基于ABAQUS的滚刀破岩参数对滚动力及比能的影响

发布时间：2018-05-05 22:13

本文选题：刀间距 + 贯入度　；参考：《沈阳建筑大学学报(自然科学版)》2017年05期

【摘要】：目的研究滚刀破岩过程中,贯入度与滚刀所受平均滚动力之间的相应关系,分析刀间距、贯入度以及线速度三因素对比能的影响.方法利用ABAQUS有限元仿真软件,建立双滚刀直线切割大理岩的运动模型,模拟5种不同贯入度的滚刀破岩过程,得出不同贯入度条件下滚刀所受平均滚动力的大小;基于正交试验法,选出具有代表性的三因素三水平的参数组合进行仿真,通过极差分析找出不同因素变化对比能的影响规律.结果贯入度由4 mm增加到8 mm,滚刀所受平均滚动力近似线性增长,变化平缓;贯入度由8 mm增加到12 mm,滚刀所受平均滚动力增长幅度大,变化明显.正交试验中,刀间距对比能的均值极差为0.96 MJ/m~3;贯入度对比能的均值极差为0.41 MJ/m~3;线速度对比能的均值极差为0.26 MJ/m~3.结论在刀间距和线速度保持不变的条件下,滚刀所受平均滚动力与贯入度呈正比,而与s/p比值呈反比.通过分析刀间距、贯入度以及线速度变化对比能影响的主次性,得出刀间距影响最大,其次是贯入度,线速度影响最小.研究结果为提高滚刀破岩效率提供了参考.
[Abstract]:Aim to study the relationship between the penetration and the average rolling force of the hob during the rock breaking process of the hob, and analyze the influence of three factors on the comparison energy between the blade spacing, the penetration degree and the line velocity. Method the ABAQUS finite element simulation software is used to establish the model of the double hob straight line cutting marble, and simulate the rock breaking of the 5 kinds of hob with different penetration. According to the orthogonal test method, the parameters combination of three factors and three levels is simulated, and the influence law of the contrast energy of different factors is found through the difference analysis. The results of the result are increased from 4 mm to 8 mm, and the average rolling force of the hob is approximate. Linear growth, the change is gentle, the penetration is increased from 8 mm to 12 mm, the average rolling force of the hob increases greatly and the change is obvious. In the orthogonal test, the mean difference of the contrast energy is 0.96 MJ/m~3, the mean difference of the contrast energy is 0.41 MJ/m~3, the mean difference of the line velocity comparison energy is 0.26 MJ/m~3. conclusion in the distance and line of the knife. Under the condition of constant speed, the average rolling force and penetration of the hob are in direct proportion to the s/p ratio, and the ratio is inversely proportional to the ratio of the tool spacing, penetration and line velocity. The tool spacing has the greatest influence, followed by the penetration degree, and the linear velocity has the smallest influence. The research results can provide the improvement of the rock breaking efficiency of the hob. The reference.

【作者单位】：沈阳建筑大学机械工程学院;沈阳建筑大学计划财务处;北方重工集团有限公司;
【基金】：国家十二五科技支撑计划项目(2011BAJ02B07) 教育部创新团队支持计划项目(IRT-15R45) 住房和城乡建设部项目(2015-K3-006) 沈阳市科技局项目(F16-205-1-15) 辽宁省科技厅项目(2015020149) 辽宁省教育厅项目(LJZ2016020)
【分类号】：U455.3

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