黏土条件下霍尔锚落锚过程建模与分析

通过对霍尔锚落锚过程的分析，利用有限元方法建立了霍尔锚在海底黏土中运动的有限元仿真模型。在建模过程中详细分析了建模方法和参数设定等，研究了通用网格划分、ALE 自适应网格划分和网格细化划分方法3 种不同方法对模拟结果的影响。可以看出，不同网格划分方法所计算的霍尔锚落锚深度不同，其对计算精度具有一定影响。通常情况下，优先采用ALE 自适应网格划分方法能够较好地保证计算精度。同时，使用合理的网格细化方法也能获得较好的计算精度。利用所建模型分析了不同锚重的落锚过程和深度，为落锚的定量分析提供了一定依据。

Modeling and Analysis for Anchor Process of Hall Anchor under Clay Condition

Through the analysis on the anchor process of Hall anchor, the finite element model wasestablished which described the movement of the anchor in the clay of the bottom of the sea. In themodeling, the modeling method and parameter setting were introduced and analyzed, and theinfluence of different types of grids on the simulation result, which include general grid divisionALE-adaptive-grid division and mesh refinement division, were studied. It can be seen that theanchor depths were different with different grid division methods, and they have an influence on thecalculation precision. Generally, the ALE-adaptive-grids technology can be given priority to the useand can ensure the calculation accuracy of large displacement, meanwhile, if the subdivision methodis reasonable, it can guarantee good simulation accuracy. The anchor process and depths of differentanchor weights are analyzed with the built model, and provide a basis for quantitative analysis ofanchor.