摘要
针对复合地层盾构施工引起的振动导致盾构刀具损坏的问题,以实际工程的盘形滚刀为例,利用ABAQUS有限元分析软件建立了刀具模型。仿真得到了刀具模态分析结果,包括刀具在各阶模态下的固有频率、振型及刀具的变形特征。与锤击模态试验法得出的结果对比,验证了仿真的可行性。通过改变刀轴和刀圈的直径参数对刀具进行优化,提高了刀具的固有频率,改善了刀具的抗冲击振动性能。
Regarding the problem of shield hob damage brought about by vibration in composite strata construction,the model of a practical disc cutter is established with the ABAQUS finite element analysis software. And the natural frequency, the vibration mode and the deformation of the tool are obtained from the modal analysis. Compared with the results of the hammer modal test, the feasibility of the simulation is verified. Finally the tool is optimized by changing the diameter of the arbor and the ring, therefore the natural frequency of the tool is increased and the resistance performance to impact is improved.
出处
《工具技术》
北大核心
2017年第10期47-50,共4页
Tool Engineering
基金
国家高技术研究发展计划(863计划)(2012AA041802)
河南省科技攻关重点项目(122102210166)
国家留学基金委地方合作项目(201308410091)
2015年度河南省基础与前沿技术研究项目(152300410215)
关键词
盾构滚刀
振动
模态分析
有限元仿真
优化
shield hob
vibration
modal analysis
finite element
optimization
