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Performance evaluation of small-scale modified MR damper under cyclic loading: experimental evaluation

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Abstract

In numerous engineering domains, the magnetorheological damper, a semi-active device for vibration control is employed to generate a damping force with little power demand. This paper presents a novel approach to enhance the seismic and cyclic excitation resistance of MRD by incorporating a 3D-printed accumulator within the chamber. The proposed modified accumulator MRD (AMRD) is then compared to conventional small-scale MRD (CMRD) which already exists. The experiment utilizes the displacement control approach, with fixed displacements of 5 mm and 10 mm. The excitation frequency is varied within the range of 0.1–1 Hz. Higher excitation frequencies in both conventional MRD (CMRD) and modified accumulator MRD (AMRD) resulted in a linear rise in damping force and energy dissipation. The dissipation of energy exhibited a substantial increase when both frequency and displacement were concurrently elevated. In comparison with CMRD, AMRD resulted in a 23.76% increase in total damping force for 5 mm displacements and a 26.76% increase for 10 mm displacements. The energy dissipation was also by 24.01% and 26.87% for displacements of 5 mm and 10 mm, respectively, as a result of the AMRD. The experimental results indicate that the energy dissipation ranges of the AMRD are more promising in comparison to the CMRD. The study demonstrates that improving the performance of a CMRD can be accomplished without imposing additional design complexities or spatial constraints on an already established MRD.

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Acknowledgements

The authors would like to express their gratitude for the assistance provided by the 3D printing laboratory in the Division of Mechanical Engineering at Karunya Institute of Technology and Sciences in the fabrication of 3D component.

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S. Vivekananda Sharma: conceptualization, experiment, investigation, data analysis, and writing of the original draft. G. Hemaltaha: methodology, research design, equipment acquisition, project administration, and reviewing. Arunraj E: data analysis, reviewing and editing.

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Correspondence to E. Arunraj.

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Sharma, S.V., Hemalatha, G. & Arunraj, E. Performance evaluation of small-scale modified MR damper under cyclic loading: experimental evaluation. Multiscale and Multidiscip. Model. Exp. and Des. (2024). https://doi.org/10.1007/s41939-024-00451-1

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  • DOI: https://doi.org/10.1007/s41939-024-00451-1

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