An experimental model for studying dynamic responses of a rotating beam under spatially distributed random excitation
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A detailed description is given of an experimental apparatus which has been designed to investigate lateral dynamic responses of a rotating beam to spatially distributed harmonic and random excitation. In essence, the apparatus represents a laboratory model of an articulated helicopter rotor blade. Particular emphasis is placed on the design of the beam itself, and on multiple electromagnetic exciters which have been built integral with the beam. This unique aspect of the apparatus is the heart of the design of the entire system. Measurements of input and output data, which will be performed in subsequent work, will allow verification of the adequacy of the basic assumptions of linear-random-process theory as applied to beams, as well as allow a comparison with several existing beam theories that can be utilized to describe responses of beams under random loading.
KeywordsMechanical Engineer Experimental Model Fluid Dynamics Dynamic Response Output Data
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