铁道科学与工程学报2017，Vol.14Issue(8)：1743-1751,9.
TBM盘形滚刀破岩刀刃应力分布研究
Study on the stress distribution on the blade in the process of rock breaking by the TBM disc cutter
摘要
Abstract
In order to study the stress distribution on the blade in the process of rock breaking by the disc cutter, numerical simulation was used to analyze the process. Meanwhile, the stress-strain on the blade was tested in the process of rock cutting. Research results show that the blade stress decreases radially from the bottom edge and the maximum is located at the bottom edge of the blade in the process of rock breaking. The radial stress experiences Load-Peak-Unload three stages from contact to maximum penetration depth. With the change of rolling time, the symbol of blade tangential stress changes, but the radial stress keeps non-positive. When the penetration of the disc cutter increases, both radial stress and tangential stress increase, and the variation trend of tangential stress is more obvious. In addition, the radial stress on the blade is significantly greater than tangential stress.关键词
盘形滚刀/应力分布/数值模拟/应力应变测试Key words
disc cutter/stress distribution/numerical simulation/stress-strain test分类
建筑与水利引用本文复制引用
谭青,史余鹏,曾桂英,高浩,张逸超..TBM盘形滚刀破岩刀刃应力分布研究[J].铁道科学与工程学报,2017,14(8):1743-1751,9.基金项目
国家重点基础研究发展计划(973计划)项目(2013CB035401) （973计划）
国家自然科学基金资助项目(51274252) （51274252）
国家高技术研究发展计划(863计划)项目(2012AA041803) （863计划）
2017年研究生自主探索创新项目(2017zzts405) （2017zzts405）
