摘要
域内积分的存在使边界无法应用的简便性受到很大的影响．本文基于区间数学的理论，提出了处理边界元域内积分的区间方法．这种方法不必进行较为繁琐的域内积分到边界积分的转化，且可给出最终结果的误差范围．经算例验证，这种方法应用方便。
The presence of domain integrals makes tactical complication on the analysis procedure, and threatens the simplicity of the boundary element method. Based on the interval analysis theory, the paper advances an interal method, which needs not the complex work of transforming domain integrals into sulface integrals,and gives the error range of the final results. Some examples demonstrate the validity of the technique.
