The most important issue for the problem of uniform cross-section bar torsion is the calculation of shear stress on the boundary of cross-section, which is very difficult.
对等截面直杆扭转问题，横截面边界上的剪应力计算是件困难的事，也是很重要的研究课题。
2
The effect of septum brace bar on the characteristic impedance of TEM cell was analyzed by boundary element method (BEM) in this paper.
采用边界元法分析了芯板支撑对TEM传输室特性阻抗的影响。
3
Quadriateral slide elements were used in analyzing to-simulate the boundary properties between soil and steel bar.