您好，欢迎访问浙江省农业科学院 机构知识库！
浙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Calibration and Experimental Validation of Discrete Element Parameters of Fritillariae Thunbergii Bulbus

文献类型： 外文期刊

作者： Zheng, Hang 1 ; Hu, Zhaowei 3 ; Xue, Xianglei 1 ; Ye, Yunxiang 1 ; Liu, Tian 1 ; Ren, Ning 1 ; Liu, Fanyi 4 ; Yu, Guohong 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Agr Equipment, Hangzhou 310021, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Agr Equipment Hilly & Mountainous Areas So, Hangzhou 310021, Peoples R China

3.Zhejiang A&F Univ, Coll Opt Mech & Elect Engn, Hangzhou 311300, Peoples R China

4.Southwest Univ, Coll Engn & Technol, Chongqing 400715, Peoples R China

关键词： Fritillariae Thunbergii Bulbus; discrete element method; simulation model; parameter calibration; shearing; compression

期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.5； 五年影响因子：2.7 ）

ISSN：

年卷期： 2025 年 15 卷 14 期

页码：

收录情况： SCI

摘要： The development of slicing equipment for Fritillariae Thunbergii Bulbus (FTB) has been constrained by the absence of precise and reliable simulation model parameters, which has hindered the optimization of structural design through simulation techniques. Taking FTB as the research object, this study aims to resolve this issue by conducting the calibration and experimental validation of the discrete element parameters for FTB. Both intrinsic and contact parameters were obtained through physical experiments, on the basis of which a discrete element model for FTB was established by using the Hertz-Mindlin with bonding model. To validate the calibrated bonding parameters of this model, the maximum shear force was selected as the evaluation index. Significant influencing factors were identified and analyzed through a single-factor test, a two-level factorial test, and the steepest ascent method. Response surface methodology was then applied for experimental design and parameter optimization. Finally, shear and compression tests were conducted to verify the accuracy of calibrated parameters. The results show that the mechanical properties of FTB are significantly affected by the normal stiffness per unit area, the tangential stiffness per unit area, and the bonding radius, with optimal values of 1.438 x 108 Nm-3, 0.447 x 108 Nm-3, and 1.362 mm, respectively. The relative errors in the shear and compression tests were all within 5.18%. The maximum error between the simulated and measured maximum shear force under three different types of blades was less than 5.11%. The percentages of the average shear force of the oblique blade were reduced by 52.23% and 29.55% compared with the flat and arc blades, respectively, while the force variation trends for FTB remained consistent. These findings confirm the reliability of the simulation parameters and establish a theoretical basis for optimizing the structural design of slicing equipment for FTB.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：浙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台