Numerical analysis for critical speed of coal impacting and comminution
LI Yanhuan1,SHAO Liangshan1,XU Zhenliang2
1.School of Business Administration,Liaoning Technical University,Fuxin 123009,China;
2.China Center for Resources Statellite Date and Application,Beijing 100094,China
Abstract：The coal impacting a rigid targetplate and comminution was simulated using the finite element software LS-DYNA with an explicit algorithm based on the dynamic model of elastic collision (Hamilton variation principle).The results showed that the critical speed of the coal impacting and comminution is about 10 m/s,there is the release effect of pressure in the coal impacting and comminution at a lower speed; field of the finite element software LS-DYNA for analyzing of elastic-plastic materials is extended.The simulation results provided a guidance and a reference for understanding the impacting and comminution mechanism of coal and other materials and manufacturing effective comminuting equipments.
李艳焕1，邵良杉1，徐振亮2. 煤粒冲击粉碎临界速度的数值实验分析[J]. 振动与冲击, 2017, 36(5): 227-230.
LI Yanhuan1,SHAO Liangshan1,XU Zhenliang2. Numerical analysis for critical speed of coal impacting and comminution. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(5): 227-230.
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