Simulation of Fresh Concrete Flow Using Discrete Element Method (DEM)

2014 ◽  
pp. 65-98 ◽  
Author(s):  
Viktor Mechtcherine ◽  
Annika Gram ◽  
Knut Krenzer ◽  
Jörg-Henry Schwabe ◽  
Claudia Bellmann ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Fresh Concrete ◽  
Discrete Element ◽  
Concrete Flow ◽  
Element Method

Simulation of fresh concrete flow using Discrete Element Method (DEM): theory and applications

2013 ◽  
Vol 47 (4) ◽  
pp. 615-630 ◽  
Author(s):  
Viktor Mechtcherine ◽  
Annika Gram ◽  
Knut Krenzer ◽  
Jörg-Henry Schwabe ◽  
Sergiy Shyshko ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Fresh Concrete ◽  
Discrete Element ◽  
Concrete Flow ◽  
Element Method

scholarly journals Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1415 ◽  
Author(s):  
Yijian Zhan ◽  
Jian Gong ◽  
Yulin Huang ◽  
Chong Shi ◽  
Zibo Zuo ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Fresh Concrete ◽  
Numerical Study ◽  
Flow Simulation ◽  
Discrete Element ◽  
Local Flow ◽  
Pumping System ◽  
Concrete Pumping ◽  
Pipe Geometry ◽  
Element Method

The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. 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. Important factors related to the pipe geometry, aggregate geometry and pumping condition were considered during a series of parametric studies. Based on the simulation results, their impact on the local pumping performance is summarized. The present work demonstrates that the discrete element simulation offers a useful way to evaluate the influence of various parameters on the pumpability of fresh concrete.

Ellipse Particle Modeling for Fresh Concrete and Dynamic Simulation of Slump Test

2010 ◽  
Vol 168-170 ◽  
pp. 746-750
Author(s):  
Quan Yuan ◽  
Zhan Qi Guo
Keyword(s):  
Discrete Element Method ◽  
Numerical Method ◽  
Dynamic Simulation ◽  
Experimental Research ◽  
Fresh Concrete ◽  
Discrete Element ◽  
Qualitative Simulation ◽  
Slump Test ◽  
Particle Modeling ◽  
Element Method

The Discrete Element Method(DEM) has become a powerful numerical method for analysing discontinuous media. This paper provides a new ellipse particle modeling of fresh concrete by DEM. So far, research has been limited to experimental research and qualitative simulation. In this research, the parameters are defined from rheology. Then, a quantitative simulation is proposed. Slumping behaviors of fresh concrete are simulated.

Discrete Element Method Simulating Workability of Fresh Concrete

2010 ◽  
Author(s):  
Zhan-Qi Guo ◽  
Quan Yuan ◽  
P. Stroeven ◽  
A. L. A. Fraaij ◽  
Jane W. Z. Lu ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Fresh Concrete ◽  
Discrete Element ◽  
Element Method

Discrete element method to model cracking for two layer systems

TAPPI Journal ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 101-108
Author(s):  
Daniel Varney ◽  
Douglas Bousfield
Keyword(s):  
Discrete Element Method ◽  
Flexural Modulus ◽  
Single Layer ◽  
Discrete Element ◽  
Flexural Stress ◽  
Layer System ◽  
Three Point Bending ◽  
Moving Force ◽  
Coating Layers ◽  
Element Method

Cracking at the fold is a serious issue for many grades of coated paper and coated board. Some recent work has suggested methods to minimize this problem by using two or more coating layers of different properties. A discrete element method (DEM) has been used to model deformation events for single layer coating systems such as in-plain and out-of-plain tension, three-point bending, and a novel moving force picking simulation, but nothing has been reported related to multiple coating layers. In this paper, a DEM model has been expanded to predict the three-point bending response of a two-layer system. The main factors evaluated include the use of different binder systems in each layer and the ratio of the bottom and top layer weights. As in the past, the properties of the binder and the binder concentration are input parameters. The model can predict crack formation that is a function of these two sets of factors. In addition, the model can predict the flexural modulus, the maximum flexural stress, and the strain-at-failure. The predictions are qualitatively compared with experimental results reported in the literature.

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