12.2.2 Strike Energy
The hammer body descends to the lowest position and has the largest descending
speed. According to the kinetic energy theorem, the strike energy of the hammer is
as follows:
E ¼
1
2
m
dy f
dt
2
ð12:23Þ
12.2.3 Characteristics of Pneumatic–Hydraulic Pile Driving
Hammer
According to the hydraulic circuit, the model shown in Fig. 12.7 is built on
AMESIM test platform. Because of the high pressure and high flow rate of the
hydraulic system, all valves in the design are cartridge valves. Relative to the
reversing valve, relief valve, and back pressure valve have less influence on the
Fig. 12.7 AMESIM model of hydraulic pile driving hammer
284
12 Pneumatic–Hydraulic Pile Driving Hammer
The hammer body descends to the lowest position and has the largest descending
speed. According to the kinetic energy theorem, the strike energy of the hammer is
as follows:
E ¼
1
2
m
dy f
dt
2
ð12:23Þ
12.2.3 Characteristics of Pneumatic–Hydraulic Pile Driving
Hammer
According to the hydraulic circuit, the model shown in Fig. 12.7 is built on
AMESIM test platform. Because of the high pressure and high flow rate of the
hydraulic system, all valves in the design are cartridge valves. Relative to the
reversing valve, relief valve, and back pressure valve have less influence on the
Fig. 12.7 AMESIM model of hydraulic pile driving hammer
284
12 Pneumatic–Hydraulic Pile Driving Hammer