<p>Disk-drum structures jointed by bolted flanges (DDSJBFs) are core parts in aircraft engines, whose dynamic responses affect structural overall safety and service performance. However, studies on the dynamic response of DDSJBFs under base excitation are not found in available literature. In the present work, the dynamic responses for DDSJBFs subjected to base excitation are investigated both theoretically and experimentally. The kinetic energy and potential energy of disk, drum, and flange are derived according to the Kirchhoff plate, the Sanders’ shell, and the Euler-Bernoulli beam theories, respectively, where the influences of flange and the mass of bolt are taken into account. The artificial spring method is applied to model the bolted joint. The Chebyshev orthogonal polynomials are adopted as the admissible functions of disk and drum, and the Lagrange equations are used to obtain the motion equation. The motion equation is solved by using the Newmark-beta approach and the dynamic responses under base excitation are acquired. A series of experiment studies are conducted on a DDSJBF to demonstrate the correctness of established theoretical model. Finally, study results show that because the relative motion between bolted flange joint interfaces generates friction damping, increasing the excitation amplitude causes the increase of damping ratio of DDSJBFs on the whole, and the increase of resonant peak value exhibits a slowing trend. The above phenomenon becomes more evident when the number of bolt is less. With the increase of bolt mass and flange size, the resonant frequency significantly decreases, while the resonant peak value remains unchanged.</p>