基于离散元法的黄鳝肉质黏结模型参数标定
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(1. 湖北工业大学湖北省农业机械工程研究设计院 ,湖北 武汉 430068; 2. 荆州市集创机电科技股份有限公司 ,湖北 荆州 434025)

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刘明勇(1985—),男,湖北工业大学副教授,博士。E-mail:lmy8508@hbut.edu.cn

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湖北省农机装备补短板核心技术应用攻关项目(编号:HBSNYT202221)


Parameter calibration of bonding model of Monopterus albus meat based on discrete element method
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(1. Hubei Agricultural Machinery Engineering Research and Design Institute , Hubei University of Technology , Wuhan , Hubei 430068 , China; 2. Jingzhou Jichuang Electromechanical Technology Co ., Ltd., Jingzhou , Hubei 434025 , China)

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    摘要:

    [目的]建立黄鳝肉质的离散元黏结模型并进行参数标定。[方法]以新鲜黄鳝肉质为研究对象,通过物理试验测得基本参数,并用质构仪对黄鳝肉质进行压缩试验,获得压缩黄鳝肉质的力学特征曲线,确定弹性阶段最大破坏力。采用 Hertz -Mindlin with bonding 模型构建黄鳝肉质的离散元黏结模型,并对相关黏结参数进行虚拟标定试验。通过单因素试验和响应面中心组合设计 (CCD)法确定黄鳝肉质黏结模型的相关参数,并将仿真结果与实测最大压缩力进行对比。[结果]黄鳝肉质黏结模型的最佳组合为单位面积法向刚度 1.523×109 N/m3、单位面积剪切刚度 1.024×109 N/m3、临界法向应力 1.061×106 Pa和临界切向应力 6.130×105 Pa。[结论]通过仿真结果与实测结果对比,二者受力变化趋势相同,误差仅为 3.48%,表明黄鳝肉质黏结模型的相关参数是准确的。

    Abstract:

    [Objective] This paper aims to establish a discrete element -based bonding model of Monopterus albus meat and calibrate the parameters.[Methods] By using fresh Monopterus albus meat as the research object,the basic parameters were measured by a physical test,and Monopterus albus meat was compressed by a texture analyzer to obtain the mechanical characteristic curve of compressed Monopterus albus meat.The maximum destructive force in the elastic stage was determined.The Hertz -Mindlin with bonding model was used to construct the discrete element bonding model of Monopterus albus meat,and virtual calibration tests were carried out on the relevant bonding parameters.The relevant parameters of the model were determined by a single factor test and central composite design (CCD ) response surface method.Finally,the simulation results were compared with the measured maximum compression force.[Results]] The optimal combination of the bonding model of Monopterus albus meat was as follows:normal stiffness per unit area,shear stiffness per unit area,critical normal stress,and critical tangential stress were 1.523×109 N/m3,1.024×109 N/m3,1.061×106 Pa,and 6.130×105 Pa.[Conclusion] By comparing the simulation results with the measured results,the stress variation trend of the two is the same,and the error is only 3.48%,which indicates that the relevant parameters of the bonding model of Monopterus albus meat are accurate.

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刘明勇,朱 林,向 雪,等.基于离散元法的黄鳝肉质黏结模型参数标定[J].食品与机械,2024,40(12):72-80.
LIU Mingyong, ZHU Lin, XIANG Xue, et al. Parameter calibration of bonding model of Monopterus albus meat based on discrete element method[J]. Food & Machinery,2024,40(12):72-80.

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  • 收稿日期:2024-05-30
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  • 在线发布日期: 2025-02-18
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