Results 41 to 50 of about 344,449 (301)

Płaskie drgania swobodne niepodpartych pierścieni kołowych. Część III. Formy jednoczęstościowych drgań swobodnych

open access: yesEngineering Transactions, 1990
Na podstawie poprzednich opracowań [1, 2] w niniejszej pracy omówiono charakterystyczne cechy jednoczęstościowych drgań swobodnych, powstających w modelu pierścienia uściślonym w sensie Timoshenki, związane z występowaniem dwuwymiarowych podprzestrzeni ...
Bogdan OLSZOWSKI
doaj  

Free Vibrations of Uniform Timoshenko Beams on Pasternak Foundation Using Coupled Displacement Field Method

open access: yesArchive of Mechanical Engineering, 2017
Complex structures used in various engineering applications are made up of simple structural members like beams, plates and shells. The fundamental frequency is absolutely essential in determining the response of these structural elements subjected to ...
Rajesh Korabathina   +1 more
doaj   +1 more source

Application of dynamic stiffness method in numerical free vibration analysis of stiffened plates [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2017
The free vibration analysis of stiffened plate assemblies has been performed in this paper by using the dynamic stiffness method. Rectangular Mindlin plate dynamic stiffness element has been formulated.
Damnjanović Emilija   +4 more
doaj   +1 more source

On the Theory of Electron-Transfer Reactions. VI. Unified Treatment for Homogeneous and Electrode Reactions [PDF]

open access: yes, 1965
A unified theory of homogeneous and electrochemical electron‐transfer rates is developed using statistical mechanics. The treatment is a generalization of earlier papers of this series and is concerned with seeking a fairly broad basis for the ...
Marcus, R. A.
core   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

open access: yesAdvanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan   +9 more
wiley   +1 more source

Free vibration analysis of functionally graded porous materials complex shells with variable thickness [PDF]

open access: yesAUT Journal of Mechanical Engineering
This research investigates the vibration characteristics of composite shells featuring a cylindrical-hemispherical geometry, fabricated from functionally graded porous materials with varying thicknesses.
Farzaneh Jafari Maryaki   +1 more
doaj   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

open access: yesAdvanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller   +6 more
wiley   +1 more source

Free Vibration Analysis of Curvilinearly Tapered Axially Functionally Graded Material Beams

open access: yesApplied Sciences
The study focuses on the free vibration analysis of beams made of axially functionally graded materials (AFGM) with curvilinear variable cross-sections along their length.
Vyacheslav N. Burlayenko   +2 more
doaj   +1 more source

Shape Optimization of a Column Modelling the Bridge Span under a Specific Load - Numerical and Experimental Studies

open access: yesCommunications, 2023
This work is dedicated to the problem of optimizing the shape of columns modelling bridge span subjected to the selected specific load case. Based on Hamilton's principle, motion equations and boundary conditions were defined.
Janusz Szmidla, Anna Jurczyńska
doaj   +1 more source

A coherent optical link through the turbulent atmosphere

open access: yes, 2010
We describe the realization of a 5 km free space coherent optical link through the turbulent atmosphere between a telescope and a ground target. We present the phase noise of the link, limited mainly by atmospheric turbulence and mechanical vibrations of
André Clairon   +13 more
core   +3 more sources

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