NIKHEF
MT group
DATE:
oktober 2000
Project ID:
LHC-B
Document ID:
......
Subject:
Normal modes stainless steel Module Cooling Tube

Prepared by:
M.J. Kraan

Notes:

Checked by:
M. Doets

Reasons for FEA:
To investigate the normal mode of the cooling tube. 

Abstract:
Calculation of the first 4 normal modes, with and without
liquid C02 inside the tube.
Dimension of the tube are: 
outer diameter: 1.1 mm
inner diameter: 0.9 mm

Material data:

Material:               Stainless Steel 
Young's modules:        207.000 MPa
Poisons ratio:          0.29
Mass density:           7800 Kg/m^3

Material:               C02 
Mass density liquid:    1000 Kg/m^3

stockist: rohre ketterer

RESULTS:
    WITHOUT C02 in the coolingtube

MODE 1
FREQ: 77 Hz
MODE 2
FREQ: 163 Hz
MODE 3
FREQ: 246 Hz
MODE 4
FREQ: 285 Hz

    WITH C02 in the coolingtube

MODE 1
FREQ: 68 Hz
MODE 2
FREQ: 146 Hz
MODE 3
FREQ: 220 Hz
MODE 4
FREQ: 254 Hz