A Finite Element Analysis for an Iron Ore Pellet Compression Test

2017 ◽  
Vol 899 ◽  
pp. 474-477
Author(s):  
Maria Carolina dos Santos Freitas ◽  
Flavia de Paula Vitoretti ◽  
Jorge Franklin Mansur Rodrigues Filho ◽  
Viviane Lima Silva ◽  
Jose Adilson de Castro ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Mechanical Behavior ◽  
Uniaxial Compression ◽  
Compression Test ◽  
Iron Ore ◽  
Element Model ◽  
Uniaxial Compression Test ◽  
Iron Ore Pellets ◽  
Ore Pellets

The increasing global demand for iron ore pellets has made the pelletizing companies to step up their investments. The mechanical strength of the pellets, as well as its wear resistance are important factors to characterize the mechanical behavior. These properties are influenced by the type and nature of the ore or concentrate, the additives and the subsequent heat treatment used. This paper develops a numerical finite element model in order to characterize the mechanical behavior of iron ore pellets. The main objective of this study was to establish a valid finite element model that is able to simulate the mechanical behavior of iron ore pellets. The uniaxial compression test was made to evaluate the mechanical properties of the pellets. Furthermore, modeling and simulations are done using the software ABAQUS CAE® for uniaxial compression using the material properties obtained by the test. Lastly, in order to validate the model, the experimental data is crossed with the simulation results to discuss its correlation and particularities.

Analysis of the Iron Ore Pellet Mechanical Behavior under Biaxial Compression

2017 ◽  
Vol 899 ◽  
pp. 448-451
Author(s):  
Jorge Franklin Mansur Rodrigues Filho ◽  
Maria Carolina dos Santos Freitas ◽  
Flavia de Paula Vitoretti ◽  
Jose Adilson de Castro ◽  
Gláucio Soares Fonseca
Keyword(s):  
Mechanical Behavior ◽  
Iron Ore ◽  
Element Model ◽  
Biaxial Stress ◽  
Biaxial Compression ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Iron Ore Pellet ◽  
Accuracy Increase ◽  
Numerical Finite Element

The increasing global demand for iron ore pellets has made the pelletizing companies to step up their investments. The mechanical strength of the pellets, as well as its wear resistance are important factors to characterize the mechanical behavior. These properties are influenced by the type and nature of the ore or concentrate, the additives and the subsequent heat treatment used. This paper develops a numerical finite element model in order to characterize the mechanical behavior of iron ore pellets. The biaxial compressive stress was analyzed in this study. The results show that the pellet subjected to biaxial stress supports higher levels of stress and strain when compared to uniaxial efforts. Accuracy increase of the simulation results can be obtained with the implementation of a failure criterion for brittle materials in the numerical model. Finally, could be seen that the pellet had higher levels of deformation under biaxial symmetric strain, when compared with the uniaxial compression results.

4H1 Finite element analysis of spine cage in the uniaxial compression test

2013 ◽  
Vol 2013 (0) ◽  
pp. 261-262
Author(s):  
Takako OSAWA ◽  
Shigeaki MORIYAMA ◽  
Tomoyo YUTANI ◽  
Naoyuki NISHIMURA ◽  
Yuki USUI ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Uniaxial Compression ◽  
Compression Test ◽  
Uniaxial Compression Test ◽  
Element Analysis

Mechanical behavior and damage mechanism of loaded coal and rock

2017 ◽  
Vol 14 (3) ◽  
pp. 200-207 ◽  
Author(s):  
Feng Luo ◽  
Guodong Li ◽  
Hao Zhang
Keyword(s):  
Mechanical Behavior ◽  
Uniaxial Compression ◽  
Axial Compression ◽  
Compression Test ◽  
Growth Stage ◽  
Shear Failure ◽  
Failure Process ◽  
Damage Mechanism ◽  
Uniaxial Compression Test ◽  
Content Type

Purpose The purpose of this paper is to obtain the mechanical behavior and damage mechanism of the coal and rock near the stope under the stress state and stress paths of the surrounding rock with the dynamic mining. Design/methodology/approach Through the three-axial compression test and the uniaxial compression test by meso experiment device, the mechanical behavior and fracture evolution process of coal and rock were studied, and the acoustic emission (AE) characteristics under uniaxial compression of the coal and rock were contrasted. Findings Under the three-axial compression, the strength of coal and rock enhance significantly by confining pressure. The volume of outburst coal shows obvious stages: compression is followed by expansion. The coal first appear to undergo compaction under vertical stress due to volume decrease, but with the development of micro- and macro-cracks, the specimens appeared to expand; under the uniaxial compression, through the comparison of stress–strain relationship and the crack propagation process, stress drop and fracture of coal have obvious correlation. The destruction of coal was gradual due to the slow and steady accumulation of internal damage. Due to the influence of the end effect, the specimens show the “conjugate double shear failure”. The failure process of the coal and rock and the characteristics of the AEs have a corresponding relationship: the failure causes a large number of AE events. Before the events peak, there was an initial stage, calm growth stage and explosive growth stage. There were some differences between the rock and coal in the characteristics of the AE. Originality/value These research studies are conducted to provide guidance on the basis of mine disaster prevention and control.

Finite Element Analysis of Head-Form Impacting Laminated Glass for Automotive Windscreens

2016 ◽  
Vol 680 ◽  
pp. 72-75
Author(s):  
Yan Min ◽  
Zeng Chen Cao ◽  
Shuang Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Mechanical Behavior ◽  
Element Model ◽  
Laminated Glass ◽  
Element Analysis ◽  
Head Form ◽  
Set Up ◽  
The Finite Element Model

Based on GB/T 5137.1-2002 experiment specification, the finite element model of head-form impacting laminated glass for automotive windscreens is set up in this paper. According to Finite Element Analysis results of laminated glass with different structure and further analyzing impact property and mechanism of laminated glass , the influence rule of the structure of the laminated glass on the mechanical behavior is discussed. (H)

scholarly journals Numerical investigation of the mechanical properties of the additive manufactured bone scaffolds fabricated by FDM: the effect of layer penetration and post-heating

2017 ◽  
Author(s):  
Saman Naghieh ◽  
Mohammad Reza Karamooz-Ravari ◽  
Mohsen Badrossamay ◽  
Ehsan Foroozmehr
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Elastic Modulus ◽  
Numerical Methods ◽  
Finite Element Model ◽  
Compression Test ◽  
Element Model ◽  
Element Analysis ◽  
Bone Scaffolds

In recent years, thanks to additive manufacturing technology, researchers have gone towards the optimization of bone scaffolds for the bone reconstruction. Bone scaffolds should have appropriate biological as well as mechanical properties in order to play a decisive role in bone healing. Since the fabrication of scaffolds is time consuming and expensive, numerical methods are often utilized to simulate their mechanical properties in order to find a nearly optimum one. Finite element analysis is one of the most common numerical methods that is used in this regard. In this paper, a parametric finite element model is developed to assess the effects of layers penetration׳s effect on inter-layer adhesion, which is reflected on the mechanical properties of bone scaffolds. To be able to validate this model, some compression test specimens as well as bone scaffolds are fabricated with biocompatible and biodegradable poly lactic acid using fused deposition modeling. All these specimens are tested in compression and their elastic modulus is obtained. Using the material parameters of the compression test specimens, the finite element analysis of the bone scaffold is performed. The obtained elastic modulus is compared with experiment indicating a good agreement. Accordingly, the proposed finite element model is able to predict the mechanical behavior of fabricated bone scaffolds accurately. In addition, the effect of post-heating of bone scaffolds on their elastic modulus is investigated. The results demonstrate that the numerically predicted elastic modulus of scaffold is closer to experimental outcomes in comparison with as-built samples.

Effects of Local Deck Removal on the Mechanical Behavior of Wide Box Composite Girder Bridge

2011 ◽  
Vol 255-260 ◽  
pp. 1192-1197
Author(s):  
Qing Tian Su ◽  
Dong Fang Wang ◽  
Guo Tao Yang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Mechanical Behavior ◽  
Element Model ◽  
Structure Characteristics ◽  
Removal Method ◽  
Composite Girder ◽  
Vehicle Load ◽  
Girder Bridge ◽  
Set Up

The concrete decks in wide box composite girder bridge carrying vehicle load directly are easy to failure. So the decks in approach bridge of Jiubao Bridge are designed to renewable component. Several deck removal plans were put forward based on the structure characteristics of the Jiubao bridge. Spatial finite element model of the bridge was set up and the responses of approach bridge under different removal plan were analyzed. The analysis results show that methods proposed in this paper about deck removal in local position or in whole span are feasible; however different whole span removal method affect the mechanical behavior of the approach bridge heavily.

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