Abstract
This paper is concerned with the joint stiffness characteristics of the standard 7/24 taper interface. Experimental identification of joint stiffness parameters is performed on No. 50 tapers, using a special test setup, by implementing a frequency response function (FRF) based method for joint parameter identification, in conjunction with finite element modeling of the substructure. The effects of axial and radial loading as well as taper wear on the taper joint stiffness are examined. It is shown that taper joint stiffness nonuniformly increases with axial preloading and decreases with radial loading. Validation of the identified stiffness values is given by comparing the predicted natural frequencies of the taper assembly with experimentally measured values.
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