Investigation of fragment separation during a circular saw blade cutting rock based on ANSYS/LS-DYNA

被引：5
|
作者：
Wang, Zhiwen [1 ]
Zeng, Qingliang [1 ,2 ]
Wan, Lirong [1 ]
Lu, Zhenguo [3 ]
Zhou, Jun [1 ]
机构：
[1] Shandong Univ Sci & Technol, Coll Mech & Elect Engn, Qingdao 266590, Peoples R China
[2] Shandong Normal Univ, Jinan 250358, Peoples R China
[3] Shandong Univ Sci & Technol, Coll Transportat, Qingdao 266590, Peoples R China
来源：
SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期
关键词：
DIAMOND SAWS; PERFORMANCE PREDICTION; ENERGY; SAWABILITY;
D O I：
10.1038/s41598-022-22267-0
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Circular saw blades are widely used in stone processing. The circular saw blade cutting hard rock numerical simulation model based on ANSYS/LS-DYNA was established to investigate the complex dynamic problem in rock cutting. The failure mechanism of the rock and the influence of cutting parameters on the cutting force and rock fragments were studied by numerical simulation. The results demonstrated that the failure modes of the rock were mainly tensile failure with some shear failure and compressive failure. The cutting force and the number of fragments increased with the feed speed. With the increasing circular saw blade rotational speed, the cutting force and the number of fragments decreased and tended to stabilize. With the distance between the circular saw blades increasing, the cutting force and rock fragments number increase and then maintain basic stability, and when the distance between double circular saw blades reaches 25 mm, it will form a completed rock plate and the interaction of circular saw blades will decrease. The numerical simulation can accurately simulate rock breakage and force when a circular saw blade cuts rock.
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页数：18
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