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Numerical Study on Concrete Pumping Behavior via Local

Numerical simulation of concrete pumping process and …

1/2/2012 · A numerical simulation based on CFD and DEM has been conducted to study the solid–fluid multi-phase flow problem in concrete pumping progress. It is shown that the model can satisfactorily capture the key features in concrete pumping and predict …

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Numerical Study on Concrete Pumping Behavior via Local …

To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed.

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Overview on the truck mounted concrete boom pump: a …

1/1/2011 · This numerical model can simulate the typical operating condition of concrete pump booms. 4.THE CONCRETE PUMPING UNIT ( y O x ) . Thanks to the assumption of planar motion, each j j j FEM node is described by a vector, d independent coordinates jk, with three the vector ( x, y, ) .

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Materials | Free Full-Text | Numerical Study on Concrete …

Zhan, Yijian, Jian Gong, Yulin Huang, Chong Shi, Zibo Zuo, and Yiqun Chen. 2019. "Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method" Materials 12, no. 9: 1415. https://doi.org/10.3390/ma12091415

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Numerical Study on the Applicability of Design-Oriented …

This study examined the accuracy of 14 design-oriented stress-strain models of fiber-reinforced polymer (FRP)-confined concrete from the available literature to predict the cyclic responses of nine circular reinforced concrete (RC) columns. The examined columns

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Numerical Simulation of Working Characteristics of Concrete …

[11] Yijian,Zhan,Jian,et al.Numerical Study on Concrete Pumping Behavior via Local Flow SimulationwithDiscreteElementMethod.[J].Materials(Basel,Switzerland),2019. [12] Mechtcherine V,Gram A, Krenzer K,et al.Simulation of fresh concrete flow using Discrete

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Materials | Free Full-Text | Numerical Study on Concrete …

30/4/2019 · Mechanical Properties and Seismic Performance of Wood-Concrete Composite Blocks for Building Construction Previous Article in Journal Study of the Structural and Magnetic Properties of Co-Substituted Ba 2 Mg 2 Fe 12 O 22 Hexaferrites Synthesized by Sonochemical Co-Precipitation

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Figure 14 from Numerical Study on Concrete Pumping …

- "Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method" Figure 14. Clump templates used to create concrete aggregates with shape factors equal to: (a) 1.5; (b) 2.5; (c) 3.5; and (d) 4.5.

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Numerical assessment for impact strength …

1/2/2009 · Itho M, Katayama M, Mitake S, Niwa N, Beppu M, Ishikawa N. Numerical study on impulsive local damage of reinforce concrete structures. In: Proceedings of the structures under shock and impact, Cambridge; 2000.

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Overview on the truck mounted concrete boom pump: a …

1/1/2011 · This numerical model can simulate the typical operating condition of concrete pump booms. 4.THE CONCRETE PUMPING UNIT ( y O x ) . Thanks to the assumption of planar motion, each j j j FEM node is described by a vector, d independent coordinates jk, with three the vector ( x, y, ) .

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1. Introduction

In this paper, the local pumping test was selected for DEM simulation to study the flow behavior of concrete in the process of passing through the bend pipe. The pumping concrete model based on DEM with detailed configuration is shown in Figure 16.

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Numerical assessment for impact strength …

1/2/2009 · Itho M, Katayama M, Mitake S, Niwa N, Beppu M, Ishikawa N. Numerical study on impulsive local damage of reinforce concrete structures. In: Proceedings of the structures under shock and impact, Cambridge; 2000.

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Effect of lubrication layer on velocity profile of concrete …

22/1/2015 · The rheology of concrete is predominant for the required pressures in a pumping pipe. However, more detailed information is required on the formation and the properties of the lubrication layer near the pipe surface, in order to be able to accurately predict the pressure-discharge relation. By means of experimental research in combination with advanced numerical simulations, the lubrication

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Effect of lubrication layer on velocity profile of concrete …

22/1/2015 · The rheology of concrete is predominant for the required pressures in a pumping pipe. However, more detailed information is required on the formation and the properties of the lubrication layer near the pipe surface, in order to be able to accurately predict the pressure-discharge relation. By means of experimental research in combination with advanced numerical simulations, the lubrication

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Study on the Heterogeneity of Concrete and Its Failure …

Taking the heterogeneity character of concrete into account, this paper presents an equivalent probabilistic model for failure study of concrete in which the heterogeneity of concrete is considered by assuming that the material properties conform to the Weibull

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[PDF] Numerical Study on Concrete Pumping Behavior via …

To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed.

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Numerical Study on Concrete Pumping Behavior via Local …

Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method By Yijian Zhan, Jian Gong, Yulin Huang, Chong Shi, Zibo Zuo and Yiqun Chen Cite

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Numerical Study on Concrete Pumping Behavior via Local Flow …

This article reports a systematic DEM study of local behavior of fresh concrete during pumping (Figure1). We investigate the impact of several different factors on the local pumping performance. The main part of paper consists of an introduction of the and the

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Materials | Free Full-Text | Numerical Study on Concrete …

This article reports a systematic DEM study of local behavior of fresh concrete during pumping (). We investigate the impact of several different factors on the local pumping performance. The main part of paper consists of an introduction of the fundamentals of DEM, the details of modeling and the numerical simulation of representative cases.

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Numerical modeling of the tension stiffening in …

21/6/2020 · This study presents a numerical investigation on the fracture mechanism of tension stiffening phenomenon in reinforced concrete members. A novel approach using the discrete element method (DEM) is proposed, where three-dimensional randomly generated distinct polyhedral blocks are used, representing concrete and one-dimensional truss elements are utilized, representing steel …

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