Electron–Ion Impact Energy Transfer in Nanoplasmas of Coulomb Exploding Clusters

2017 ◽  
pp. 27-52 ◽  
Author(s):  
Isidore Last ◽  
Joshua Jortner
Keyword(s):  
Energy Transfer ◽  
Impact Energy ◽  
Ion Impact

Efficiency of impact energy transfer through a drill coupling

1976 ◽  
Vol 12 (3) ◽  
pp. 342-344
Author(s):  
M. S. Safokhin ◽  
V. G. Chikin
Keyword(s):  
Energy Transfer ◽  
Impact Energy

Impact compression behaviors of high-capacity long piles

2010 ◽  
Vol 47 (12) ◽  
pp. 1335-1350 ◽  
Author(s):  
Arthur K.O. So ◽  
Charles W.W. Ng
Keyword(s):  
Energy Transfer ◽  
Impact Velocity ◽  
Stress Wave ◽  
Impact Energy ◽  
High Capacity ◽  
Measured Data ◽  
Impact Compression ◽  
Impact Forces ◽  
The Impact ◽  
Pile Length

The Hiley formula underestimates driving resistance of long piles. Methods using affected pile length have been suggested, but have been found to be inapplicable for high-capacity piles. The impact compression behaviors of about 4700 high-capacity H-piles that were 14–80 m long at final set were studied. Measured data revealed that maximum impact forces are very scattered, but their means are independent of the hammer type, ram weight, ram drop, impact velocity, and pile length. Maximum impact compression of pile and affected pile length exist in both long and short piles. The affected pile length in turn is significant to the blow efficiency, hammer constant, and energy transfer ratio. This length is governed by the impact momentum and impact energy, and can be estimated by an energy-based equation. If the affected pile length determined by this equation is substituted into the Hiley formula to back-analyze the driving resistance, predictability of the driving formula can be improved by about 8%. This improvement is significant enough to reduce the number of hammer blows required at very hard driving conditions and reduce pile damage. Furthermore, this proposed equation is simple to use in the field and is more economical compared with stress-wave monitoring techniques.

Modeling Impact Energy Transfer through Closed Chamber Filled with Fluid

2018 ◽  
Vol 54 (6) ◽  
pp. 959-968
Author(s):  
V. E. Erem’yants ◽  
B. S. Sultanaliev ◽  
Nazira kyzy Melis
Keyword(s):  
Energy Transfer ◽  
Impact Energy ◽  
Closed Chamber

Ion‐Impact Energy‐Loss Spectrum of Oxygen

1971 ◽  
Vol 55 (6) ◽  
pp. 2760-2764 ◽  
Author(s):  
John H. Moore
Keyword(s):  
Energy Loss ◽  
Impact Energy ◽  
Ion Impact

Numerical study on impact energy transfer and rock damage mechanism in percussive drilling based on high temperature hard rocks

Geothermics ◽  
2021 ◽  
Vol 96 ◽  
pp. 102215
Author(s):  
Hengyu Song ◽  
Huaizhong Shi ◽  
Zhenliang Chen ◽  
Gensheng Li ◽  
Ran Ji ◽  
...  
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Impact Energy ◽  
Numerical Study ◽  
Damage Mechanism ◽  
Rock Damage ◽  
Percussive Drilling ◽  
Hard Rocks
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