Measurement and simulation validation of numerical model parameters of fresh concrete

In the numerical simulation of the macroscopic flow of the concrete, it can optimize the performance indicators of the screw conveyor and improve the uniformity of the material to be discharged in the batch production. The discrete element method is effective. The accuracy of physical parameters of...

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Autores principales:	Zhang Ke, Yu Wenda, Li Dong, Zou Defang, Zhang Shiying
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	discrete element method fresh concrete model parameters time-dependence calibration Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/7ec19de7f73a4ac4abf36bb89cc2c704
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spelling	oai:doaj.org-article:7ec19de7f73a4ac4abf36bb89cc2c7042021-12-05T14:11:03ZMeasurement and simulation validation of numerical model parameters of fresh concrete2191-035910.1515/secm-2021-0042https://doaj.org/article/7ec19de7f73a4ac4abf36bb89cc2c7042021-08-01T00:00:00Zhttps://doi.org/10.1515/secm-2021-0042https://doaj.org/toc/2191-0359In the numerical simulation of the macroscopic flow of the concrete, it can optimize the performance indicators of the screw conveyor and improve the uniformity of the material to be discharged in the batch production. The discrete element method is effective. The accuracy of physical parameters of this method is a key issue for the reliability of the simulation results of concrete. In this study, we measured the parameters describing the interaction between gravel, mortar, as well as between these two materials and the wall (steel). The experimentally determined parameters include the particle density, size, shape, coefficient of restitution, coefficients of static, and rolling friction. The cohesion coefficient of mortar particles for batch time was obtained by comparing the spread diameter and flow time in V-funnel experiments and simulation. After these calibration steps, the DEM parameters were validated by comparison of the mass flow rate and driving power by the batch production of screw conveying in simulations and experiments. The calculated results are proved to be close to the experimental data, which demonstrates that the measured DEM parameters are of sufficient accuracy to be used in the simulation of concrete flow performance (mass flow rate, energy consumption) in the screw conveyors.Zhang KeYu WendaLi DongZou DefangZhang ShiyingDe Gruyterarticlediscrete element methodfresh concretemodel parameterstime-dependencecalibrationMaterials of engineering and construction. Mechanics of materialsTA401-492ENScience and Engineering of Composite Materials, Vol 28, Iss 1, Pp 437-452 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	discrete element method fresh concrete model parameters time-dependence calibration Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	discrete element method fresh concrete model parameters time-dependence calibration Materials of engineering and construction. Mechanics of materials TA401-492 Zhang Ke Yu Wenda Li Dong Zou Defang Zhang Shiying Measurement and simulation validation of numerical model parameters of fresh concrete
description	In the numerical simulation of the macroscopic flow of the concrete, it can optimize the performance indicators of the screw conveyor and improve the uniformity of the material to be discharged in the batch production. The discrete element method is effective. The accuracy of physical parameters of this method is a key issue for the reliability of the simulation results of concrete. In this study, we measured the parameters describing the interaction between gravel, mortar, as well as between these two materials and the wall (steel). The experimentally determined parameters include the particle density, size, shape, coefficient of restitution, coefficients of static, and rolling friction. The cohesion coefficient of mortar particles for batch time was obtained by comparing the spread diameter and flow time in V-funnel experiments and simulation. After these calibration steps, the DEM parameters were validated by comparison of the mass flow rate and driving power by the batch production of screw conveying in simulations and experiments. The calculated results are proved to be close to the experimental data, which demonstrates that the measured DEM parameters are of sufficient accuracy to be used in the simulation of concrete flow performance (mass flow rate, energy consumption) in the screw conveyors.
format	article
author	Zhang Ke Yu Wenda Li Dong Zou Defang Zhang Shiying
author_facet	Zhang Ke Yu Wenda Li Dong Zou Defang Zhang Shiying
author_sort	Zhang Ke
title	Measurement and simulation validation of numerical model parameters of fresh concrete
title_short	Measurement and simulation validation of numerical model parameters of fresh concrete
title_full	Measurement and simulation validation of numerical model parameters of fresh concrete
title_fullStr	Measurement and simulation validation of numerical model parameters of fresh concrete
title_full_unstemmed	Measurement and simulation validation of numerical model parameters of fresh concrete
title_sort	measurement and simulation validation of numerical model parameters of fresh concrete
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/7ec19de7f73a4ac4abf36bb89cc2c704
work_keys_str_mv	AT zhangke measurementandsimulationvalidationofnumericalmodelparametersoffreshconcrete AT yuwenda measurementandsimulationvalidationofnumericalmodelparametersoffreshconcrete AT lidong measurementandsimulationvalidationofnumericalmodelparametersoffreshconcrete AT zoudefang measurementandsimulationvalidationofnumericalmodelparametersoffreshconcrete AT zhangshiying measurementandsimulationvalidationofnumericalmodelparametersoffreshconcrete
_version_	1718371431665893376

Measurement and simulation validation of numerical model parameters of fresh concrete

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