Base Comparison
All designs are modeled at Iron (Class 40 Cast) (7300 Kg/m^3)
1) Solid Block
Non-Solid Vibration Modes: 7th at 115 Hz, 8th at 165 Hz
Weight: 1901 Kg
Notes: 4 inches thick
2)
Open Pockets
Non-Solid Vibration Modes: 7th at 79 Hz, 8th at 129 Hz
Weight: 1303 Kg
Notes: 4 inches thick, with open face pockets on the backsides and bottom
3) Box Coring
Non-Solid Vibration Modes: 7th at 158 Hz, 8th, 9th, and 10th modes are modeled isolation pads used to constrain the structure in the FEA. This modes are at 192 Hz
Weight: 1432 Kg
Notes: 4 inches thick, with rectangular cutout in the base