The voided biaxial concrete slab has been widely used in the engineering field. The slab has become a popular choice for designers\nand architects looking to reduce slab thickness and overall structure weight recently. Utilizing the empty space in the voided slab\nand introducing the structural control technology of mass damper into it, a new pounding tuned rotary mass damper (PTRMD) is\nproposed in this paper. This damper is designed to locate in the prefabricated hollow module to mitigate response of structure\nsubject to disastrous excitations. The damper combines the characteristics of pounding mechanisms (PMDs) and tuned rotary\nmass dampers (TRMDs). This is achieved by a ball rolling on a curved orbit and a fixed stroke-limiting plate. Thestructural control\nperformance of the PTRMD is studied numerically and verified experimentally. Specifically, first, the motion equations for a\nsingle-degree-of-freedom (SDOF) and multiple-degree-of-freedom (MDOF) system with PTRMDs are derived. Furthermore,\nnumerical results show that the PTRMD provides significant energy dissipation, and thus, is quite effective in reducing the\nstructure response. Besides, the PTRMD generally exhibits better control performance and robustness in terms of vibration\nsuppression compared with the TRMD proposed by the authors before. Finally, a shake-table test is conducted to verify the\ndamping effect of a PTRMD-controlled SDOF system. Pertinent results confirm the effectiveness and robustness of PTRMDs for\nstructural control.
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