Structural dynamics of rotating bladed-disk assemblies coupled with flexible shaft motions

摘要: In order to analyze the dynamic behavior of first stage compressor/fan 'E3' turbofan engine, a classical structural dynamics approach is employed couple motions flexible bladed disk rotating shaft. The analysis accounts for displacements which are transverse plane rotation, and radial as well tangential, also rigid translations along, rotations about, axes normal undeformed shaft axes. case wide range E3 engine flexibilities speeds, some one-diametral node frequencies shown be affected by degrees freedom whose stiffness values in general design practice. Coriolis forces found significantly affect natural where strong coupling between certain modes present.