Results 51 to 60 of about 1,850 (185)

Advanced Operando X‐Ray Absorption Spectroscopy for Catalysis at High Temperature and Pressure: Insights from the French Absorption Spectroscopy Beamline in Material and Environmental Sciences and French Absorption Spectroscopy Beamline in Material and Environmental Sciences at Ultra‐High Dilution Beamlines at European Synchroton Radiation Facility

Chemistry–Methods, Volume 6, Issue 7, July 2026.
Operando X‐ray emission spectroscopy (XAS) at industrial temperature and pressure is enabled at European Synchrotron Radiation Facility (ESRF) by BM30 (FAME‐PIX) and BM16 (FAME‐UHD). High‐flux optics, a 16‐element HPGe detector and a 14‐crystal analyzer for high‐energy‐resolution fluorescence detection‐XAS/X‐ray emission spectroscopy (HERFD‐XAS/XES ...
Abdallah Nassereddine, Eric Lahera, Alain Prat, Isabelle Kieffer, Olivier Proux, Denis Testemale, Isabelle Maurin, Sophie Min, Mauro Rovezzi, Alessandro Longo, Zoltan Hubert, Hester Blommaert, Redhouane Boudjehem, Jean‐Louis Hazemann, Antonio Aguilar Tapia   +14 more
wiley   +1 more source

Forced Vibration of a Timoshenko Beam Subjected to Stationary and Moving Loads Using the Modal Analysis Method

Shock and Vibration, 2017
The modal analysis method (MAM) is very useful for obtaining the dynamic responses of a structure in analytical closed forms. In order to use the MAM, accurate information is needed on the natural frequencies, mode shapes, and orthogonality of the mode ...
Taehyun Kim, Ilwook Park, Usik Lee
doaj   +1 more source

On the Stabilizability of a Slowly Rotating Timoshenko Beam

Zeitschrift für Analysis und ihre Anwendungen, 2000
In this paper we continue our investigation of a slowly rotating Timoshenko beam in a horizontal plane whose movement is controlled by the angular acceleration of the disk of a driving motor into which the beam is clamped. We show how to choose a feedback control allowing to stabilize our system (the beam plus the disk) in a preassigned position of ...
Krabs, W., Sklyar, G. M.
openaire   +2 more sources

Nonlinear Response‐History Analyses of Masonry and Mixed Structures With HybriDFEM

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 8, Page 1694-1709, 10 July 2026.
ABSTRACT The hybrid discrete‐finite element (HybriDFEM) method, previously developed to perform static and modal analysis in discrete and coupled discrete‐finite element models, is extended to nonlinear response‐history analyses. The equations of motion for the HybriDFEM model are solved through various numerical time‐integration schemes, both explicit
Igor Bouckaert, Michele Godio, João Pacheco de Almeida   +2 more
wiley   +1 more source

Finite Element Modelling of Rocking and Hybrid Precast Walls under Seismic Loading

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 9, Page 1924-1941, 25 July 2026.
ABSTRACT In recent years, self‐centring systems have received considerable research interest in the seismic design of precast concrete structures for their ability to limit damage and satisfy resilience requirements. Rocking and hybrid structural walls, characterised by the formation of a single gap at the wall–foundation interface, mitigate damage by ...
Andrea Belleri, Michele E. Bressanelli, Simone Labò, Jose I. Restrepo   +3 more
wiley   +1 more source

Shaped electrodes for adaptive X‐ray optics

Journal of Synchrotron Radiation, Volume 33, Issue 4, Page 961-967, July 2026.
For adaptive X‐ray optics on high‐performance beamline optical systems, we describe an approach to mirror figure and slope control using patterned, shaped electrodes to control the local curvature on a lithium niobate substrate from a single applied voltage. Longitudinally continuous electrode patterns achieve target shapes without discontinuities, and
Kenneth A. Goldberg, Francesco Marzari, Grant D. Cutler   +2 more
wiley   +1 more source

Exponential Decay Rate of a One-Dimensional Tree-Structured Timoshenko Beam System with Boundary Feedbacks

Axioms
In this paper, we investigate a one-dimensional tree-structured Timoshenko beam system composed of three beams with boundary feedback controls and derive its explicit exponential decay rate.
Yaru Xie, Mengjiao Gao, Yanfang Li
doaj   +1 more source

Analytical Solution for the Free Vibration Analysis of Delaminated Timoshenko Beams

The Scientific World Journal, 2014
This work presents a method to find the exact solutions for the free vibration analysis of a delaminated beam based on the Timoshenko type with different boundary conditions.
Ramazan-Ali Jafari-Talookolaei, Maryam Abedi   +1 more
doaj   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, Volume 6, Issue 2, Page 327-343, June 2026.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Size effects on free vibration of heterogeneous beams

MATEC Web of Conferences, 2018
In this paper the influence of microstructure on the free vibration of geometrically similar heterogeneous beams with free-free boundary conditions was numerically investigated by detailed finite element analysis (FEA) to identify and quantify any effect
Hassanati Bahman, Wheel Marcus
doaj   +1 more source