Results 51 to 60 of about 372,861 (293)

ANALYSIS OF THICK RECTANGULAR PLATES RESTING ON NONLINEAR WINKLER FOUNDATION

open access: yesJournal of Engineering and Sustainable Development, 2016
This research deals with the elastic behavior of thick plates resting on nonlinear Winkler foundation. Mindlin’s thick plate theory is extended to include the effect of nonlinear elastic foundation.
Adel A. Al-Azzawi, Hasanain M. Ghaltan
doaj  

Finite element methods for nonlinear shell analysis

open access: yesNumerische Mathematik, 1981
Finite element methods for nonlinear shell analysis are analyzed using both the minimum potential energy and the mixed formulations. Existence and local uniqueness of both the exact solutions and the corresponding finite element solutions are proved. Error bounds, which are of the same order as for the corresponding linear problems, are established.
openaire   +2 more sources

Generalized Multiscale Finite Element Methods. Nonlinear Elliptic Equations [PDF]

open access: yesCommunications in Computational Physics, 2014
AbstractIn this paper we use the Generalized Multiscale Finite Element Method (GMsFEM) framework, introduced in [26], in order to solve nonlinear elliptic equations with high-contrast coefficients. The proposed solution method involves linearizing the equation so that coarse-grid quantities of previous solution iterates can be regarded as auxiliary ...
Efendiev, Yalchin R.   +3 more
openaire   +3 more sources

Advanced nonlinear modelling techniques for switched reluctance machines [PDF]

open access: yes, 2003
This paper gives an overview of different modelling techniques to describe the nonlinear behaviour of both saturated switched reluctance machine (SRM) and power electronic converter.
Belmans, Ronnie   +3 more
core  

Miniature Nanomesh Mechano‐Acoustic Sensor with Wide Linear Dynamic Range, Broad Bandwidth, and Flat Frequency Response

open access: yesAdvanced Functional Materials, EarlyView.
A miniaturized mechano‐acoustic sensor is developed using an electrospun PVDF nanomesh as the diaphragm in a capacitive sensor structure. Unlike conventional nanomesh‐based sensors, it achieves high linear sensitivity, a broad and flat frequency response, and a compact form factor.
Jeng‐Hun Lee   +8 more
wiley   +1 more source

Validation of Finite Element Solutions of Nonlinear, Periodic Eddy Current Problems

open access: yesArchives of Electrical Engineering, 2014
An industrial application is presented to validate a finite element analysis of 3-dimensional, nonlinear eddy-current problems with periodic excitation.
Plasser René, Bíró Oszkár
doaj   +1 more source

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin   +7 more
wiley   +1 more source

Local Maximum Entropy Shape Functions Based FE-EFGM Coupling [PDF]

open access: yes, 2013
In this paper, a new method for coupling the finite element method (FEM)and the element-free Galerkin method (EFGM) is proposed for linear elastic and geometrically nonlinear problems using local maximum entropy shape functions in theEFG zone of the ...
Augarde, C.E., Coombs, W. M., Ullah, Z.
core  

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid   +13 more
wiley   +1 more source

Finite Element Analysis of Earth-retaining Structures Problems in Nonlinear Partially Saturated Soil

open access: yesJournal of Engineering and Sustainable Development, 2012
This paper presents the finite element method to analyze the problems of earth-retaining structures in nonlinear partially saturated soil. The finite element formulation of the incremental Biot’s theory (1941) of consolidation is presented.
Hassanein F. Hassan, Saif M. Jawad
doaj  

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