Design of Accelerator Girder System for Vibration Suppression
Design of Accelerator Girder System for Vibration Suppression
Design of Accelerator Girder System for Vibration Suppression
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<strong>Girder</strong> <strong>Design</strong> - Material Properties<br />
Misc. Sources<br />
Flexural <strong>Vibration</strong>:<br />
π ⎡ EI ⎤<br />
f1<br />
≈ ⎢ 3 ⎥<br />
2 ⎣ L ( M + M b)<br />
⎦<br />
S. Sharma<br />
Ambient Ground Motion<br />
NSRRC/July 21, 2005<br />
1/<br />
2<br />
* Bowden [SLAC-TN-05-028, 2002]<br />
Mechanical Engineering Group<br />
<strong>Accelerator</strong> <strong>System</strong>s Division<br />
Comparison (<strong>for</strong> same I and L)<br />
Al Steel Anocast Gr. Epoxy<br />
Frequency (M>>Mb) � E 1/2 8.3 14 6 8<br />
Thermal Bending � α/k * 0.13 0.23 0.70 0.2<br />
Thermal Expansion � α 23.4 12 16.9 2.7
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