The paper deals with improving dynamic performance of cantilever boring bars by using so-called combination structure with tuned dynamic vibration absorber. Absorber parameters were synthesized using analytical results for cases of self-excitation and random excitation of the main system. Combination structure was designed to achieve an optimal combination of stiffness and absorber effectiveness (damping). Test results are given for the boring bar with length-to-diameter ratio L/D=15.
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