Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method

In the simulation analysis of the lily harvesting process, the intrinsic parameters of the lily bulb and the contact parameters between the lily bulb and the lily mechanized harvesting equipment (Q235 steel) are deficient. Thus, the three-axis size, density, moisture content, Poisson’s ratio, elasti...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Zhenwei Dai, Mingliang Wu, Zhichao Fang, Yongbo Qu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lily bulb discrete element method contact parameter model parameter calibration Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f008770e99dd4e59b5aacaff9dc41c30
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f008770e99dd4e59b5aacaff9dc41c30
record_format	dspace
spelling	oai:doaj.org-article:f008770e99dd4e59b5aacaff9dc41c302021-11-25T16:37:19ZCalibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method10.3390/app1122107492076-3417https://doaj.org/article/f008770e99dd4e59b5aacaff9dc41c302021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10749https://doaj.org/toc/2076-3417In the simulation analysis of the lily harvesting process, the intrinsic parameters of the lily bulb and the contact parameters between the lily bulb and the lily mechanized harvesting equipment (Q235 steel) are deficient. Thus, the three-axis size, density, moisture content, Poisson’s ratio, elastic modulus, and other parameters of lily bulbs are measured in this paper with lily bulbs as the research object. Moreover, the discrete element model of the lily bulb was established using 3D scanning technology. The contact parameters between the lily bulb and Q235 steel were calibrated through bench test and simulation parameter test. The relative error between the measured value of the lily bulb accumulation angle and the simulated value is taken as response value to calibrate three parameters (collision recovery coefficient, static friction coefficient, and dynamic friction coefficient between lily bulbs). A regression model of the relative error of the stacking angle and three parameters is established, and the response surface is optimized. The results demonstrate that collision recovery coefficient, static friction coefficient, and dynamic friction coefficient between lily bulb and Q235 steel are 0.301, 0.423, and 0.063, respectively; these coefficients between lily bulbs are 0.455, 0.425, and 0.158, respectively. Additionally, a better combination of parameters is adopted to perform the simulation stacking test. The measured stacking angle is 32.31°, which is 0.34% in error with the stacking angle obtained by the physical stacking test. The test results suggest that the discrete element model and contact parameters of the lily bulb can be used in the discrete element simulation test. Furthermore, these research results could provide references for simulation tests, such as mechanized harvesting and post-harvest processing, of lily.Zhenwei DaiMingliang WuZhichao FangYongbo QuMDPI AGarticlelily bulbdiscrete element methodcontact parametermodelparameter calibrationTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10749, p 10749 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lily bulb discrete element method contact parameter model parameter calibration Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	lily bulb discrete element method contact parameter model parameter calibration Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Zhenwei Dai Mingliang Wu Zhichao Fang Yongbo Qu Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
description	In the simulation analysis of the lily harvesting process, the intrinsic parameters of the lily bulb and the contact parameters between the lily bulb and the lily mechanized harvesting equipment (Q235 steel) are deficient. Thus, the three-axis size, density, moisture content, Poisson’s ratio, elastic modulus, and other parameters of lily bulbs are measured in this paper with lily bulbs as the research object. Moreover, the discrete element model of the lily bulb was established using 3D scanning technology. The contact parameters between the lily bulb and Q235 steel were calibrated through bench test and simulation parameter test. The relative error between the measured value of the lily bulb accumulation angle and the simulated value is taken as response value to calibrate three parameters (collision recovery coefficient, static friction coefficient, and dynamic friction coefficient between lily bulbs). A regression model of the relative error of the stacking angle and three parameters is established, and the response surface is optimized. The results demonstrate that collision recovery coefficient, static friction coefficient, and dynamic friction coefficient between lily bulb and Q235 steel are 0.301, 0.423, and 0.063, respectively; these coefficients between lily bulbs are 0.455, 0.425, and 0.158, respectively. Additionally, a better combination of parameters is adopted to perform the simulation stacking test. The measured stacking angle is 32.31°, which is 0.34% in error with the stacking angle obtained by the physical stacking test. The test results suggest that the discrete element model and contact parameters of the lily bulb can be used in the discrete element simulation test. Furthermore, these research results could provide references for simulation tests, such as mechanized harvesting and post-harvest processing, of lily.
format	article
author	Zhenwei Dai Mingliang Wu Zhichao Fang Yongbo Qu
author_facet	Zhenwei Dai Mingliang Wu Zhichao Fang Yongbo Qu
author_sort	Zhenwei Dai
title	Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
title_short	Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
title_full	Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
title_fullStr	Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
title_full_unstemmed	Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method
title_sort	calibration and verification test of lily bulb simulation parameters based on discrete element method
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f008770e99dd4e59b5aacaff9dc41c30
work_keys_str_mv	AT zhenweidai calibrationandverificationtestoflilybulbsimulationparametersbasedondiscreteelementmethod AT mingliangwu calibrationandverificationtestoflilybulbsimulationparametersbasedondiscreteelementmethod AT zhichaofang calibrationandverificationtestoflilybulbsimulationparametersbasedondiscreteelementmethod AT yongboqu calibrationandverificationtestoflilybulbsimulationparametersbasedondiscreteelementmethod
_version_	1718413112967692288

Calibration and Verification Test of Lily Bulb Simulation Parameters Based on Discrete Element Method

Ejemplares similares