Finite element analysis of coupling effects of weight on bit and vibration amplitude on ultrasonic vibration assisted drilling rock

被引：0
作者：
Dai, Jianbo [1 ,2 ]
Wang, Zhongbin [1 ,2 ]
Yin, Xilu [1 ,2 ]
Zhou, Wenbo [3 ]
Zhang, Lei [1 ]
Song, Yuyu [3 ]
Si, Lei [1 ,2 ]
Wei, Dong [1 ,2 ]
机构：
[1] China Univ Min & Technol, Coll Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Jiangsu Collaborat Innovat Ctr Intelligent Min Eq, Xuzhou 221008, Jiangsu, Peoples R China
[3] Syst Engn Inst Sichuan Aerosp, Chengdu 610100, Peoples R China
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2024年 / 38卷 / 11期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Ultrasonic vibration; Weight on bit; Ultrasonic amplitude; Stress evolution; Damage distribution; CRITERION; DYNAMICS; STRESS;
D O I：
10.1007/s12206-024-1008-x
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Ultrasonic vibration as a novel and advanced auxiliary lithotripsy technology possesses great potential in the fields of deep mine drilling. This paper carries out a finite element (FE) analysis to investigate the coupling effects of weight on bit (WOB) and ultrasonic vibration amplitude on the ultrasonic vibration assisted drilling (UVAD) of hard rock. The critical model of WOB and amplitude for hard rock breaking is established to explore the coupling effects quantitatively. The results show that the ultrasonic-frequency axial percussive motion significantly enhances the drilling rate. During the UVAD process, the principle stress undergoes severe fluctuation, constituting more than 50 % of the maximum principal stress, and larger ultrasonic amplitudes correspond to more pronounced stress fluctuations. There are critical coupling values of WOB and ultrasonic amplitude for the rock breaking, with the amplitude increases from 0 mu m to 15 mu m, the critical WOB for rock breaking reduces by 25 %.
引用
收藏
页码：5853 / 5865
页数：13
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