This paper proposes three types of tuned mass damper(TMD),i.e.,cross shaped mass damper(CTMD),X shaped mass damper(XTMD),and tourbillion shaped mass damper(TTMD)with free motion in the plane.The stiffness changes,modal,and vibration responses under harmonic excitation of the three TMDs are compared and analyzed using the finite element model.The analysis results indicate that when the excitation direction of a TMD is perpendicular to the spring,the spring force exhibits a nonlinear behavior,and compared with other TMDs,TTMD has a better robustness and higher utilization efficiency.When the mass ratio is greater than 3%,the vibration suppression of TTMD is more significant.
关键词
调谐质量阻尼器/十字形调谐质量阻尼器/X形调谐质量阻尼器/旋风形调谐质量阻尼器/力学行为/动力特性
Key words
tuned mass damper(TMD)/cross-type tuned mass damper(CTMD)/X-type tuned mass damper(XTMD)/tourbillion-type tuned mass damper(TTMD)/mechanical behavior/dynamic properties