Results 61 to 70 of about 2,094,428 (180)

Polynomial‐shaped electrodes for adaptive X‐ray optics

Journal of Synchrotron Radiation, EarlyView.
A shaped electrode design for lithium niobate adaptive X‐ray mirrors connects actuator degrees of freedom to specific polynomial orders, enabling general shape control and the correction of defocus, coma and fourth‐order aberrations with a limited number of inputs.For adaptive mirrors on X‐ray beamlines and optical systems, we describe a strategy for ...
Kenneth A. Goldberg, Francesco Marzari, Grant D. Cutler   +2 more
wiley   +1 more source

Fractional visco-elastic Timoshenko beam from elastic Euler-Bernoulli beam

, 2014
The Euler-Bernoulli beam theory is well established in such a way that engineers are very confident with the determination of stress field or deflections of the elastic beam based on this theory.
DI LORENZO, Salvatore, PIRROTTA, Antonina, Cutrona, S   +2 more
core   +1 more source

Three-Node Euler-Bernoulli Beam Element Based on Positional FEM [PDF]

, 2012
Based on positional FEM, three-node Euler-Bernoulli beam element for large deflection 2D frame analysis is researched. Solution strategy of geometric nonlinear static analysis with three-node Euler-Bernoulli beam element is introduced to the frame ...
Jian, Liu, Shenjie, Zhou, Meiling, Dong, Yuqin, Yan   +3 more
core   +1 more source

On the compression softening effect of prestressed beams

Vietnam Journal of Mechanics, 2006
The main objective of the present paper is to study the transverse vibration of the prestressed beams. The differential equation of the transverse vibration of the Euler-Bernoulli beam is developed, in which the initial axial strain in every cross ...
Nguyen Van Khang, Nguyen Phong Dien, Nguyen Thi Van Huong   +2 more
doaj   +1 more source

Multiscale Modelling of Frame Structures With Lattice‐Like Mesostructures Using Finite Beam Elements at the Macro and Meso Level

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT In this contribution, we present a FE2${\rm FE}^2$ model for shear‐flexible beams with a lattice‐like meso structure. The meso structure consists of a network of beams. The meso ‐ and macroscale are coupled by means of the Hill–Mandel condition.
Julian Ochs, Jens Wackerfuß
wiley   +1 more source

Some energy conservative schemes for vibro-impacts of a beam on rigid obstacles [PDF]

, 2011
Caused by the problem of unilateral contact during vibrations of satellite solar arrays, the aim of this paper is to better understand such a phenomenon.
Salaün, Michel, Pozzolini, Cédric, Salaun, M., C. Pozzolini, M. Salaun, Pozzolini, C.   +5 more
core   +1 more source

Capability and Limitations of a Tuned Mass Damper for a 15‐MW Semisubmersible Floating Wind Turbine

Wind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT Large floating offshore wind turbines (FOWTs) under coupled aerodynamic and hydrodynamic loading exhibit broadband low‐frequency response in addition to the platform‐pitch resonance. Tuned mass dampers (TMDs) have been studied for a range of applications, but their net benefit under fully coupled operational conditions has not been quantified.
Yu Gao, Julian Mauricio Londono Monsalve, Ajit C. Pillai, Philipp R. Thies   +3 more
wiley   +1 more source

A Novel Non‐Torque Dynamic Load Decoupling Method for Large Wind Turbine Nacelle Test Bench

Wind Energy, Volume 29, Issue 10, October 2026.
ABSTRACT Accurate reproduction of non‐torque dynamic loads is a key challenge for full‐scale wind turbine nacelle test benches, where the nacelle‐level drivetrain is validated under controlled multi‐degree‐of‐freedom mechanical loading. This study focuses on the shaft‐conjugate load application unit (LAU) adopted in the 25‐MW‐class full‐scale wind ...
Yantao Zeng, Wei Bian, Lin'an Li, Yang Xue, Haikun Jia, Bo Zhang, Qingbo Kang, Chuanwei Li   +7 more
wiley   +1 more source

An Analytical Solution to Buckling of Thick Beams Based on a Cubic Polynomial Shear Deformation Beam Theory [PDF]

Engineering and Technology Journal
This paper presents analytical solutions for the buckling of thick beams. The Bernoulli-Euler beam theory (BEBT) overestimates their critical buckling load.
Charles Ike
doaj   +1 more source

The Effect of Veil Type and Laminate Architecture on the Mechanical and Dynamic Performance of Aramid Fiber Interlayered Thermoplastic Veil/Epoxy Composites: A Comprehensive Evaluation

Polymer Composites, Volume 47, Issue 18, Page 16922-16939, 20 September 2026.
Graphical summary of the aramid fiber/thermoplastic veil laminates: (a) H‐2/1 and H‐2/2 hybrid architectures, (b) contrasting FG and PI/aramid microstructures, (c) flexural stiffness ranking, and (d) damping response, illustrating that fine‐glass (FG) veils maximize stiffness while PEI, PI, and PEEK veils maximize damping, with PPS providing an ...
Yavuz Selim Tarih
wiley   +1 more source