Design of Compressor Suspension Systems Using Modal Analysis

A modal analysis procedure is used to model suspended compressors and their excitation forces. The modal method evaluates the dynamic spring forces, modal spring forces, and modal forcing function to determine the effects of a change in suspension configuration on transmitted spring forces. Valuable design insight is gained since the modal parameters explain the behavior of suspension systems during steady state compressor motion concisely. Also, many suspension configuration~ can be analyzed due to the cost effectiveness of the modal procedure. A parameter study is done to illustrate an application of the procedure.