Abstract
As to the design process of a bell, a trial-design is performed depending on the experience of a designer or the past design data. If the trial design is not fit with the target conditions, corrections of the design should be repeated for several times, which takes too much time and cost. Numerical model is made by computer to make the corrections more speedy and efficient. The appropriateness of the numerical model can be controlled by structural modification. Prediction and adjustment of the tone of the bell can be performed in a short time, then the target value can also be carried out.
