Fig. 35.18 Effect of the number of weight planes on the achieved modal magnitude for the first mode when balancing at the first two critical speeds 0.06 0.05 0.04 0.03 Probability 0.02 0.01 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 Modal Magnitude(Fraction of Initial Value) DSF balance - 5 weight planes DSF balance - 10 weight planes DSF balance - 15 weight planes DSF balance - 20 weight planes DSF balance - 28 weight planes Effect of Number of Weight Planes on Reduction in Peak Value of Second Mode - Deflection Shape Balance Balancing at the First Two Critical Speeds Fig. 35.19 Effect of the number of weight planes on the achieved modal magnitude for the second mode when balancing at the first two critical speeds
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