Quasi-zero-stiffness (QZS) isolators possess a combination of high load capacity and low dynamic stiffness; however, their characteristics are sensitive to geometric nonlinearity, frequency-dependent dissipation, excitation amplitude and epistemic uncertainty. In this study, a new design scheme is proposed to produce t...
S. Mohammad, Yogeesh Nijalingappa, Seif Al Bustanji et al.· Sound & Vibration· 0 citations
This study presents a targeted-band design method for suppressing flexible-rotor vibration using a fractional-order fuzzy tuned mass damper. A force-excited rotor-support mode represents the host machine, while the absorber branch comprises a spring and fractional dashpot. The absorber parameters are selected to minimi...
Yogeesh Nijalingappa, A. Vasudevan, Tahir Muhammad Ali et al.· Sound & Vibration· 0 citations
Locally resonant elastic metamaterials provide subwavelength attenuation but remain sensitive to uncertainty in stiffness, damping, and fractional order. This study develops a Wasserstein distributionally robust co-design framework that jointly selects the mass split, resonance tuning, loss scales, and fractional order...
A. Vasudevan, Yogeesh Nijalingappa, Rashed Abu Hammour et al.· Sound & Vibration· 0 citations
Passive tuned mass dampers are effective near their design frequencies but can lose performance or exceed travel limits when structural properties are imprecise. This paper develops an interval type-2 fuzzy α-plane minimax method for the simultaneous allocation, tuning, and damping design of a three-absorber bank on a...
Sulieman Ibrahim Mohammad, Yogeesh Nijalingappa, Seif Al Bustanji et al.· Sound & Vibration· 0 citations
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