Abstract
Vibration pollusions caused by factory machines like a forging hammer are still one of the social problems in Japan. On the deseign of the foundation for such shock producing machine, it is necessary to consider the radiated waves caused by foundation vibration. This paper investigates, from the point of view mentioned above, dynamic response of machine foundation under impact force and radiated waves from a foundation. For this purpose the experiments were carried out using the model half space made of the RTV silicone rubber. Also the approximate method to analyze the wave radiated from the foundation under impact force was presented and applicability of this method was investigated.