Free Vibration of Castellated Beams with Web Shear and Rotary Inertia Effects

This paper presents analytically obtained free vibration frequencies of castellated beams, that take into account the effects of both web shear and rotary inertia. The results show that the rotary inertia effect on the free vibration frequencies is very important for beams with no or weak effect from web shear. However, for beams where the web shear effect is dominant the rotary inertia effect can be almost ignored.