[1] Ma Dengcheng, Gui Xue, Li Xuan, Ma Chenglin, et al. Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant [J]. Journal of Southeast University (English Edition), 2022, 38 (2): 158-165. [doi:10.3969/j.issn.1003-7985.2022.02.007]

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Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant()

双滚筒再生拌和站搅拌均匀性影响因素显著性 与相互作用仿真分析

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

38

Issue:

2022 2

Page:

158-165

Research Field:

Traffic and Transportation Engineering

Publishing date:

2022-06-20

Info

Title:

Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant

双滚筒再生拌和站搅拌均匀性影响因素显著性 与相互作用仿真分析

Author(s):

Ma Dengcheng¹;  Gui Xue²;  Li Xuan¹;  Ma Chenglin¹

¹ National Engineering Laboratory for Road Maintenance Equipment, Chang’an University, Xi’an, 710064, China
² Shaanxi Zhonglin Asphalt Pavement Maintenance Technology Co., Ltd., Xi’an 710000, China

马登成¹;  桂学²;  李旋¹;  马成林¹

¹ 长安大学道路养护设备国家工程实验室, 西安 710064; ² 陕西中霖沥青路面养护科技有限公司, 西安 710000

Keywords:

double-drum recycling mixing station;  mixing uniformity;  response surface method;  discrete element method;  significance and interaction analysis

双滚筒再生搅拌站;  搅拌均匀性;  响应面方法;  离散元法;  显著性与相互作用分析

PACS:

U426.52

DOI:

10.3969/j.issn.1003-7985.2022.02.007

Abstract:

To examine the influence of the structural parameters and working parameters of a double-drum regeneration mixing station on its mixing uniformity, the influence of the discrete element method and response surface method on the uniformity of the aggregate mixing when the interaction between two different factors was analyzed. A mathematical model of the influence of various factors and interactions on the coefficient of variation of the aggregates was established. The matching of each parameter was optimized with the goal of minimizing the coefficient of variation. The results show that when the aggregate particle size is different, the significance of each parameter affecting its mixing uniformity is also different. Moreover, increasing the speed and reducing the axial installation angle of the blade can reduce the coefficient of variation of the three aggregates. To obtain a good mixing uniformity, the mixing-arm phase angle when the drum inclination angle is large should be smaller than the phase angle when the drum inclination angle is small, and the mixing of large particles should not be arranged with a large mixing-arm phase angle. With a blade radial installation angle of 38°, a blade axial installation angle of 35°, a drum inclination angle of 6°, a drum rotation speed of 10 r/min, and a mixing-arm phase angle of 32°, the aggregate as a whole can exhibit the best mixing uniformity.

为研究双滚筒再生搅拌站结构参数与工作参数对搅拌均匀性的影响, 利用离散元法和响应曲面法分析了各单因素与各因素交互作用对集料搅拌均匀性的影响规律, 建立了各因素及交互作用对集料离散系数影响的数学模型, 并以离散系数最小为目标对各参数的匹配进行了优选.结果表明:集料粒径不同时, 各参数影响其搅拌均匀性的显著性不同;提高转速、减小叶片轴向安装角可以降低集料的离散系数;为获得更好的搅拌均匀性, 滚筒倾角较大时的相位角应小于滚筒倾角较小时的相位角, 大粒径颗粒的搅拌不宜布置较大的相位角;当叶片径向安装角为38°, 叶片轴向安装角为35°, 滚筒倾角为6°, 滚筒转速为10 r/min, 搅拌臂相位角为32°时, 集料整体能够获得最好的搅拌均匀性.

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Memo

Memo:

Biographies: Ma Dengcheng(1981—), male, doctor, associate professor, mdc8235@163.com.
Foundation items: The Natural Science Basic Research Plan in Shaanxi Province(No.2017JM5077), the Fundamental Research Funds for the Central Universities under Grant(No.300102259109).
Citation: Ma Dengcheng, Gui Xue, Li Xuan, et al. Simulation analysis of significance and interaction of influencing factors on mixing uniformity of double-drum recycling mixing plant[J].Journal of Southeast University(English Edition), 2022, 38(2):158-165.DOI:10.3969/j.issn.1003-7985.2022.02.007.

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