Influence of cutting angle on mechanical properties of rock cutting by conical pick based on finite element analysis
1
College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China
2
College of Intelligence Science and Technology, National University of Defense Technology, Changsha, 410003, China
3
Xiangtan University, Xiangtan
Corresponding author
ZQ Zhang
College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China
College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China
Mining Science 2021;28:161-173
KEYWORDS
TOPICS
ABSTRACT
In view of the current situation that it is difficult to obtain the actual cutting force received by the conical pick of Continuous-Miner and to deal with the characteristics of the cutting force. By using contact dynamics, rock mechanics, and finite element methods, based on the display dynamics analysis program ANSYS/LS-DYNA and the Holmquist-Johnson-Cook model, the contact mechanical characteristics between conical pick and rock are analyzed. The resultant force was obtained by obtaining the force curve of the conical pick under X, Y and Z directions, analysis of cutting gear cutting speed of 2.5m/s, cutting depth of 5mm, 10mm, 15mm, 20mm and 25mm, cutting angle of 30°, 35°, 40°, 45°, 50° parameters of the size of cutting force and cutting ratio energy consumption, thus, the best cutting angle of the conical pick is obtained. The conclusions are as follows: when the cutting depth and cutting speed are constant, and the cutting angle is 45°, the mean cutting force received by the conical pick is the least, the specific energy consumption is the least, and the cutting efficiency is the highest. The best cutting angle of the conical pick should be 45°; When the cutting angle and cutting speed are constant, the energy needed by the cutter to cut the rock increases with the increase of cutting depth. The research results provide a theoretical basis for improving cutting efficiency and cutting life, and for choosing cutting angle and cutting thickness.
REFERENCES (21)
1.
ANSYS/LS-DYNA Chinese Technology Support Center, 1999, Program foundation and method of application of ANSYS/LS_DYNA, Beijing Institute of Technology, 6–9.
2.
CHEN Y.W., 2021, Application of simulation technology in mechanical design and manufacture, The Southern Farm Machinery, 52 (06), 132–133.
3.
DOLIPSKI M. et al., 2017, New computer simulation procedure of heading face mining process with transverse cutting heads for roadheader automation, Archives of Mining Sciences, 62, 1.
4.
GE S.R., 2020, Shearer technology development process (seven) – cutting mechanism, China Coal, 46 (12), 15–29.
5.
GOSPODARCZYK P, KOTWICA K., STOPKA G., 2013, A New Generation Mining Head with Disc Tool of Complex Trajectory (Głowica urabiająca nowej generacji z narzędziami dyskowymi o złożonej trajektorii), Archives of Mining Sciences.
6.
GUO S.Y., WANG Y., 2021, Five key areas for industry to achieve “carbon peak, carbon neutral”, Chinese Industry and Informationization, (05), 34–38.
7.
HOLMQUIST T.J., JOHNSON Dr. G.R, COOK Dr. W.H., 1993, A computational constitutive for con-crete subjected to large strains, high strain rates and high pressure. Proceeding of the Fourteeth In-ternational Symposium on Interactics, 2, 591–600.
9.
LI Y., 2009, Study on dynamic constitutive model of concrete HJC, HeFei University of Technology.
10.
LIN L.K., XIA Y.M., WU D., 2020, A hybrid fuzzy multiple criteria decision-making approach for com-prehensive performance evaluation of tunnel boring machine disc cutter, Computers and Industrial Engineering, 149 (3), 106793.
11.
LIU C.S., LI D.G., 2017, Mechanical model and performance evaluation for cutting coal rock with cutter, Harbin Institute of Technology Press.
12.
LIU S.Y., 2009, Study on cutting performance of shearer drum and cutting system dynamics, China Uni-versity of Mining and Technology.
13.
QIAN K., WENG Y.H., 2021, Application of ANSYS/LS-DYNA in Concrete Structure Engineering, China Machine Press, 978-7-111-65074-4.
14.
QIAO Shuo, QING Lina, WU Yao, ZHU Zongming, XIE Dijie, ZHANG Longfei, 2021, Research on cobalt-rich-crust cutting mechanism of conical picks under different types of joints conditions, Marine Georesources and Geotechnology, DOI: 10.1080/1064119X.2021.1956655.
15.
SU W.L., LI X.G., XV Y. et al., 2020, Numerical simulation of concrete cutting by shield tool based on HJC model, Journal of Zhejiang University (Engineering Science), 54 (06), 1106–1114.
16.
Theoretical Mechanics Teaching and Research Group, Harbin Institute of Technology, 2016, Theoretical mechanics, China Higher Education Press, 978-7-04-045992-0.
17.
WAN L.R., GAO G.S., QIU Z.G. et al., 2021, Numerical simulation study on mechanical properties and debris separation of rock breaking with conical pick, Coal Science and Technology, 1–10 [05–24].
18.
WANG Z.J., SUN L.M., 2021, ANSYS 18.0 Finite Element Analysis Basics and Examples Tutorial, China Machine Press, 978-7-111-60854-7.
19.
WU X.T., LI Y., LI H.P., 2010, Study on the parameters of concrete HJC constitutive model, Chinese Journal of Applied Mechanics, 27 (02), 340–344, 443.
20.
ZHAO L.J., LI F.Q., WANG T., 2012, Numerical Simulation of Rock Breaking Process of Roadheader Conical pick Based on H–J–C Constitutive Model, World Science and Technology Research and De-velopment, 34 (01), 62–65.
21.
ZHU H.P., 1999, The condition of solving by “average force”, Journal of Lishui Normal College, (02), 38–39.
| eISSN: | 2353-5423 |
| ISSN: | 2300-9586 |
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
