after the motion process of string bead was analysed, motion equation of all partles in the string bead wire was established when string bead impact pipe wall.
在分析了切割单层管道时串珠的运动过程后,建立了串珠与管壁沖击瞬间串珠绳内部各质点的运动方程。
detection principle of tension sensor for diamond string bead wire is introduced.