Page 121 - Improving Machinery Reliability

Machinery Reliability Audits and Reviews 93

LATERAL CRITICAL WEED ANALYSIS - ROTOR naK WE$
ROllR UT. - 568.41 LBS. ROTlR LDlGlH. 72.25 IN. ERG SPAN - 55.38 IN.
WE tu. I AT 4898 wn

.P--
M
1111
IIII
I7
I8
II

D 48 68
ROlOR LENGTH (IN.)
Figure 3-6. Undamped Mode Shape for first critical speed.

LATEnAL CRIlXCAL SPEU, ANMYSIS - ROTOR HCKIE %PES
ROTOR UT. = 568.41 LBS. ROTCN LMGTH - 72.25 IN. ERG SPAN - 55.38 IN.
WE m. z AT 1178e wn

8 28 48 88 &a
ROTOR LU(FTH (IN.)
Figure 3-7. Undamped Mode Shape for second critical speed.