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对结构中节点的有限元微观细部分析,通常从宏观模型中隔离出节点,在ABAQUS、ANSYS等大型有限元软件中进行计算。由于这种计算方法的边界条件与实际情况差别较大,造成计算结果与实际情况差别较大。通过一种基于局部多尺度模型的节点有限元计算方法,可以精确地模拟节点的边界条件,与整体模型相比,多尺度模型占用的计算资源更少、建模工作量更小,可大大提高节点计算结果的精度。
Finite element analysis of the microstructure of the nodes, usually from the macro-model isolated nodes, ABAQUS, ANSYS and other large finite element software for calculation. Due to the large difference between the boundary conditions of this calculation method and the actual situation, the calculation results are greatly different from the actual situation. By using a node-based finite element method based on local multi-scale model, the boundary conditions of nodes can be accurately simulated. Compared with the whole model, the multi-scale model occupies less computational resources and the workload of modeling is much smaller, which can be greatly improved Node calculates the precision of the result.