摘要
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。
Through the analysis on the anchor process of Hall anchor,the finite element model was established which described the movement of the anchor in the clay of the bottom of the sea.In the modeling,the modeling method and parameter setting were introduced and analyzed,and the influence of different types of grids on the simulation result,which include general grid division ALE-adaptive-grid division and mesh refinement division,were studied.It can be seen that the anchor depths were different with different grid division methods,and they have an influence on the calculation precision.Generally,the ALE-adaptive-grids technology can be given priority to the use and can ensure the calculation accuracy of large displacement,meanwhile,if the subdivision method is reasonable,it can guarantee good simulation accuracy.The anchor process and depths of different anchor weights are analyzed with the built model,and provide a basis for quantitative analysis of anchor.
出处
《图学学报》
CSCD
北大核心
2015年第2期193-197,共5页
Journal of Graphics
基金
北京高等学校青年英才计划资助项目(YETP0369)
中央高校基本科研业务费专项资金资助项目(FRF-TP-14-033A2)
