A Novel Quadrilateral-Shaped Vibration Isolation Platform and Its Application in the Offshore Floating Platform
Source abstract
Abstract
Offshore wind platforms face critical low-frequency vibration challenges requiring advanced isolation solutions. This work develops a quadrilateral-shaped vibration isolation platform (QVIP) with a quasi-zero stiffness property for floating structures, combining negative stiffness elements and optimized damping to achieve high-static-low-dynamic-stiffness. Theoretical modeling establishes the QVIP’s working principle and parametric behavior, while numerical simulations validate its ultra-low frequency (<1 Hz) suppression capabilities with time domain analysis. The design overcomes conventional trade-offs between low-frequency isolation and load-bearing capacity, offering improved stability for offshore applications compared to linear isolators. Results demonstrate effective vibration control through tailored nonlinear stiffness characteristics (e.g., 48.17% isolation efficiency, 39.48% peak amplitude reduction, and 73.14% variance reduction), suggesting practical viability for next-generation floating platforms.
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Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Structural Health Monitoring Techniques · Vibration and Dynamic Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Semiconductor Manufacturing Research, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
School of Civil Engineering, Chongqing University, Chongqing 400045, China
School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin 132012, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Shenzhen Science and Technology Program
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