Sercel VE432 DPG - Ground Viscosity and Stiffness; Conversion to Normalized Units

GROUND VISCOSITY and STIFFNESS
CONVERSION TO NORMALIZED UNITS
0311385 Issue : April 1999
7-1
GROUND VISCOSITY and STIFFNESS
CONVERSION TO NORMALIZED UNITS
G
M
S
GS
S
P
base
=
×
×
4000
432
G
M
S
GV
V
P
base
=
×
×
15625
432
.
G
V
= Ground Viscosity (N/m
3
)
G
S
= Ground Stiffness (Ns/m
3
)
GS432, GV432 Values from VE432 DSD Quality Control
M
P
Baseplate Mass
S
BASE
Baseplate Surface