基于绝对节点坐标法的柔性绳索体建模仿真研究

Modeling and Simulation of Flexible Cable-body by Absolute Nodal Coordinate Formulation

将绝对节点坐标法应用于柔性绳索体动力学建模和仿真的研究之中,利用绳单元建立了二维悬臂梁、三维柔性网和刚-柔耦合柔性网三种模型。借助Bathe积分策略和广义极小残量法(GMRES)对长时间历程、非对称大型稀疏矩阵方程组进行了分析求解,得到了三种模型的动力学仿真结果。通过对柔性绳索体的建模和仿真研究,确立了适用于大变形、大位移柔性绳索体动力学研究的方法,并提出了该研究领域未来发展方向应是绝对节点坐标法与各向异性材料本构关系的结合。

The theory and the algorithm of the artificial neural network are applied in the research of the tech- nique and the composition, the gross mass fraction of element, the thickness of surface alloying layer as well as the absorption rate is built. The calculation results are in good agreement with the experimental results.