problems are worked out and the accuracy of the method demonstrated by comparison with some known solutions.
منابع مشابه
An Axisymmetric Torsion Problem of an Elastic Layer on a Rigid Circular Base
A solution is presented to a doubly mixed boundary value problem of the torsion of an elastic layer, partially resting on a rigid circular base by a circular rigid punch attached to its surface. This problem is reduced to a system of dual integral equations using the Boussinesq stress functions and the Hankel integral transforms. With the help of the Gegenbauer expansion formula of the Bessel f...
متن کاملOn String Cosmology and de Sitter inflation with massless dilatons and dynamical torsion
Variation of the 4 − D string cosmology action with dynamical torsion and massless dilatons lead to an expression of torsion in terms of massless dilatons in the case of de Sitter inflation.The solution is approximated according to the COBE data. Depto. de F́ısica Teórica IF UERJ Rua São Francisco Xavier 524, Rio de Janeiro, RJ CEP:20550 ,Maracanã.e-mail:[email protected] Recently a renewed ...
متن کاملCOMPUTER AIDED OPTIMIZATION OF SPECIMEN GEOMETRY OF HOT TORSION TEST TO MINIMIZE MICROSTRUCTURE NONHOMOGENEITY AND TEMPERATURE GRADIENT BEFORE DEFORMATION
Abstract:Optimization of specimen geometry before subjecting it to hot torsion test (HTT) is essential for minimizingnon-uniform temperature distribution and obtaining uniform microstructure thought the specimen.In the present study, a nonlinear transient analysis was performed for a number of different geometries andtemperatures using the commercial finite element (FE) package ANSYSTM. FE ther...
متن کاملComparisso of intralesionally injected Zink sulfate and pentavalent Antimony compound in treatment of acute cutaneous leishmaniasis
acute cutaneous leishmaniasis(ACL) is an endemic disease in developing countries.the first line drug for treatment of ACL.according to WHO recommendation,is the pentavalent antimony compounds such as meglumine antimoniate(Glucantime{SB}).high cost ,side effects,multiple injections and incomplete efficacy are limitations of this therapy.we evaluated the efficacy of intralesional(IL) injection of...
متن کاملCrack analysis of an orthotropic circular bars reinforced by a magnetic coating under Saint-Venant torsion
This paper presents an analytical solution for an orthotropic circular cross section bar with a magnetic coating weakened by multiple arbitrary oriented cracks under Saint-Venant torsion by means of the distributed dislocation technique. At first, the solution of the orthotropic bar with a magnetic coating weakened by a Volterra-type screw dislocation is achieved with the aid of the finite Four...
متن کامل