Formally, use of system identification techniques to estimate the forces acting on the beam may give
information on hydrodynamic forces due to vortex-induced vibrations (VIVs), but no results from such attempts
for submarine pipeline spans have been reported. In this study, a pipe model with a mass ratio (mass/displaced
mass) of 2.62 is tested in a current tank. The gap ratios (gap to pipe diameter ratio) at the pipe ends are 2.0, 4.0,
6.0 and 8.0. The response of the model is measured using optical fiber strain gauges. A modal approach linked
to a finite element method is used to estimate the hydrodynamic forces from measurement. The hydrodynamic
force at the dominant response frequency is the major concern, and the lift force and added mass coefficients are
calculated. Response calculations are performed using force coefficients from the inverse force analysis and the
calculated results are in accordance with the experimental data.
LI Xiao-chao1,2* (李小超), WANG Yong-xue3 (王永学), WANG Guo-yu3 (王国玉)，JIANG Mei-rong3 (蒋梅荣), HE Xu4 (何旭)
. Identification of Hydrodynamic Forces on a Flexible Pipe Near Plane Boundary Subjected to Vortex-Induced Vibrations[J]. Journal of Shanghai Jiaotong University(Science), 2013
, 18(1)
: 44
-53
.
DOI: 10.1007/s12204-013-1367-4
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