Theoretical study on phase interference method for passive reduction of multiple excitation forces – reduction method of vibration due to rhythmic action of concert audience

2021 ◽  
pp. 445-452
Author(s):  
R. Inoue ◽  
Y. Hashimoto ◽  
Y. Yokoyama
Keyword(s):  
Reduction Method ◽  
Theoretical Study ◽  
Interference Method ◽  
Phase Interference

A study on acoustic imaging based on beamformer to range spectra in the phase interference method

2013 ◽  
Vol 133 (5) ◽  
pp. 3301-3301
Author(s):  
Ryota Miyake ◽  
Kohei Hayashida ◽  
Masato Nakayama ◽  
Takanobu Nishiura
Keyword(s):  
Acoustic Imaging ◽  
Interference Method ◽  
Phase Interference

A study on acoustic imaging based on beamformer to range spectra in the phase interference method

2013 ◽  
Author(s):  
Ryota Miyake ◽  
Kohei Hayashida ◽  
Masato Nakayama ◽  
Takanobu Nishiura
Keyword(s):  
Acoustic Imaging ◽  
Interference Method ◽  
Phase Interference

Modeling and theoretical study of relief chamfer method for reducing the flow ripple of a spool valves distribution radial piston pump

2020 ◽  
pp. 095440622096562
Author(s):  
Tong Guo ◽  
Tianliang Lin ◽  
Haoling Ren ◽  
Cheng Miao ◽  
Shengdun Zhao
Keyword(s):  
Reduction Method ◽  
Theoretical Study ◽  
Piston Pump ◽  
Load Pressure ◽  
Flow Ripple ◽  
Flow Fluctuation ◽  
Ripple Reduction ◽  
Spool Valves ◽  
The Mathematical Model ◽  
Remarkable Reduction

This paper presents a study of flow ripple reduction method of a spool valves distribution radial piston pump (SVDRPP). Relief chamfers are adopted to prolong and moderate the opening processes of the delivery spool valves, thus to relieve the pressure surges as well as the consequent flow ripples, vibrations and noises. The mathematical model of this method is established and multiple numerical simulations are conducted to analyze the mechanism as well as the effectiveness of this method. According to the simulation results, different relief chamfer angles have varying influences on flow ripple reduction. Remarkable reduction of flow fluctuation from 43.4% to 36% could be achieved, when the relief chamfer angle is set around 30°. Comparisons between the relief chamfer method and the time delay method indicate that the former has better compatibility to the load pressure lower than the rated value; while the latter has better compatibility to the higher load pressure.

Spectral-phase interference method for detecting biochemical reactions on a surface

2000 ◽  
Vol 30 (12) ◽  
pp. 1099-1104 ◽  
Author(s):  
P I Nikitin ◽  
B G Gorshkov ◽  
M V Valeiko ◽  
S I Rogov
Keyword(s):  
Spectral Phase ◽  
Interference Method ◽  
Biochemical Reactions ◽  
Phase Interference
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