Results 11 to 20 of about 147,764 (264)

Integrated photonics enables continuous-beam electron phase modulation. [PDF]

open access: yesNature, 2021
Henke JW   +13 more
europepmc   +2 more sources

Stability and Resistance of Steel Continuous Beams with Thin-Walled Box Sections

open access: yesArchives of Civil Engineering, 2018
The issues of local stability and ultimate resistance of a continuous beam with thin-walled box section (Class 4) were reduced to the analysis of the local buckling of bilaterally elastically restrained internal plate of the compression flange at ...
Brzezińska K., Szychowski A.
doaj   +1 more source

Analytical formulas for prismatic continuous beams of equal spans

open access: yes工程科学学报, 2023
Solving the deformation and internal force of a prismatic multispan continuous beam of equal spans is a fundamental and classic problem in the area of civil engineering.
Yi ZHOU   +3 more
doaj   +1 more source

Parametric Study of Continous Composite Steel-Concrete Beam with External Prestressing [PDF]

open access: yesEngineering and Technology Journal, 2015
In the present study, three-dimensional nonlinear finite element analyses were conducted to investigate the effect of several important parameters on the behavior of the external prestressed continuous composite steel-concrete beam.
Amer M. Ibrahim, Wissam D. Salman
doaj   +1 more source

Stochastic analysis of lattice, nonlocal continuous beams in vibration

open access: yesVietnam Journal of Mechanics, 2021
In this paper, we study the stochastic behavior of some lattice beams, called Hencky bar-chain model and their non-local continuous beam approximations.
Yuchen Li   +2 more
doaj   +1 more source

Moment constraints in beams with discrete and continuous rotational symmetry

open access: yesPhysical Review Accelerators and Beams, 2022
This study presents a general analysis of how the transverse rotational symmetry of a beam imposes equality constraints among transverse beam moments. Efficient analytic methods are developed to derive symmetry-imposed constraints among kth order moments
Jonathan C. Wong, Steven M. Lund
doaj   +1 more source

Application of Laplace Transform to the Free Vibration of Continuous Beams

open access: yesArchives of Civil Engineering, 2017
Laplace Transform is often used in solving the free vibration problems of structural beams. In existing research, there are two types of simplified models of continuous beam placement. The first is to regard the continuous beam as a single-span beam, the
Wen H.B., Zeng T., Hu G.Z.
doaj   +1 more source

Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge

open access: yesShock and Vibration, 2020
Based on the seismic isolation design concept of functional separation, a seismic isolation system with bearings and braces combination for railway bridge was proposed.
Yan Shi   +4 more
doaj   +1 more source

Determination of the Stress Increase of the Unbonded Tendon in a Continuous Concrete Beam at Ultimate Capacity Using Nonlinear Analysis

open access: yesNordic Concrete Research, 2021
Predicting the stress increase of an unbonded tendon in a post-tensioned continuous concrete beam at ultimate capacity is more difficult than when bonded tendons are used.
Nakari Tarja, Laaksonen Anssi
doaj   +1 more source

“Analytical continuation” of flattened Gaussian beams

open access: yesJournal of the Optical Society of America A, 2023
A purely analytical extension of flattened Gaussian beams [Opt. Commun. 107, 335 (1994)OPCOB80030-401810.1016/0030-4018(94)90342-5] to any values of beam order is here proposed. Due to it, the paraxial propagation problem of axially symmetric, coherent flat-top beams through arbitrary ABCD optical systems can definitely be solved in closed form via a ...
openaire   +3 more sources

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