采用边界元法分析弹塑性问题时，需要解决塑性域剖分单元上的强奇异积分汁算问题。
When applying BEM to elastoplastic problems, the strongly singular integrals over volume cells have to be estimated.
研究二维弹性力学问题边界积分方程，通过分部积分变换消除了常规导数边界积分方程中的超奇异积分，获得仅含强奇异积分的应力自然边界积分方程。
Hence, a new stress natural BIE is developed, in which there only exist the strongly singular integrals instead of the hypersingular integrals in the conventional stress BIE.
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