Hybrid Finite-Discrete Element Simulation of Crack Propagation under Mixed Mode Loading Condition

2006 ◽  
Vol 306-308 ◽  
pp. 495-500
Author(s):  
Ahmad Kamal Ariffin ◽  
Syifaul Huzni ◽  
Mohd Jailani Mohd Nor ◽  
Nik Abdullah Nik Mohamed
Keyword(s):  
Crack Propagation ◽  
Mixed Mode ◽  
Loading Condition ◽  
Discrete Element ◽  
Experimental Result ◽  
Mixed Mode Loading ◽  
Discrete Element Simulation ◽  
Element Simulation ◽  
Proposed Model ◽  
Element Method

This paper describes the numerical modeling based on combination of finite element method (FEM) and discrete element method (DEM) has been employed to simulate crack propagation under mixed mode loading. The work demonstrates the ability of combination finitediscrete element method to simulate the crack propagation that is usually performed through, what is termed, transition from continua to discontinua process. Crack propagation trajectory under selected loading angles (30o & 60o) are presented. The result obtained using the proposed model compare well with experimental result.

Finite Element Simulation of Crack Propagation Under Mixed Mode Loading Condition Using Element Removing Method

2007 ◽  
Vol 345-346 ◽  
pp. 501-504
Author(s):  
H.S. Kim ◽  
K.S. Kim ◽  
Young Seog Lee
Keyword(s):  
Finite Element ◽  
Crack Propagation ◽  
Finite Element Simulation ◽  
Crack Growth ◽  
Failure Criterion ◽  
Mixed Mode ◽  
Loading Condition ◽  
Crack Tip ◽  
Mixed Mode Loading ◽  
Element Simulation

In this study, we introduce an approach which simulates crack propagation under mixedmode loading condition. In comparison with the conventional element removing method which eliminates any element that satisfies a prescribed failure criterion near the crack tip, the present approach selects a set of elements ahead of the crack tip on the crack growth direction and removes them one by one when the element meets a prescribed failure criterion. Compact tension shear (CTS) specimens of type 304 stainless steel were used for failure testing. Finite element simulation has been carried out to simulate crack profiles and compared with observed ones. Results showed the proposed element removing algorithm is useful for crack growth simulation under mixed mode loading condition. The experimentally measured crack growth profile is in an agreement with the predicted ones.

Computational fluid dynamics and discrete element simulation of the formation of inorganic syngas contaminants during lignocellulosic biomass gasification

2020 ◽  
Vol 4 (8) ◽  
pp. 4219-4231
Author(s):  
Oluwafemi Oyedeji ◽  
Nourredine Abdoulmoumine
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Discrete Element Method ◽  
Lignocellulosic Biomass ◽  
Biomass Gasification ◽  
Discrete Element ◽  
Discrete Element Simulation ◽  
Element Simulation ◽  
Dem Model ◽  
Element Method

We report in this study the development of a computational fluid dynamics and discrete element method (CFD-DEM) model to predict the yield of deleterious nitrogen and sulfur contaminants (NH3, HCN, H2S, COS, and SO2) during biomass gasification.

scholarly journals Parameter Calibration of Pig Manure with Discrete Element Method Based on JKR Contact Model

2020 ◽  
Vol 2 (3) ◽  
pp. 367-377
Author(s):  
Wenjie Yu ◽  
Renxin Liu ◽  
Weiping Yang
Keyword(s):  
Discrete Element Method ◽  
Polynomial Regression ◽  
Discrete Element ◽  
Regression Equation ◽  
Pig Manure ◽  
Discrete Element Simulation ◽  
Processing Machinery ◽  
Element Simulation ◽  
Polynomial Regression Equation ◽  
Element Method

The conversion of pig manure into organic fertilizer has become a research hotspot in agricultural engineering, and many types of pig manure processing machinery have been derived. The discrete element method (DEM) can be used in the research of pig manure processing machinery to study the interaction between pig manure and machinery, which makes the research more direct and accurate. In order to introduce the discrete element method into the research of pig manure processing machinery, a reliable parameter basis for discrete element simulation is necessary, taking the angle of repose (AoR) as the reference and based on the hertz-mindlin with JKR contact model and Plackett–Burman experiment design. Three parameters with significant influence on the AoR are screened out from nine parameters related to pig manure. By conducting Box–Behnken experiment design, the quadratic polynomial regression equation between the AoR and three significant parameters is established. According to the parameters predicted by the quadratic polynomial regression equation, the discrete element simulation of AoR is conducted. The simulation result of AoR (38.54°) is close to the experimental result (38.65°) with a relative error of 0.28%, indicating that the regression equation can predict the relevant parameters of pig manure according to the AoR.

Discrete element simulation of the behavior of bulk granular material during truck braking

2006 ◽  
Vol 23 (1) ◽  
pp. 4-15 ◽  
Author(s):  
Shu‐chun Zuo ◽  
Yong Xu ◽  
Quan‐wen Yang ◽  
Y.T. Feng
Keyword(s):  
Granular Material ◽  
Discrete Element ◽  
Discrete Element Simulation ◽  
Element Simulation
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