scholarly journals High frequency modes meshfree analysis of Reissner–Mindlin plates

2016 ◽  
Vol 1 (3) ◽  
pp. 400-412 ◽  
Author(s):  
Tinh Quoc Bui ◽  
Duc Hong Doan ◽  
Thom Van Do ◽  
Sohichi Hirose ◽  
Nguyen Dinh Duc
Keyword(s):  
High Frequency ◽  
Meshfree Analysis ◽  
High Frequency Modes

Shock Mitigation by Energy Reversal to the High Frequency Modes

2014 ◽  
Author(s):  
Mohammad A. AL-Shudeifat ◽  
Alexander F. Vakakis ◽  
Lawrence A. Bergman
Keyword(s):  
High Frequency ◽  
Large Scale ◽  
Computational Study ◽  
Dynamic Structure ◽  
Frequency Mode ◽  
Frame Structure ◽  
Shock Energy ◽  
Modal Damping ◽  
Shock Mitigation ◽  
High Frequency Modes

In this computational study, a light-weight dynamic device is investigated for passive energy reversal from the lowest frequency mode to the high frequency modes of a large-scale frame structure for rapid shock mitigation. The device is based on the single-sided vibro-impact mechanism. It has two functions for passive energy transfer: a nonlinear energy sink (NES) for local energy dissipation and an energy pump to high frequency modes where a significant amount of the shock energy is rapidly dissipated. As a result, a significant portion of the shock energy induced into the linear dynamic structure can be passively reversed from the lowest frequency mode to the high frequency modes and rapidly dissipated by their modal damping. The amount of the energy dissipated by the modal damping of the high frequency modes can be controlled by the amount of inherent damping in the device. Ideally, the device can passively reverse up to 80% of the input shock energy from the lowest frequency mode to the high frequency modes when its damping is assumed to be zero and its impact coefficient of restitution is equal to unity. The shock energy redistribution between this device and the high frequency modes is found to be efficient for rapid shock mitigation in the considered 9-story dynamic structure.

scholarly journals Effect of high-frequency modes on singlet fission dynamics

2017 ◽  
Vol 146 (4) ◽  
pp. 044101 ◽  
Author(s):  
Yuta Fujihashi ◽  
Lipeng Chen ◽  
Akihito Ishizaki ◽  
Junling Wang ◽  
Yang Zhao
Keyword(s):  
High Frequency ◽  
Singlet Fission ◽  
High Frequency Modes

Boson Peak and High Frequency Modes in Amorphous Silica

1997 ◽  
Vol 78 (12) ◽  
pp. 2401-2404 ◽  
Author(s):  
Bertrand Guillot ◽  
Yves Guissani
Keyword(s):  
Amorphous Silica ◽  
High Frequency ◽  
Boson Peak ◽  
High Frequency Modes

The influence of high‐frequency modes on ultrashort pulse absorption initiated processes

1996 ◽  
Vol 105 (21) ◽  
pp. 9403-9411 ◽  
Author(s):  
Mark N. Kobrak ◽  
Eric M. Hiller ◽  
Stuart A. Rice
Keyword(s):  
Ultrashort Pulse ◽  
High Frequency ◽  
High Frequency Modes

scholarly journals Effect of magnetic bending on the EBT high-frequency modes

1986 ◽  
Author(s):  
A. M. El-Nadi ◽  
S. Hiroe ◽  
J. C. Whitson ◽  
H. F. Hassen ◽  
H. A. Kirolous
Keyword(s):  
High Frequency ◽  
High Frequency Modes
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