Abstract: Aiming at the severe wear of the disc hobs during tunneling construction, a modeling method on disc hob cutter rings was proposed. Based on the main wear form of the disc hob-abrasive wear, the rock trajectories and the rock breaking forces were analyzed, and the wear model of the comprehensive plastic removal mechanism and the fracture removal mechanism were established. The particle swarm optimization algorithm was used to remove the two different types. The proportions of the mechanism were optimized. Through the finite element analysis software DEFORM, the hob wear simulation model was established to simulate the actual working conditions and calculate the wear of the disc hobs. The results show that the errors between the calculated values and the actual engineering ones are less than 20%, which indicates that the wear model has good accuracy and may be used for the calculation of tool wear.

Key words: abrasive wear, disc hob, tool wear, finite element analysis

摘要： 针对盾构机用盘形滚刀在隧道掘进施工中磨损严重的现状，提出一种针对盘形滚刀刀圈磨损的建模方法。基于盘形滚刀的主要磨损形式——磨料磨损，对破岩轨迹和破岩力进行分析，建立了综合塑性去除机制和断裂去除机制的磨损模型，采用粒子群优化算法对两种不同去除机制的占比进行优化。通过有限元分析软件DEFORM建立滚刀磨损仿真模型来模拟实际工况，计算盘形滚刀磨损量。结果表明：模型计算值与实际工程值的误差小于20%，表明磨损模型具有较高的准确性，可用于刀具磨损量计算。

关键词: 磨料磨损, 盘形滚刀, 刀具磨损, 有限元分析