Difference between symentric and assymetric vibraion
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On pp. 206-212 in Nowacki's "Dynamics of Elastics Systems", a pde is solved for the transverse vibrations of a rectangular plate subject to clamped boundaries. Two equations are developed for the eigenvalues - one for the "symmetric" modes of vibration and one for the "asymmetric" modes. Although I can follow Nowacki's development, I do not understand his use of "symmetric" and "asymmetric". Can someone explain the use of these terms? Thank you.
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