期刊论文

Calibration of simulation physical parameters of clay loam based on soil accumulation test

Wu, M.

中文

农业工程学报

1002-6819

2019

35

12

116-123

10.11975/j.issn.1002-6819.2019.12.014

国家科技支撑计划(2014BAD11B03) 湖南省科技厅重点项目(2017NK2131) 国家麻类产业技术体系项目(CARS-16-E21) 中国农业科学院科技创新工程项目(CAAS-ASTIP-2016-IBFC).

本校为第一且通讯机构

为获取南方黏壤土的离散元仿真模型精准接触参数,构建土壤离散元仿真模型,基于土壤堆积试验,结合试验测定和EDEM软件推荐的参数构建土壤仿真模型,以休止角为响应值,采用Design Expert软件依次设计Plackett-Burman试验、最陡爬坡试验和Box-Behnken试验完成土壤仿真物理参数标定及优化。进一步通过成穴装置成穴的仿真试验与土槽试验的对比分析,验证黏壤土仿真模型的精准性。成穴试验的仿真与土槽试验结果表明,装置在仿真土壤中运动规律与土槽试验中差异较小,成型穴孔的开口纵长和有效深度的误差分别为3.98%和1.87%,模拟仿真土壤的物理力学特性与实际土壤一致,表明黏壤土的离散元仿真参数系统标定研...

In order to obtain the precise physical parameters of the discrete element simulation model of typical cultivated soil clay loam in southern China, this paper constructed a soil discrete element simulation model. Based on a soil accumulation test, this study proposed a method for combining the significance analysis and response surface method, which calibrated and optimized the simulation parameters of clay loam in southern China. Combining the results of actual test and GEMM database parameters recommended by constructing the DEM model of the ...