Only swinging bells create a resonant and musical sound. However, swinging bells transmit considerable forces into the towers, which are often close to the towers’ natural frequencies and thus cause excessive dynamic stress.
Ringing of bells, which is close to the resonance, can cause damage over the years and decades. Structural dynamic analyses of existing towers are therefore recommended if structural damage already exists, if strong tower movements are observed or if a tower is to be provided with new bells or a new peal.
We provide consulting services on all these issues. As a result of our analyses and interpretations we prepare data sheets that allow immediate further processing by the bell founder or the structural engineer. We also carry out analyses of the sound of bells including determination of the partial tones and their decay behavior.