基于EDEM的双锅曲毫机仿真试验
|
摘要
利用Solidworks建立了双锅曲毫机的3D几何模型,基于离散元法建立茶叶颗粒的颗粒模型和接触力学模型。将上述模型导入EDEM软件中,并根据实际珠茶炒制工艺设置关键技术参数。以提高珠茶成形率和降低珠茶碎茶率为目标,对炒板关键运动学参数摆幅及摆速进行了仿真计算,得到了珠茶颗粒在成形过程中的运动学及动力学曲线。为验证仿真的正确性,设计了二因素三水平正交试验,结果表明:珠茶做形品质的主要影响因素依次为摆速和摆幅。当弧形炒板的摆速为85r/min,摆幅为80°时,珠茶颗粒的成形率为91.1%,碎茶率为6.5%,同时具有较好的成茶品质。EDEM仿真与正交试验结果基本一致。
Because traditional design method is difficult to analyze the movement process of gunpowder tea particles in frying pan,the 3 Dgeometric model of the double-pan roasting machine was designed based on Solidworks,the tea particle model of geometric and contact mechanics was established based on the discrete element method,the models were imported into EDEM,and the key technical parameters were set up according to the actual frying process of gunpowder tea.The swing amplitude and swing speed of the key kinematics parameters of the frying plate were simulated based on EDEM in order to improve the shaping rate of gunpowder tea and reduce the broken rate of gunpowder tea,the kinematics and dynamics curves of gunpowder tea particles in the shaping process were obtained.The orthogonal experiment of 2 factors and 3 levels was designed in order to test the correctness of the simulation.The results showed that:the main factors affecting the shaping quality of gunpowder tea were swing speed and swing amplitude respectively.The shaping rate of gunpowder tea was 91.1% and the broken rate of gunpowder tea was 6.5%,when the swing speed of the frying plate was 85 r/min and the swing amplitude was 80 degrees,the tea quality was good.The EDEM simulation results were basically consistent with the orthogonal test results.
Because traditional design method is difficult to analyze the movement process of gunpowder tea particles in frying pan,the 3 Dgeometric model of the double-pan roasting machine was designed based on Solidworks,the tea particle model of geometric and contact mechanics was established based on the discrete element method,the models were imported into EDEM,and the key technical parameters were set up according to the actual frying process of gunpowder tea.The swing amplitude and swing speed of the key kinematics parameters of the frying plate were simulated based on EDEM in order to improve the shaping rate of gunpowder tea and reduce the broken rate of gunpowder tea,the kinematics and dynamics curves of gunpowder tea particles in the shaping process were obtained.The orthogonal experiment of 2 factors and 3 levels was designed in order to test the correctness of the simulation.The results showed that:the main factors affecting the shaping quality of gunpowder tea were swing speed and swing amplitude respectively.The shaping rate of gunpowder tea was 91.1% and the broken rate of gunpowder tea was 6.5%,when the swing speed of the frying plate was 85 r/min and the swing amplitude was 80 degrees,the tea quality was good.The EDEM simulation results were basically consistent with the orthogonal test results.
引文
[1]安徽农学院.制茶学[M].合肥:中国农业出版社,1989:80-83.
[2]权启爱,姚作为.我国珠茶炒干机的研制和发展[J].中国茶叶,2018,40(1):15-19.
[3]李洪昌,李耀明,唐忠,等.基于EDEM的振动筛分数值模拟与分析[J].农业工程学报,2011,27(5):117-121.
[4]廖庆喜,张朋玲,廖宜涛,等.基于EDEM的离心式排种器排种性能数值模拟[J].农业机械学报,2014,45(2):109-114.
[5]王倩,李尚庆,范阳阳,等.基于Pro/E的茶叶双锅曲毫炒干机等的虚拟装配设计[J].农机化研究,2013,35(5):155-158.
[6]赵章风,任超,郑劲松,等.球形茶炒制设备的做功效率与茶叶成形关系研究[J].茶叶科学,2018,38(5):527-536.
[7]申东,牟春林,何萍,等.不同投叶量对珠形茶造形技术的影响[J].贵州科学,2012,30(2):62-66.
[8]王润龙.双锅曲毫炒干机加工绿茶技术[J].茶叶通讯,2005(4):50-51.
[9]胡国明.颗粒系统的离散元素法分析仿真:离散元素法的工业应用与EDEM软件简介[M].武汉:武汉理工大学出版社,2010:9-11.
[10]刘文政,何进,李洪文,等.基于离散元的微型马铃薯仿真参数标定[J].农业机械学报,2018,49(5):125-135.
[11]韩丹丹,张东兴,杨丽,等.基于EDEM-CFD耦合的内充气吹式排种器优化与试验[J].农业机械学报,2017,48(11):43-51.
[12]鹿芳媛,马旭,齐龙,等.基于离散元法的杂交稻振动匀种装置参数优化与试验[J].农业工程学报,2016,32(10):17-25.
[13]陈进,周韩,赵湛,等.基于EDEM的振动种盘中水稻种群运动规律研究[J].农业机械学报,2011,42(10):79-83.
[14]万星宇,舒彩霞,徐阳,等.油菜联合收获机分离清选差速圆筒筛设计与试验[J].农业工程学报,2018,34(14):27-35.
[15]ZHAO Tao,DAI Feng,XU Nu-wen,et al.A composite particle model for non-spherical particles in DEMsimulations[J].Granular Matter,2015,17(6):763-774.
[16]FERELLECJ F,MCDOWELL G R.A simple method to create complex particle shapes for DEM[J].Geomechanics and Geoengineering,2008,3(3):211-216.
[17]朱志楠,赵章风,钟江,等.基于多相流耦合过程数值模拟的茶鲜叶离心式连续脱水设备参数模拟与优化[J].茶叶科学,2017,37(3):280-289.
[18]顿国强,陈海涛,冯夷宁,等.基于EDEM软件的肥料调配装置关键部件参数优化与试验[J].农业工程学报,2016,32(7):36-42.
[19]赵章风,张立彬,汪晓华,等.茶叶圆筛条件分析与过程数值模拟[J].茶叶科学,2014,34(1):1-8.
[20]CLEARY P W.Industrial particle flow modelling using discrete element method[J].Engineering Computations,2009,26(6):698-743.
[21]丁力,杨丽,刘守荣,等.辅助充种种盘玉米气吸式高速精量排种器设计[J].农业工程学报,2018,34(22):1-11.
[22]潘科,牟小秋,崔鑫霞,等.投叶量对贵州珠形茶品质形成的影响[J].贵州科学,2011,29(6):59-64.
[23]盖钧镒.实验统计方法[M].北京:中国农业出版社,2000:96-104.
[2]权启爱,姚作为.我国珠茶炒干机的研制和发展[J].中国茶叶,2018,40(1):15-19.
[3]李洪昌,李耀明,唐忠,等.基于EDEM的振动筛分数值模拟与分析[J].农业工程学报,2011,27(5):117-121.
[4]廖庆喜,张朋玲,廖宜涛,等.基于EDEM的离心式排种器排种性能数值模拟[J].农业机械学报,2014,45(2):109-114.
[5]王倩,李尚庆,范阳阳,等.基于Pro/E的茶叶双锅曲毫炒干机等的虚拟装配设计[J].农机化研究,2013,35(5):155-158.
[6]赵章风,任超,郑劲松,等.球形茶炒制设备的做功效率与茶叶成形关系研究[J].茶叶科学,2018,38(5):527-536.
[7]申东,牟春林,何萍,等.不同投叶量对珠形茶造形技术的影响[J].贵州科学,2012,30(2):62-66.
[8]王润龙.双锅曲毫炒干机加工绿茶技术[J].茶叶通讯,2005(4):50-51.
[9]胡国明.颗粒系统的离散元素法分析仿真:离散元素法的工业应用与EDEM软件简介[M].武汉:武汉理工大学出版社,2010:9-11.
[10]刘文政,何进,李洪文,等.基于离散元的微型马铃薯仿真参数标定[J].农业机械学报,2018,49(5):125-135.
[11]韩丹丹,张东兴,杨丽,等.基于EDEM-CFD耦合的内充气吹式排种器优化与试验[J].农业机械学报,2017,48(11):43-51.
[12]鹿芳媛,马旭,齐龙,等.基于离散元法的杂交稻振动匀种装置参数优化与试验[J].农业工程学报,2016,32(10):17-25.
[13]陈进,周韩,赵湛,等.基于EDEM的振动种盘中水稻种群运动规律研究[J].农业机械学报,2011,42(10):79-83.
[14]万星宇,舒彩霞,徐阳,等.油菜联合收获机分离清选差速圆筒筛设计与试验[J].农业工程学报,2018,34(14):27-35.
[15]ZHAO Tao,DAI Feng,XU Nu-wen,et al.A composite particle model for non-spherical particles in DEMsimulations[J].Granular Matter,2015,17(6):763-774.
[16]FERELLECJ F,MCDOWELL G R.A simple method to create complex particle shapes for DEM[J].Geomechanics and Geoengineering,2008,3(3):211-216.
[17]朱志楠,赵章风,钟江,等.基于多相流耦合过程数值模拟的茶鲜叶离心式连续脱水设备参数模拟与优化[J].茶叶科学,2017,37(3):280-289.
[18]顿国强,陈海涛,冯夷宁,等.基于EDEM软件的肥料调配装置关键部件参数优化与试验[J].农业工程学报,2016,32(7):36-42.
[19]赵章风,张立彬,汪晓华,等.茶叶圆筛条件分析与过程数值模拟[J].茶叶科学,2014,34(1):1-8.
[20]CLEARY P W.Industrial particle flow modelling using discrete element method[J].Engineering Computations,2009,26(6):698-743.
[21]丁力,杨丽,刘守荣,等.辅助充种种盘玉米气吸式高速精量排种器设计[J].农业工程学报,2018,34(22):1-11.
[22]潘科,牟小秋,崔鑫霞,等.投叶量对贵州珠形茶品质形成的影响[J].贵州科学,2011,29(6):59-64.
[23]盖钧镒.实验统计方法[M].北京:中国农业出版社,2000:96-104.