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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
/
2014
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Article
/
Tab 1
/
Research Article
Nonlinear Free Vibration Analysis of Axisymmetric Polar Orthotropic Circular Membranes under the Fixed Boundary Condition
Table 1
The frequency under different initial displacements (
m and
kN/m
2
).
Rad/s
735.605
610.032
381.648
271.525
Hz
117.075
97.090
60.741
43.215
Rad/s
264.678
262.444
262.351
262.350
Hz
42.125
41.769
41.754
41.754