盾构刀盘振动掘削动力学建模与仿真研究

doi:10.3901/JME.2019.05.113

机械工程学报 ›› 2019, Vol. 55 ›› Issue (5): 113-120.doi: 10.3901/JME.2019.05.113

盾构刀盘振动掘削动力学建模与仿真研究

蒋建东, 章恩光, 赵颖娣, 李聪聪, 乔欣

浙江工业大学特种装备制造与先进加工技术教育部重点实验室杭州 310032

收稿日期:2018-02-09 修回日期:2018-07-28 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: 蒋建东(通信作者),男,1974年出生,博士,教授。主要研究方向为机械动力学,机电系统设计与控制。E-mail:jiangjd@zjut.edu.cn
基金资助:
国家自然科学基金资助项目（51375456）。

Dynamic Modeling and Simulation of Shield Tunneling Cutter-head in Oscillatory Excavation

JIANG Jiandong, ZHANG Enguang, ZHAO Yingdi, LI Congcong, QIAO Xin

Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology Ministry of Education, Zhejiang University of Technology, Hangzhou 310032

Received:2018-02-09 Revised:2018-07-28 Online:2019-03-05 Published:2019-03-05

摘要/Abstract

摘要： 研究主动振动激励对盾构刀盘掘削的推进力及扭矩的影响。在加振动激励影响下，刀具与土体接触状态变化和土体结构参数不稳定，实现了盾构刀盘振动掘削减阻的效果。在数值模型中，土壤失效采用Drucker-Prager破坏准则，利用LS-DYNA软件建立了刀盘掘削土壤有限元动力学模型。刀盘在推进和圆周旋转方向分别施加主动余弦激振，对掘进过程中的刀盘推进力及扭矩曲线做了数据分析。结果表明，在旋转方向施加主动振动，掘削阻力随振幅增加而减少，能耗随振幅增加而增加。在16组正交试验中推进力、扭矩、能耗均减少。单独在旋转方向施加21.2×10^-3 rad振幅，15 Hz的余弦激励可以实现推进阻力减少24.4%，扭矩减少22.3%，能耗增加4.3%。同时在推进方向施加0.254 mm振幅，10 Hz振动频率和旋转方向6.36×10^-3 rad以及20 Hz振动频率下，推进力减少1.3%，扭矩减少6.5%，能耗减少1.5%。

关键词: LS-DYNA, 刀盘, 动力学建模, 数值仿真, 振动掘削

Abstract: Study the influence of thrust and torque in shield tunneling cutter head with oscillatory excavation. Because of the change of contact state between cutting tools with the soil body and of the instability of soil structure under the active vibration,the resistance has been reduced during shield tunneling excavation. In the numerical model, the Drucker-Prager failure criterion is adopted. The finite element dynamic model of cutter-head digging is established by LS-DYNA software. Analyzed the curve of thrust and torque during the cutter-head excavated simulation under vibration acted respectively on the forward and rotation direction. The results show that when the active vibration is applied in the direction of rotation, the cutting resistance decreases with the increase of amplitude, and the energy consumption increases with the increase of amplitude. In the 16 sets of orthogonal tests, thrust, torque and energy consumption are all reduced. One cosine vibration in 21.2×10^-3 rad amplitude and 15 Hz frequency applied to the rotation direction can reduce the propulsion resistance by 24.4% and torque by 22.3%. But energy consumption increase by 4.3%. When 0.254 mm amplitude 10 Hz frequency applied in advanced direction and 6.36×10^-3 rad amplitude 20 Hz frequency applied in rotation direction,the propulsion resistance reduced by 1.3%.And the torque reduced by 6.5%. Energy consumption reduced by 1.5%.

Key words: cutter head, dynamic modeling, LS-DYNA, numerical simulation, oscillatory excavation

中图分类号:

U455

蒋建东, 章恩光, 赵颖娣, 李聪聪, 乔欣. 盾构刀盘振动掘削动力学建模与仿真研究[J]. 机械工程学报, 2019, 55(5): 113-120.

JIANG Jiandong, ZHANG Enguang, ZHAO Yingdi, LI Congcong, QIAO Xin. Dynamic Modeling and Simulation of Shield Tunneling Cutter-head in Oscillatory Excavation[J]. Journal of Mechanical Engineering, 2019, 55(5): 113-120.

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盾构刀盘振动掘削动力学建模与仿真研究

Dynamic Modeling and Simulation of Shield Tunneling Cutter-head in Oscillatory Excavation

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