Abstract:
In this paper, the arm force rod model is built to illustrate the microscopic mechanism of acoustic excitation and the vibrational modes of higher order are discussed ulteriorly. Five main factors, the height of the liquid level, liquid density, viscosity, temperature and the size of the wine glasses, are analyzed through experiments. The result shows the relationship between liquid levels or its density and frequency of wine glasses are negatively correlated and their value verifies the theoretical model well. Except that, the result also shows liquid viscosity and temperature are negatively correlated with the frequency, and the sensitivity of different size of wine glass to the liquid level and temperature is different.