Results 41 to 50 of about 74,074 (298)

Optimized Torsion-Angle Normal Modes Reproduce Conformational Changes More Accurately Than Cartesian Modes [PDF]

open access: yesBiophysical Journal, 2011
We present what to our knowledge is a new method of optimized torsion-angle normal-mode analysis, in which the normal modes move along curved paths in Cartesian space. We show that optimized torsion-angle normal modes reproduce protein conformational changes more accurately than Cartesian normal modes. We also show that orthogonalizing the displacement
Bray, Jenelle K.   +2 more
openaire   +2 more sources

Optimisation of the longitudinal-torsional output of a half-wavelength Langevin transducer [PDF]

open access: yes, 2012
Numerous ultrasonic applications, such as high-frequency/low frequency drilling, require or can benefit from the inclusion of some torsional vibration behaviour within a primarily longitudinal pattern. Producing longitudinal-torsional (LT) vibration in a
Al-Budairi, Hassan   +2 more
core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Torsional-flexural buckling of unevenly battened columns under eccentrical compressive loading [PDF]

open access: yes, 2016
In this paper, an analytical model is developed to determine the torsional-flexural buckling load of a channel column braced by unevenly distributed batten plates.
AISC (American Institute of Steel Construction)   +9 more
core   +1 more source

Research on the Forced Vibration Characteristic of the Dual Mode Multistage Gear Transmission based on the Objective Parameter Optimization

open access: yesJixie chuandong, 2020
In order to analyze the cause and influence factors of the torsional vibration of the dual mode multistage gear transmission, a hybrid electric vehicle dynamic model is established based on SIMPACK.
Xiaoci Huang
doaj  

Lateral-Torsional Coupling Characteristics of a Two-Stage Planetary Gear Rotor System

open access: yesShock and Vibration, 2018
Planetary gears are one part of the whole transmission chain, and the dynamics and vibration characteristics of them are strongly coupled with external rotors.
Zhipeng Wang   +5 more
doaj   +1 more source

Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array

open access: yesNuclear Engineering and Technology, 2015
The aim of this work is to demonstrate a method for exciting and receiving torsional and longitudinal mode guided waves with an electromagnetic acoustic transducer (EMAT) ring array. First of all, a three-dimensional guided wave simulator is developed in
Akinori Furusawa   +2 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

A generalised approach to torsionality maximisation in longitudinal-torsional ultrasonic devices [PDF]

open access: yes, 2011
A longitudinal-torsional vibration mode has many applications in ultrasonic systems. Obtaining this behaviour could be achieved either by coupling the longitudinal and torsional modes or by degenerating the longitudinal mode, but the results may be ...
Al-Budairi, Hassan   +2 more
core  

Modeling of gyrosynchrotron radio emission pulsations produced by MHD loop oscillations in solar flares

open access: yes, 2011
A quantitative study of the observable radio signatures of the sausage, kink, and torsional MHD oscillation modes in flaring coronal loops is performed.
Asai   +21 more
core   +1 more source

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