Large Deformation Finite Element Analysis on Influence of Installation Line on Keying Characteristics of Plate Anchors
In order to analyze the influence of installation line on the keying characteristics of suction embedded plate anchors,based on the coupled Eulerian-Lagrangian method,a large deformation finite element analysis technology,the chain equation is introduced through the user subroutine VUAMP to establish a plate anchor-chain-seabed interactional finite element model.The mesh size of soil model,frictional coefficient and parameters of chain equation are examined to determine the values of the parameters and compared to verify the efficiency of the model.The effects of installation angle,eccentricity ratio,soil strength and parameters of chain equation on the keying characteristics of the plate anchor are investigated taking into account the effect of the installation line.The results show that the larger the installation angle,the larger the embedment loss of the plate anchor,the smaller the final inclination angle of the plate anchor,and the final inclination angle is reciprocal with the installation angle;the embedment loss of the plate anchor decreases as the eccentricity ratio increases.For the same eccentricity ratio,the embedment loss of the plate anchor increases linearly with the increase of the installation angle;as the strength of the soil increases,the embedment loss of the plate anchor increases;when the installation angle is 15°-45°,the plate-anchor embedment loss increases with increasing parameters of chain equation;when the installation angle is greater than 45°,the embedment loss of plate anchor is not affected by parameters of chain equation.For the same installation angle,the final inclination angle of the anchor plate decreases gradually with the increase of parameters of chain equation.The research results can provide certain references for the development of offshore mooring systems.
plate anchorinstallation linekeying characteristicslarge deformation finite element analysis
万方数据
维普
