Research on Initial Penetration of Torpedo Anchor into Seabed Soil
|Course||Port, Coastal and Offshore Engineering|
|Keywords||Torpedo anchor Initial buried depth Directional stability Three-dimensional numerical simulation Dynamic Analysis Fluid-structure interaction|
In the process of exploitation of oil, natural gas and other energy resources in the deep and ultra-deep waters , deep water mooring - based construction and installation costs with the deepening of the water depth increases , therefore , low cost and high uplift performance anchor mooring - based research and development have become a necessity . Torpedo anchor is easy to install , low cost and high bearing capacity , a new type of the most promising deep water mooring basis . Torpedo anchor installation process analysis, differential equations of motion process , MATLAB platform , the use of Runge - Kutta numerical algorithm for solving differential equations to obtain the the torpedo anchor anchor speed its penetration depth changes in relationships , and further study of the nature of sea Chuangtu body , install the release height , anchor size (ie anchor weight) torpedo anchor the initial penetration depth penetration sea Chuangtu body , a number of laws . Secondly, the use of the basic theory of hydrodynamic stability of a brief analysis of the direction of the torpedo anchor installation process . Finally, the finite element software ANSYS / LS - DYNA program , the soil as an elastic-plastic material , the use of non-reflective boundary ( non -reflection boundary ) , establish a dynamic numerical analysis model of the torpedo anchor installation process , the main sea - bed soil body nature of the torpedo anchor installation initial penetration depth and speed torpedo anchor penetration depth and time history curve . By contrast, the analytical calculation are in good agreement with the numerical results .