Abstract
The diamond sawblade has been widely used in the field of rock mining and processing. This article, through the establishment of a numerical simulation model of diamond sawblade cutting rock, studies the influence of the distance between the diamond sawblade and free surface on cutting performance. In the process of diamond sawblade cutting rock, with the increase of the distance from the sawblade to the free surface, the average cutting force, normal force, and tangential force of the sawblade increase at first and then stabilize, and the axial force gradually decreases and tends to be stable. In the process of cutting rock with fixed depth, cutting force and rock damage are positively related to feed speed and cutting depth of the diamond sawblade. Through the statistical analysis of rock damage by image recognition program statistics, it is concluded that the feed speed and cutting depth of the sawblade have a significant impact on the rock damage value. When the distance increases to 12 mm, there is a relatively complete rock plate between the sawblade and free surface. The rock free surface damage disappears when distance reaches 16 mm. The research results provide a theoretical basis for the sawblade processing rock plate.
Highlights
Rocks are widely used in construction, bridge, and other fields. e mining and processing of rocks have become the important contents of many researchers. e diamond sawblades are the tools mainly used in the rock processing
Based on the research of the rock cutting process with the diamond sawblade, this study focuses on rock damage, defines rock material as MAT_RHT, and regards MAT_RIGID material as the diamond sawblade
Based on ANSYS/LS-DYNA, this article establishes the numerical model of rock cutting with the diamond sawblade and studies the influence of the distance between the diamond sawblade and free surface on cutting performance
Summary
Rocks are widely used in construction, bridge, and other fields. e mining and processing of rocks have become the important contents of many researchers. e diamond sawblades are the tools mainly used in the rock processing. Many scholars have made tremendous research studies on the process of rock cutting with the diamond sawblade. Yurdakul studied the influence of the cutting mode and feed rate on cutting efficiency and cutting amount; the investigation found that the cutting consumption of the down-cutting mode is less by valuing the sawblade cutting large rock [3], as well as the relations between cutting specific energy consumption and cutting parameters [4]. Buyuksagis studied the influence of diamond saw segment characteristics on cutting performance and built the predict function about the specific energy with simple rock property test procedures [7] and the cutting parameters on cutting specific energy consumption wear by the experiments [8]
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