Abstract
Industrial vehicles such as construction machineries are exposed to severe vibration during use, which can cause structural damage. Currently, vibration endurance testing for non-strengthen members such as doors and covers, requires the assembly of the vehicle to accurately reproduce vibration, which involves significant labor and cost. On the other hand, real time hybrid testing (RTHT), which combines real time numerical simulation and vibration testing, are expected to reduce the cost of endurance testing. In some past studies, RTHT has been used for vibration tests of large structures, such as factory piping systems and bridge piers. These studies have indicated that the application of RTHT is limited to large structures because it could be difficult to apply it to lighter structures whose natural frequencies are higher. Therefore, a trial to develop vibration reproduction system for light structure have been investigated by simulation, based on some previous studies. RTHT has been applied experimentally to a structural sample composed of frame and door, and shows fairly good performance to reproduce vibration of door using a voice coil motor (VCM), which is compact and capable. This paper describes the results of RTHT to reproduce the vibration of non-strengthen members. In this study, RTHT is applied to a structural sample consisting of a frame and a door using some VCMs to successfully reproduce door vibration.
