Results 91 to 100 of about 20,104 (213)

Platonic crystal with low-frequency locally resonant snail structures. Wave trapping, transmission amplification and shielding

open access: yes, 2018
We propose a new type of platonic crystal. The proposed microstructured plate includes snail resonators with low-frequency resonant vibrations. The particular dynamic effect of the resonators are highlighted by a comparative analysis of dispersion ...
Brun, M., Carta, G., Morvaridi, M.
core   +1 more source

The Generation of Equal-Intensity and Multi-Focus Optical Vortices by a Composite Spiral Zone Plate

open access: yesPhotonics
We propose a new vortex lens for producing multiple focused coaxial vortices with approximately equal intensities along the optical axis, termed equal-intensity multi-focus composite spiral zone plates (EMCSZPs).
Huaping Zang   +9 more
doaj   +1 more source

The multiplicative deformation split for shells with application to growth, chemical swelling, thermoelasticity, viscoelasticity and elastoplasticity

open access: yes, 2019
This work presents a general unified theory for coupled nonlinear elastic and inelastic deformations of curved thin shells. The coupling is based on a multiplicative decomposition of the surface deformation gradient.
Ghaffari, Reza   +2 more
core   +1 more source

Mixed finite elements for Kirchhoff–Love plate bending

open access: yesMathematics of Computation
We present a mixed finite element method with triangular and parallelogram meshes for the Kirchhoff–Love plate bending model. Critical ingredient is the construction of low-dimensional local spaces and appropriate degrees of freedom that provide conformity in terms of a sufficiently large tensor space and that allow for any kind of physically relevant ...
Uhrer, Thomas ubull, Heuer, Norbert
openaire   +4 more sources

A thin rectangular viscoelastic orthotropic plate under transverse impuls loading [PDF]

open access: yesApplied and Computational Mechanics, 2007
An analytical solution of stress wave propagation in a thin rectangular viscoelastic plate with special orthotropy under transverse impulse loading is presented.
Soukup J., Volek J.
doaj  

An Alternative Approach to Initial Stability Analysis of Kirchhoff Plates Resting on Internal Supports by the Boundary Element Method

open access: yesEngineering Transactions, 2015
An initial stability of Kirchhoff plates supported on boundary and resting on internal supports is analysed in this paper. The internal supports are understood to be part of a plate surface or a line belonging to the plate.
Michał Jan GUMINIAK
doaj   +1 more source

Three-dimensional flat shell-to-shell coupling: numerical challenges

open access: yesCurved and Layered Structures, 2017
The node-to-surface formulation is widely used in contact simulations with finite elements because it is relatively easy to implement using different types of element discretizations.
Guo Kuo, Haikal Ghadir
doaj   +1 more source

Single and two capacitor (solenoid) paradox (studied at the realistic circuits)

open access: yes, 2018
We study remarkable two (single) capacitor paradox and we introduce analogously a new two solenoids (inductive coils) paradox at experimentally and theoretically well-known electrical circuits with realistic electrical resistances.
Pankovic, Vladan
core  

Nonlinear parametric oscillations of viscoelastic plate of variable thickness

open access: yesИнженерно-строительный журнал, 2018
Isotropic viscoelastic plates of variable thickness under the effect of a uniformly distributed vibration load applied along one of the parallel sides, resulting in parametric resonance (with certain combinations of eigenfrequencies of vibration and ...
Mirziyod Mirsaidov   +5 more
doaj   +1 more source

Exact solution for bending analysis of functionally graded micro-plates based on strain gradient theory

open access: yesScience and Engineering of Composite Materials, 2018
In the present article, static analysis of thin functionally graded micro-plates, based on Kirchhoff plate theory, is investigated. Utilizing the strain gradient theory and principle of minimum total potential energy, governing equations of rectangular ...
Mohammadi Meisam   +3 more
doaj   +1 more source

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