منابع مشابه
Buckling of Spherical Shells Revisited
A study is presented of the post-buckling behavior and imperfection-sensitivity of complete spherical shells subject to uniform external pressure. The study builds on and extends the major contribution to spherical shell buckling by W.T. Koiter in the 1960’s. Numerical results are presented for the axisymmetric large deflection behavior of perfect spheres followed by an extensive analysis of th...
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A quantum theory of spherically symmetric thin shells of null dust and their gravitational field is studied. In Nucl. Phys. 603 (2001) 515, it has been shown how superpositions of quantum states with different geometries can lead to a solution of the singularity problem and black hole information paradox: the shells bounce and re-expand and the evolution is unitary. The corresponding scattering...
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The equilibrium texture of nematic shells is studied as a function of their thickness. For ultrathin shells the ground state has four short 1/2 disclination lines but, as the thickness of the film increases, a three-dimensional escaped configuration composed of two pairs of half-hedgehogs becomes energetically favorable. We derive an exact solution for the nematic ground state in the one Frank ...
متن کاملBuckling Analysis of Concrete Spherical Shells
In some simple two-dimensional structures it is sufficient to determine only the lowest value of the load at which buckling commences. However, in the case of shells, it may be also necessary to investigate the postbuckling behavior because it has an important bearing on the magnitude of the failure load. The importance of the postbuckling behavior, which the small deflection theory of buckling...
متن کاملOut-of-surface vortices in spherical shells
Volodymyr P. Kravchuk,1,* Denis D. Sheka,2 Robert Streubel,3,4 Denys Makarov,3 Oliver G. Schmidt,3,4 and Yuri Gaididei1 1Bogolyubov Institute for Theoretical Physics, 03143 Kiev, Ukraine 2Taras Shevchenko National University of Kiev, 01601 Kiev, Ukraine 3Institute for Integrative Nanosciences, IFW Dresden, 01069 Dresden, Germany 4Material Systems for Nanoelectronics, Chemnitz University of Tech...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2019
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.123.058002