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首页> 外文期刊>ISIJ international >ADEM Simulation for Analysis of Particle Breakage of Irregular Shaped Particles
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ADEM Simulation for Analysis of Particle Breakage of Irregular Shaped Particles

机译：用于分析不规则形状颗粒的颗粒破裂的ADEM模拟

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摘要

Breakage behavior of irregular shaped particles was analyzed by ADEM (Advanced Distinct Element Method). This paper attempted to determine ADEM parameters to represent breakage behavior of irregular shaped particles. Compression test have been carried out experimentally to obtain information about particle breakage. In the simulation, joint spring coefficient and maximum strain were parameters for reproducing the experimental results. Pumice was chosen as a sample, and the shape was measured by 3D scanner. Obtained 3D data was converted to cluster particle which is agglomerate of primary particles. Simulation results were compared to experimental results from the view point of load-displacement curve and the shape of samples after breakage. In the simulation, the gradient of load in response to displacement obviously increases with an increase in the joint spring coefficient. Compressive strength increases with an increase in the maximum strain. Impact test was carried out to confirm whether the parameters determined by compression test can also be applied to other breakage behavior. In the impact test, a stainless steel ball was free-falling on the cluster particle from 200 or 400 mm in drop height. In experiment, the number of dropping times needed for breakage decrease with increase in falling height. Same tendency could be observed in the simulation. Breakage behavior in impact test could express by ADEM simulation using the simulation parameters obtained from compression test. According to these results, it is suggested that ADEM has a possibility to become a useful tool to analyze particle breakage behavior.
机译：不规则形状的颗粒的破坏行为通过ADEM（高级区别元法）进行分析。本文试图确定代表不规则形状颗粒破坏行为的ADEM参数。已经通过实验进行了压缩测试以获得关于颗粒破裂的信息。在仿真中，接头弹簧系数和最大应变是再现实验结果的参数。选择浮石作为样品，并通过3D扫描仪测量形状。将获得的3D数据转换为簇状颗粒，该颗粒是一次颗粒的团聚体。从载荷-位移曲线和断裂后样品的形状的角度将模拟结果与实验结果进行了比较。在仿真中，随着位移的增加，关节弹簧系数的增加明显地增加了载荷的位移梯度。抗压强度随最大应变的增加而增加。进行冲击测试以确认通过压缩测试确定的参数是否也可以应用于其他破坏行为。在冲击试验中，不锈钢球从滴落高度200或400 mm处自由落在团簇颗粒上。在实验中，断裂所需的下降次数随下降高度的增加而减少。在模拟中可以观察到相同的趋势。冲击试验中的断裂行为可以通过使用从压缩试验获得的模拟参数的ADEM模拟来表示。根据这些结果，建议ADEM有可能成为分析颗粒破碎行为的有用工具。

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  • 来源
    《ISIJ international》 |2019年第5期|820-827|共8页
  • 作者

    Shingo ISHIHARA; Junya KANO;

  • 作者单位

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577 Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ADEM; blast furnace; breakage; irregular shaped particle;

    机译：ADEM;高炉;破损;不规则形状的颗粒;

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