Results 11 to 20 of about 13,811,143 (310)

Hydrogen storage by earth-abundant metals, synthesis and characterization of Al3FeH3.9

open access: yesMaterials & Design, 2021
Among the various functionalities of hydrides, their use in hydrogen storage has been the most intensively studied because hydrides can store hydrogen compactly and safely. Thus, hydrides are key materials for the hydrogen economy.
Hiroyuki Saitoh   +11 more
doaj   +1 more source

Nodal position control of bending mode of three- dimensional beam structures based on visualization of eigenmode formation

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In a conceptual design phase of noise and vibration performance, CAE (Computer Aided Engineering) is frequently introduced to design appropriate properties of individual members.
Sunao TOMITA   +3 more
doaj   +1 more source

A Novel Damage Indicator Based on the Electromechanical Impedance Principle for Structural Damage Identification

open access: yesSensors, 2018
This paper presents a novel structural damage detection indicator, i.e., fourth-order voltage statistical moment (FVSM) based on the electromechanical impedance (EMI) principle, and then proposes a two-step damage detection method based on the novel ...
Pin Zhou, Dansheng Wang, Hongping Zhu
doaj   +1 more source

Longitudinal Fracture Analysis of Continuously Inhomogeneous Beams Undergoing General Planar Motion [PDF]

open access: yesJournal of Applied and Computational Mechanics
This paper is devoted to longitudinal fracture in continuously inhomogeneous non-linear elastic beam structures which undergo general planar motion. First, a unified approach for treatment of the problem is presented assuming law of planar motion in ...
Victor Rizov
doaj   +1 more source

Analysis on the Difference of Impact Response between Single Coal-Rock Particle and the Box Structure-Based Tail Beam

open access: yesShock and Vibration, 2021
In the process of coal caving, the basis of identifying coal and rock by the vibration signal is the difference of the tail beam response when coal-rock impacts the tail beam, and the tail beam in the hydraulic support is a complex box structure with ...
Li-rong Wan, Zhe Li, Yang Yang, Ran Li
doaj   +1 more source

A revisit to normalization methods for purpose of stress mode shapes [PDF]

open access: yesFME Transactions, 2020
In order to accurately interpret the results of modal analysis for the purpose of stress mode shapes (SMSs), this work revisits the normalization methods in computational structural dynamics.
Zhou Yadong
doaj  

Steady-state vibrations of a beam structure under moving horizontal force-analytical approach [PDF]

open access: yesArchives of Civil Engineering
The following paper presents a dynamic analysis of a railway superstructure subjected to horizontal moving loads. The superstructure including the substructure was modelled with two infinitely long beams connected by an elastic layer. The structure rests
Magdalena Ataman, Wacław Szczesniak
doaj   +1 more source

SEISMIC MITIGATION EFFICIENCY STUDY OF THE COUPLING BEAM DAMPER IN THE SHEAR WALL STRUCTURE

open access: yesCivil Engineering Journal, 2021
Coupling beam damper can be easily repaired in the post-earthquake, which can dissipate the seismic energy of the structure in the earthquake action. In this paper, the seismic mitigation efficiency of the coupling beam damper in the shear wall structure
Xin Huang
doaj   +1 more source

Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy

open access: yes, 2020
Generally, the damage of the structure will lead to the discontinuity of the local mode shape, which can be well reflected by the modal curvature of the structure, and the local information entropy of the beam structure will also change with the ...
C. Xiang   +3 more
semanticscholar   +1 more source

Energy Flow Analysis of High-Frequency Flexural Vibration of Wedge Beam Structures

open access: yesShock and Vibration, 2022
Wedge members with variable thickness are widely used in ship structures, aerospace structures, and building structures. Considering their application scenarios, their high-frequency vibration characteristics have important research value.
Miaoxia Xie   +6 more
doaj   +1 more source

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