Implicit three-dimensional finite-element formulation for the nonlinear structural response of reactor components [PDF]
, 1975 The formulation of a finite-element procedure for the implicit transient and static analysis of plate/shell type structures in three-dimensional space is described. The triangular plate/shell element can sustain both membrane and bending stresses.
Belytschko, T.B., Kulak, R.F.
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Variational Methods for Nonsmooth Mechanics [PDF]
, 2003 In this thesis we investigate nonsmooth classical and continuum mechanics and its discretizations by means of variational numerical and geometric methods.
Fetecau, Razvan Constantin
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Discrete Lorentz symmetry and discrete spacetime translational symmetry in two- and three-dimensional crystals [PDF]
Journal of Physics: Condensed Matter, 2020 Abstract As is well known, crystals have discrete space translational symmetry. It was recently noticed that one-dimensional crystals possibly have discrete Poincaré symmetry, which contains discrete Lorentz and discrete time translational symmetry as well.
Xiuwen Li +3 more
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Exact reconstruction with directional wavelets on the sphere [PDF]
, 2008 A new formalism is derived for the analysis and exact reconstruction of band-limited signals on the sphere with directional wavelets. It represents an evolution of a previously developed wavelet formalism developed by Antoine & Vandergheynst and ...
Wiaux, Yves; id_orcid +6 more
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A finite volume algorithm for the dynamics of filaments, rods, and beams
, 2022 Filaments, rods, and beams are ubiquitous in biology and in many man-made products and structures. While a substantial amount of research has been done to understand the statics and dynamics of these long, thin objects, there remain many unanswered and ...
Ryan, Paul M., Wolgemuth, Charles W.
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Fast Learning of Sprites using Invariant [PDF]
, 2005 A popular framework for the interpretation of image sequences is the layers or sprite model of e.g. Wang and Adelson (1994), Irani et al. (1994). Jojic and Frey (2001) provide a generative probabilistic model framework for this task, but their algorithm ...
Titsias, Michalis K +2 more
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Spontaneous breaking of a discrete time-translation symmetry [PDF]
Physical Review A, 2021 Spontaneous symmetry breaking is a ubiquitous concept and is well described in many textbooks of physics. However, direct observation of spontaneous symmetry breaking is lacking. Here we present the observation and analysis of a spontaneously broken discrete time-translation symmetry in our driven system.
J. Smits +2 more
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Operators commuting with a discrete subgroup of translations [PDF]
Journal of Geometric Analysis, 2006 This paper investigates operators that commute with a discrete group of translations. Classes of such operators have received considerable attention in the context of approximation theory and shift-invariant systems, Gabor analysis, and wavelet frames.
Feichtinger, Hans Georg +3 more
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Discrete Symmetries in Translation Invariant Cosmological Models [PDF]
General Relativity and Gravitation, 2001 17 pages, 8 ps figures. To appear in Gen.
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Self-assembled fibre optoelectronics with discrete translational symmetry [PDF]
Nature Communications, 2016 AbstractFibres with electronic and photonic properties are essential building blocks for functional fabrics with system level attributes. The scalability of thermal fibre drawing approach offers access to large device quantities, while constraining the devices to be translational symmetric.
Michael Rein +5 more
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