Results 41 to 50 of about 851,498 (284)

Method Improvements of Testing Modulus of Soil Based on Free-Vibration Column

open access: yesAdvances in Civil Engineering, 2019
It is difficult to directly measure the dynamic elastic modulus of soils when the strain is less than 10−4, though the dynamic shear modulus can be easily obtained by the free-vibration testing method.
Dandan Jin   +4 more
doaj   +1 more source

Grillage Analysis of Plates for Vibration and Stability [PDF]

open access: yesEngineering and Technology Journal, 2007
This study deals with the problem of approximating the dynamic and static analysis of plates by using equivalent grid-framework model. The emphasis, for plate analysis, is on the stability and vibration analysis.
Sabih Al-Sarraf, Ammar Ali
doaj   +1 more source

On the performance of a nonlinear vibration isolator consisting of axially loaded curved beams [PDF]

open access: yes, 2013
A desirable characteristic for nonlinear vibration isolators is a high static stiffness and a low dynamic stiffness. A curved beam is a possible candidate for this role provided that the amplitude of vibration about the static equilibrium position is ...
Abolfathi, Ali   +2 more
core   +1 more source

Dynamic analysis of high static low dynamic stiffness vibration isolation mounts [PDF]

open access: yes, 2013
The high static low dynamic stiffness (HSLDS) concept is a design strategy for an anti-vibration mount that seeks to increase isolation by lowering the natural frequency of the mount, whilst maintaining the same static load bearing capacity.
Neild, S.A.   +5 more
core   +1 more source

Parameters Optimization and Energy Absorption Evaluation of the Steel Ball Friction Energy Absorber

open access: yesShock and Vibration, 2021
The energy absorber is used to simulate the reaction of a working piece subjected to a vibration stimulus, by which the consistent and repeatable reactions to the tool’s vibration inputs could be achieved.
Bin Gong
doaj   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

open access: yesFEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer   +7 more
wiley   +1 more source

Free Vibration Analysis of Steel Framed Structures [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2019
This study based on free vibration analysis and study the behavior of framed structure under different frequency of vibration using ANSYS software and shaking table.
Ayesha Siddika   +3 more
doaj   +1 more source

Long‐Term Neurologic Exam Findings in People Diagnosed and Treated During Acute HIV Infection

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Evaluate clinical and laboratory correlates of abnormal neurologic exam findings after acute HIV infection (AHI). Methods Participants from the RV254/SEARCH 010 cohort in Bangkok underwent standardized neurologic examinations at Weeks 0 (AHI), 12, 96, and 288 following antiretroviral therapy (ART).
Kathryn B. Holroyd   +118 more
wiley   +1 more source

Interaction curves for vibration and buckling of thin-walled composite box beams under axial loads and end moments [PDF]

open access: yes, 2010
Interaction curves for vibration and buckling of thin-walled composite box beams with arbitrary lay-ups under constant axial loads and equal end moments are presented.
Lee, Jaehong, Vo, Thuc
core   +1 more source

Ground-Borne Vibration Prediction in a Metro Depot Using Hybrid Train-Soil-Pile-Structure Interactions

open access: yesVibration
Train-induced ground vibrations can propagate into pile foundations, potentially causing undesirable vibration in nearby buildings, laboratories housing vibration-sensitive equipment, and manufacturing facilities for high-precision processes.
Ziyu Tao   +3 more
doaj   +1 more source

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