Seismic Response Study of L-Shaped Frame Structure with Magnetorheological Dampers

You, Jiangtao; Yang, Yang; Fan, Yuding; Zhang, Xiangcheng

doi:10.3390/app12125976

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…The MRD to be used in the RC frame's structure was made by ourselves and is the same as the MRD used in reference [31]; its mechanical property tests were carried out with the current of 0 A to 0.28 A at the interval of 0.14 A. The schematic diagram of the test loading equipment is shown schematically in Figure 3.…”

Section: Test Results Of Mrdmentioning

confidence: 99%

“…In the aspect of multidimensional vibration reduction [25][26][27] and the establishment of the dampers' calculation model [28][29][30], many scholars have done relevant research in recent years, but not many have conducted research related to the MRD. Recently, You et al [31] established the model of an L-shaped frame structure with MRDs, and studied its multi-dimensional seismic performance and torsional vibration characteristics, but they did not study the effect of the MRD on the hysteretic behavior and yield mechanism of the structures under seismic excitation. To sum up, although many innovative simulation studies have been carried out on the seismic response of frame structures with an MRD, there are still few studies on the multi-dimensional elastic-plastic calculation model and the multi-dimensional elastic-plastic seismic performance of an RC frame structures with an MRD; especially, the influence of the MRD on the cracking, yield, hysteretic behavior, and structural yield mechanism of concrete beams and columns in spatial structures is not completely clear.…”

Section: Introductionmentioning

confidence: 99%

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A Multidimensional Elastic–Plastic Calculation Model of the Frame Structure with Magnetorheological Damper

et al. 2022

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To analyze the multidimensional elastic–plastic response of the frame structure with magnetorheological (MR) dampers under strong seismic excitations, the test of the MRD was performed, the location matrix of the MRD in the frame structure was derived, and the multidimensional elastic–plastic calculation models of the frame structure with and without an MRD were established based on the three-segment variable stiffness beam. Taking a five-story reinforced concrete (RC) frame structure as an example, the multidimensional elastic–plastic calculation models were developed by MATLAB software and the dynamic time history analyses were performed under strong seismic excitations. The results show that under the seismic wave, after the MRD is installed in the structure, the maximum horizontal displacements of the top-story node of the structure in X and Y directions is reduced by 51.87% and 39.59%, respectively, and the maximum horizontal accelerations are reduced by 36.67% and 47.86%. The maximum displacements and the story drift ratios of each story of the structure are significantly reduced, and the reduction in the maximum accelerations of each story is small relatively. In the frame structure without an MRD, plastic hinges appear at the ends of most columns, and the structure is characterized by a column hinge yield mechanism. The maximum residual displacement angles of the column end in X and Y directions which reach 1.628 × 10−3 rad and 2.101 × 10−3 rad, respectively. After setting the MRD, the number of plastic hinges in X and Y directions at the column end are both reduced by 37.5%, and the residual displacement angle at some column ends are reduced to 0. The results show that the complied calculation model programs of the frame structure can effectively simulate the multi-dimensional seismic response of the structure with and without MRD.

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Section: Test Results Of Mrdmentioning

confidence: 99%