本文提出用间接边界元法计算任意界面的永久磁铁所产生的空间磁场，推导出其磁场计算公式。

In this paper, an IBEM (Indirect Boundary Element Method) is presented for calculating permanent magnet field, and the formula of calculating magnetic field intensity is deduced.

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本文提出的边界元相似子域法也可以推广应用于夹杂相外缘附有界面层结构的复合材料的数值模拟。

The similar subdomain BEM presented in this paper can also be successfully applied to the numerical simulation of the composite materials with different interphase layer.

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与四节点单元相结合，提出一种求解自由边界面端部广义应力强度因子的杂交元法。

Combining general four-node element around crack tip element, a hybrid-stress finite element model is developed, Accordingly a hybrid finite element method to fo.

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