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Abstract:
The traditional ideal elasto-plastic hysteresis model performs well in controlling structural displacement, yet its effectiveness in controlling acceleration is often suboptimal. The force equilibrium relationship of a single-degree-of-freedom (SDOF) system reveals that the structural acceleration response is closely related to the damping force at peak displacement. Based on this, a notched bilinear hysteretic model was proposed to make the damping force zero at peak displacement. The displacement and acceleration responses were compared with those of a traditional ideal elasto-plastic model by slowly varying the SDOF parameters to obtain steadystate results. An algorithm for the proposed hysteretic model was established using MATLAB, its integrated control effect on the displacement and acceleration responses of the SDOF was verified by a nonlinear time history analysis, and its optimal control interval and parameters were obtained. A damping device was subsequently developed based on the characteristics of the notched bilinear hysteretic model and its feasibility and mechanical properties were verified through experimental studies. The results showed that a well-designed notched bilinear hysteretic model can effectively control structural displacement while achieving effective control of the acceleration response, thus enabling dual control of both structural displacement and acceleration.
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JOURNAL OF SOUND AND VIBRATION
ISSN: 0022-460X
Year: 2025
Volume: 608
4 . 7 0 0
JCR@2022
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 6
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