Experimental modeling of hydrofracture in a porous compressible material

2020 ◽  
Author(s):  
G. V. Belyakov ◽  
A. A. Tairova ◽  
N. A. Iudochkin ◽  
A. S. Molokoedov
Keyword(s):  
Experimental Modeling ◽  
Compressible Material

Experimental modeling of burst fractures of the thoracolumbar spine

TRAUMA ◽  
2017 ◽  
Vol 18 (2) ◽  
pp. 46-52
Author(s):  
V.A. Radchenko ◽  
K.A. Popsuyshapka ◽  
M.Yu. Karpinsky ◽  
E.D. Karpinska ◽  
S.A. Teslenko
Keyword(s):  
Thoracolumbar Spine ◽  
Experimental Modeling ◽  
Burst Fractures

Experimental Modeling of Technetium(VII) Recovery from Raffinates after Extractive Reprocessing of Spent Nuclear Fuel

2020 ◽  
Vol 65 (12) ◽  
pp. 1928-1934
Author(s):  
A. M. Safiulina ◽  
A. V. Anan’ev ◽  
A. V. Lizunov ◽  
M. Tuiza ◽  
M. V. Logunov ◽  
...  
Keyword(s):  
Nuclear Fuel ◽  
Spent Nuclear Fuel ◽  
Experimental Modeling

Experimental modeling of adjacent parallel shield tunnels subjected to train-induced vibration loads

2021 ◽  
pp. 095440972098626
Author(s):  
Junchen Zhang ◽  
Qixiang Yan ◽  
Kai Yang ◽  
Minghui Sun
Keyword(s):  
Experimental Studies ◽  
Bimodal Distribution ◽  
Dominant Frequency ◽  
Experimental Modeling ◽  
Load Curve ◽  
Hilbert Huang Transform ◽  
Frequency Peak ◽  
Train Speed ◽  
Vibration Loads ◽  
Train Induced Vibration

Previous studies have performed numerical simulations of adjacent parallel shield tunnels under train-induced vibration loads. However, few experimental studies have been performed for the interaction mechanisms. In this study, experimental modeling is conduced to explore the interaction of adjacent parallel shield tunnels subjected to different train-induced vibration loads. A new Hilbert-Huang transform (HHT) is applied to obtain the instantaneous responses of tunnels. The results show that the acceleration of the tunnel follows the trend of the train load curve. The peak accelerations of the tunnels experience a unimodal distribution along the train speed, while the dominant frequencies of the tunnels follow a bimodal distribution. The interaction between the adjacent parallel tunnels is significant. The transform of the vibration loads to the adjacent tunnel is through the soil below the tunnel. The farther away from the train load is, the greater the train speed corresponding to the dominant frequency peak.

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