Abstract
In learning the issue of vibration, it is important to know the essence of the various problems in resonance, natural frequency, natural vibration mode, and so on. However, it is really very hard to understand these phenomena. So, we started to develop the experimental equipment for the purpose of observing the vibration of mechanical systems, especially paying attention to resonance and natural vibration mode. In this study, an experimental equipment of six degrees of freedom vibration system composed of spring, mass and rigid body was developed. The feature of this teaching material is A4 size package type, which is thin and lightweight, and is easy to store and carry. By using this apparatus, we observed the primary, secondary, tertiary, quaternary, quinary and senary resonances and natural vibration modes. Furthermore, in order to verify the validity of this vibration system was simulated by using a software called DSS. As a result, the simulations agree well with the experiments. It is also found that when the vibration system becomes complicated, the manufacturing error and friction of the device greatly affect the experimental results, particularly natural vibration modes.
