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In this work, a calculation routine was implemented in the WxMaxima software to estimate the fundamental frequency of vibration in beams, based on the Elastic Curve Theory associated with the Rayleigh Quotient. For the description of the computational routine, data from a steel bar 80 centimeters in length subjected to two loads were used: one distributed along the bar and the other concentrated in the middle of its span. A simulation was performed using the SAP2000 software. Besides, another example was used whose system consists of discrete masses and springs. In both cases, the results showed a satisfactory agreement with those obtained by the implemented routine.

Estimativa da frequência fundamental de vibração em vigas a partir da teoria da linha elástica associada ao quociente de rayleigh