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

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