METHOD FOR SELECTION OF RESILIENT-ELASTIC DAMPING MEDIA AT MILLING BLADES OF MONO-WHEELS OF GTE

摘要

A method for selection of resilient-elastic damping media at which the space between the thin-wall plates is filled with resilient-elastic damping medium, where as the object of investigation is the model, at that the thin-wall plates simulate the blades of the GTE, the resilient-elastic damping medium is solid, the study is carried out for several different resilient-elastic damping media, the model with filled space between the thin-wall plates in installed on the measurement testbench, after that processing with milling for the thin-wall plate of the model is carried out, and the vibrogram of its vibrations is registered, by the registered signal the value of vibro-displacementat the instant of the rough tolerance cutting with the cutter tooth is evaluated, and the logarithmic coefficient of decay of free vibrations of the plate δ at idling between the cuts with two neighboring teeth of the cutter, and selection of the resilient-elastic damping medium is performed under condition of minimal vibro-displacementand the maximal logarithmic decrement of decay of free vibrations of the plate δ.