Free Vibration Analysis of Rectangular Orthotropic Membranes in Large Deflection

Table 6

𝑎=1m, 𝑏=1m, and 𝜎_0𝑥=𝜎_0𝑦=5.0×10³KN/m².

Order	𝑚=1, 𝑛=1	𝑚=1, 𝑛=2	𝑚=2, 𝑛=1	𝑚=2, 𝑛=2	𝑚=1, 𝑛=3	𝑚=3, 𝑛=1	𝑚=3, 𝑛=3
Rad/s	240.949	380.974	380.974	481.898	538.779	538.779	722.847
Hz	38.348	60.634	60.634	76.697	85.749	85.749	115.045