Time-delay vibration reduction control of tension leg in submerged floating tunnel

TONG Junhui, PENG Jian, FU Xiang, SUN Hongxin

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (15) : 48-53.

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PDF(1973 KB)
Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (15) : 48-53.

Time-delay vibration reduction control of tension leg in submerged floating tunnel

  • TONG Junhui1, PENG Jian1,2, FU Xiang1, SUN Hongxin1,2
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Abstract

Based on Euler-Bernoulli beam theory and time-delay feedback control strategy, the wonlinear vibration control equation of a tension leg in submerged floating tunnel under parametric excitation was established. Using Galerkin method and linear stability analysis, stability boundary conditions of the control system under time-delay action were obtained. Effects of different control parameters on the tension leg’s vibration response were analyzed through numerical calculation. The results showed that the reasonable time-delay value and gain value can greatly reduce vibration responses of the tension leg in underwater suspension tunnel, and improve its structural stability.

Key words

tension leg / time delay / non-linear / stability

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TONG Junhui, PENG Jian, FU Xiang, SUN Hongxin. Time-delay vibration reduction control of tension leg in submerged floating tunnel[J]. Journal of Vibration and Shock, 2021, 40(15): 48-53

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