摘要
以微型隧道掘进机窄型平刃刀圈为研究对象,根据滚刀的受力特点进行结构设计,然后在Workbench协同仿真平台下进行应力计算和疲劳寿命预测。研究表明:设计的最大工作载荷为100k N的滚刀刀圈完全满足疲劳寿命要求;经过一定的循环次数后,疲劳破坏首次出现在刀圈的最大变形处;刀圈的疲劳寿命受作用载荷的大小和变化幅度的共同影响。这为微型掘进机在短距离、小洞径隧道的广泛应用,提供了理论依据。
Taking the narrow flat cutter ring of micro tunnel boring machine（Micro-TBM）as the research object, the structural design is carried out according to the force characteristics of the cutter ring, and then the stress calculation and fatigue life prediction are carried out under the Workbench collaborative simulation platform. The results show that the designed cutter ring with maximum working load of 100KN fully meets the requirements of fatigue life; after a certain number of cycles, the fatigue failure occurs for the first time at the maximum deformation of the tool ring; the fatigue life of the tool ring is affected by the magnitude and amplitude of the applied load. It provides a theoretical basis for the wide application of Micro-TBM in short distance and small diameter tunnels.
出处
《现代制造技术与装备》
2017年第12期1-4,共4页
Modern Manufacturing Technology and Equipment
关键词
微型掘进机
刀圈结构设计
仿真分析
疲劳寿命
Micro-TBM, cutter ring structure design, simulation analysis, fatigue life
