Preliminary investigation of the vibration characteristics of a slip table

The problem of analyzing a shake table is simplified to that of a bar of constant cross section with a weight attached at any point along the bar, all subjected to a sinuaoidal force at one end of the bar. The bar, suspended by wires, represents the table. The weight used in the experiment represents any piece of equipment which might be subjected to vibration testing. The fundamental frequencies of the system and the ratio of the force acting on the weight to the input force for various weight ratios are determined analytically and experimentally. This ratio is called the transmissibility. Experimental results were good under certain conditions, but tended to have increasingly larger errors as frequencies increased.