CALCULATION OF THE NATURAL FREQUENCIES OF EULER BERNOULLI PERFORATED BEAM RESTING ON ELASTIC FOUNDATION

In this research work, the free vibration of Euler Bernoulli perforated beam resting on elastic foundation and the effect of number of holes and parameters of the elastic foundation on natural frequencies has been investigated. The results show that with the increase of the elastic foundation parameter, the fundamental natural frequency decreases due to the decrease the plate stiffness, and in general, by increasing the number of holes, for all of the k values (parameters of the elastic foundation), the dimensionless frequency decreases.

کلیدواژه ها:

_Beam ، Natural frequencies ، Euler Bernoulli ، Perforated ، Elastic foundation