Shock and Vibration / 2016 / Article / Tab 2

Research Article

Analytic Solution for Nonlinear Multimode Beam Vibration Using a Modified Harmonic Balance Approach and Vieta’s Substitution

Table 2

(a) Modal contributions for various excitation frequencies, . (b) Modal contributions for various excitation frequencies, .
(a)

Normalized modal contribution = 17.51525

1st mode 99.9499.8899.6799.54
2nd mode 0.050.100.290.40
3rd mode 0.010.010.040.06

(b)

Normalized modal contribution

1st mode 99.5999.7896.0378.20
2nd mode 0.360.193.5620.25
3rd mode 0.050.030.421.55