system of polar coordinates

The stress field formulation near the crack tip in a system of polar coordinates which origin at the singular point is derived in terms of complex stress intensity factor K by using complex potentials .

采用原点设置在缝端的极坐标系统，用复势函数方法推导了缝端应力场的表达式，求得应力强度因子。

Aims at grinding wheel dynamic balance measurement and control system of double heavy-fixed polar coordinates mode .

针对双配重固定半径极坐标方式的砂轮动平衡测控系统，介绍了其内部结构和工作原理；