【摘要】 无单元法节点的布置合理与否对于计算结果的误差有很大影响,为减小计算误差,提高计算精度,提出一种新的无单元法节点布置方法。该方法首先通过自组织特征映射法来生成背景网格,然后依据等参变化,布置计算点,再依据无单元法节点的布置原则,通过计算点群来确定无单元节点。计算实例证明其节点布置算法便于生成合理的节点分布,提高求解精度,并将该方法应用到电机电磁场的计算中,取得了满意的结果。更多还原

【Abstract】 The errors of the solutions are greatly influenced by the distribution with nodes with element-free method.In order to reduce the errors of calculation and increase the accuracy of calculation,a new method of element-free distribution of nodes in electromagnetic field was developed in the paper.In the proposed method,firstly the self-organizing feature map was used to generate background cell;secondly the evaluation points were placed by the isoparametric transformation;at last the element-free nodes were determined by the evaluation points group.The example testifies that the method is convenient to the generation of the reasonable distribution of nodes and the high accuracy of the solutions.The method was used for the calculation of electromagnetic field for electrical machines,and the solutions are correct.更多还原