中国机械工程2016，Vol.27Issue(12)：1563-1567,5.DOI:10.3969/j.issn.1004-132X.2016.12.001
基于断裂力学的TBM撑靴液压缸O形圈断裂分析
Analysis for Fracture of O-ring in Hang Hydraulic Cylinder of TBM Based on Fracture Mechanics
摘要
Abstract
To study the causes for the fracture of the O-ring in the hang hydraulic cylinder of a TBM,the maximum stress which O-ring might withstand was analyzed with fracture mechanics under different Poisson’s ratios and the initial cracks.Stress distribution of the O-ring was simulated under the actual working conditions of TBM using ANSYS.The analysis results show that in the process of practical work of the TBM,due to the complicated working conditions,the local stress of O-ring will beyond the maximum stress that may sustain before the crack rapidly propagates and it will result in the fracture of O-ring.It indicates that a larger Poisson’s ratio of O-ring of hang hydraulic cylinder may be chosen in order to avoid the fracture based on the theoretical analyses and simulation results and the initial crack must be carefully controlled.关键词
全断面岩石隧道掘进机/断裂力学/O 形圈/有限元仿真Key words
full face rock tunnel boring machine (TBM)/fracture mechanics/O-ring/fimite ele-ment simulation分类
信息技术与安全科学引用本文复制引用
李琳,张峰榕,陶建峰,刘成良..基于断裂力学的TBM撑靴液压缸O形圈断裂分析[J].中国机械工程,2016,27(12):1563-1567,5.基金项目
国家重点基础研究发展计划(973计划)资助项目(2013CB035403) （973计划）
国家自然科学基金资助项目(51375297) （51375297）
国家高技术研究发展计划(863计划)资助项目(2012AA041803) （863计划）
长安大学高速公路施工机械陕西省重点实验室开放基金资助项目(2014G1502044) （2014G1502044）
