Free Lateral Vibrations of Rectangular Bars with Many Circular Holes (Continued)

Abstract

Free lateral vibrations of rectangular bars with many circular holes are studied, in which the vibrations are produced in the direction perpendicular to the axes of holes. The boundary conditions considered are as follows : one end built-in and the other free ; built-in ends ; free ends ; hinged ends and one end built-in and the other hinged. The method used is to determine the coefficients of normal functions according to Ritz, and it is possible to obtain the frequencies of any mode. Numerical calculations are carried out for the bars with one end built-in and the other free with respect to the first and second modes, and a part of the calculated results is compared with experiments.