scholarly journals Preliminary Study on Different Materials of Geogrid by using Finite Element Model

2021 ◽  
Vol 2129 (1) ◽  
pp. 012067
Author(s):  
Aida Atiqah Atil ◽  
Nik Normunira Mat Hassan ◽  
Fatimah Mohamed Yusop ◽  
Anika Zafiah M. Rus ◽  
Abdul Mutalib Leman ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Life Cycle Cost ◽  
Fem Simulation ◽  
Fem Analysis ◽  
Element Model ◽  
Specimen Size ◽  
Displacement Rate ◽  
Cost Ratio ◽  
Preliminary Study

Abstract In recent years, environmental concerns related to the overexploitation of natural resources and the need to manage large amounts of wastes arising from construction activities have intensified. This paper presents a preliminary study carried out to characterize the interaction impact with different material geogrids (a polyester (PET), high-density polyethylene (HDPE), and polyurethane (PU) geogrid through Finite Element Model (FEM) simulation. The effects of the geogrid specimen size, displacement rate by the pressure through the geogrids are evaluated. The results show that the measured peak pullout resistance of the geogrid increases with the specimen size imposed displacement rate The pressure ranged from 10 000 N/m2 and 50 000 N/m2. The FEM analysis result is important due to quantify the benefit-cost ratio of geosynthetics application in pavements needed for a detailed Life-Cycle Cost Analysis (LCCA).

FEM Simulation of Anisotropic Parameters Influencing the Earing in Sheet Metal Deep Drawing Process

2011 ◽  
Vol 88-89 ◽  
pp. 638-641 ◽  
Author(s):  
Lei Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Sheet Metal ◽  
Deep Drawing ◽  
Fem Simulation ◽  
Element Model ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Material Characteristics

Earing is often undesirable in the production of deep drawn containers because it results in a nonuniform cup height. A finite element model for earring analysis is developed considering only the flange area of the sheet. It was found that the draw-in depth of the flange increases with the increase of the r value, and it remains invariable when r value is larger than 2. With the increase of the r value, the max thickness decreases and the min thickness increases. If △r>0, four earings are formed. If △r =0, the material characteristics in all the planar directions are same. The flange uniformly flows into the die cavity, no earing is formed. If △r<0, four earings are formed. The earing distribution is dominated by r0, r45 and r90. Both r and △r have much effect on the earing distribution.

The Influence of Residual Stress on the Machining Deformation

2012 ◽  
Vol 426 ◽  
pp. 172-176
Author(s):  
Hun Guo
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Finite Element Model ◽  
Simulation Model ◽  
Elasticity Theory ◽  
Initial Stress ◽  
Fem Simulation ◽  
Element Model ◽  
Fem Model ◽  
Simulation Results

The key problems in 2D FEM simulation such as the establishment of finite element model, the initial stress loading, the distortion appraisal are solved and 2D FEM simulation model is built to analyze the milling distortion caused by the residual stress. The FEM model is verified by the elasticity theory. Some machining cases are simulated by using of the FEM model. The machining distortion caused by residual stress are analyzed and summarized using the simulation results.

Finite Element Model Updating in the Vibration of Bladed Disk: Shaft Assemblies

2004 ◽  
Author(s):  
B. Irwanto ◽  
Rolf Schmidt ◽  
D. Pawandenat ◽  
H.-J. Hardtke
Keyword(s):  
Finite Element ◽  
Numerical Modeling ◽  
Finite Element Model ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Insufficient Information ◽  
Bladed Disk ◽  
Preliminary Study ◽  
Made In

This work provides a preliminary study of finite element model updating in bladed disk-shaft assemblies. The use of finite element method has been widely found and accepted in engineering analysis. However, the limitations of numerical modeling, in this case finite element model, cannot be avoided. The approach of numerical modeling is limited by the assumptions made in the development such as insufficient information on material, geometry etc. Hence, model updating is required to improve the modeling results. Since model updating involves experimental results, the measurement limitations also affect the accuracy of updated model. In this paper, a model updating technique is applied to study mistuned bladed disks. Important parameters for model updating are discussed and the updating process is carried out on an industrial radial blisk. By using the model updating technique, the model of mistuned bladed disk can be enhanced.

Analysis of the Milling Distortion Due to Residual Stress Based on FEM

2010 ◽  
Vol 136 ◽  
pp. 39-42
Author(s):  
Yuan Wei Liu
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Finite Element Model ◽  
Simulation Model ◽  
Elasticity Theory ◽  
Initial Stress ◽  
Fem Simulation ◽  
Element Model ◽  
Fem Model ◽  
Simulation Results

The key problems in 2D FEM simulation such as the establishment of finite element model, the initial stress loading, the distortion appraisal are solved and 2D FEM simulation model is built to analyze the milling distortion caused by the residual stress. The FEM model is verified by the elasticity theory. Some machining cases are simulated by using of the FEM model. The machining distortion caused by residual stress are analyzed and summarized using the simulation results.

Optimization Based on Design of Experiments (DOE) Using Finite Element Model (FEM) Analysis Applied to Retrofitting the Church of Baldornon, Spain

2012 ◽  
Vol 6 (4) ◽  
pp. 436-451 ◽  
Author(s):  
Juan José Del Coz Diaz ◽  
Paulino José García Nieto ◽  
Felipe Pedro Álvarez Rabanal ◽  
Alfonso Gerónimo Lozano Martínez-Luengas
Keyword(s):  
Finite Element ◽  
Design Of Experiments ◽  
Finite Element Model ◽  
Fem Analysis ◽  
Element Model ◽  
The Church

FEM Simulation and Experimental Study on Miling Force for Aero-Aluminum Alloy Based on Trochoid-Motion

2011 ◽  
Vol 317-319 ◽  
pp. 222-226
Author(s):  
Jin Yu ◽  
Yu Xiang Shi ◽  
Gui Wu Yang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Model ◽  
Fem Simulation ◽  
Element Model ◽  
Milling Force ◽  
Parallel Motion ◽  
Aluminum Alloy 7075 ◽  
The Finite Element Model ◽  
Simulation Time

By analyzing the relative position between tool and workpiece in assemble model of finite simulation, and loading the tool with parallel motion and rotation, a finite element model based on trochoid motion is built. In order to reduce the simulation time and errors advanced meshing method was used to optimize the finite element model. This paper considers performance parameter of the workpiece, and researches a simulation of milling force on the Aero-aluminum Alloy 7075-T7451 by using ABAQUS. The milling force finite element model was verified to be feasible, and the result is reliable.

scholarly journals FEM Simulation of Non-Progressive Growth from Asymmetric Loading and Vicious Cycle Theory: Scoliosis Study Proof of Concept

2010 ◽  
Vol 4 (1) ◽  
pp. 162-169 ◽  
Author(s):  
Jonathan Fok ◽  
Samer Adeeb ◽  
Jason Carey
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Current Knowledge ◽  
Fem Simulation ◽  
Element Model ◽  
Growth Patterns ◽  
Vicious Cycle ◽  
Growth Modulation ◽  
Modulation Equation ◽  
Asymmetric Loading

Scoliosis affects about 1-3% of the adolescent population, with 80% of cases being idiopathic. There is currently a lack of understanding regarding the biomechanics of scoliosis, current treatment methods can be further improved with a greater understanding of scoliosis growth patterns. The objective of this study is to develop a finite element model that can respond to loads in a similar fashion as current spine biomechanics models and apply it to scoliosis growth. Using CT images of a non-scoliotic individual, a finite element model of the L3-L4 vertebra was created. By applying asymmetric loading in accordance to the ‘vicious cycle’ theory and through the use of a growth modulation equation it is possible to determine the amount of growth each region of the vertebra will undergo; therefore predict scoliosis growth over a period of time. This study seeks to demonstrate how improved anatomy can expand researchers current knowledge of scoliosis.

FEM Analysis of a Cantilever Sandwich Beam with MR Fluid Based on ANSYS

2013 ◽  
Vol 208 ◽  
pp. 63-69 ◽  
Author(s):  
Mateusz Romaszko ◽  
Marcin Węgrzynowski
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Fluid Layer ◽  
Sandwich Beam ◽  
Fem Analysis ◽  
Element Model ◽  
Free Vibrations ◽  
Mr Fluid ◽  
Computation Data ◽  
Good Agreement

The study covers the modeling three-layered beam incorporating a magnetorheological (MR) fluid. The beam finite element model was created using the ANSYS software. The beam comprises two outer layers made of aluminium and MR fluid layer in between, sealed with silicone rubber. Interactions of the magnetic field are taken into account by varying the parameters of the finite elements. Data required for identification were collected from results of measurement of the beams free vibrations. The identification procedure assumes the good agreement between the frequencies of the beams free vibrations and dimensionless damping coefficients obtained from research and computation data. The validity of proposed beams finite element model was also investigated. Finally some numerical results were presented.

scholarly journals Optimization of the Auxiliary-Beam System in Railway Bridge Vibration Mitigation Using FEM Simulation and Genetic Algorithms

Symmetry ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1089
Author(s):  
Jacobo Baldonedo ◽  
José A. López-Campos ◽  
Marcos López ◽  
Enrique Casarejos ◽  
José R. Fernández
Keyword(s):  
Genetic Algorithm ◽  
Finite Element ◽  
Finite Element Model ◽  
Structural Parameters ◽  
Fem Simulation ◽  
Element Model ◽  
Design Parameters ◽  
Vibration Mitigation ◽  
Resonance Effects ◽  
Beam System

In this paper, we present the optimization of a vibration mitigation system for railway bridges. These structures are subjected to significant moving loads, whose dynamic characteristics may produce resonance effects, compromising the integrity of the bridge and the security of the passengers if the speed or the load of the train is not controlled. The study focuses on the Auxiliary Beam system. It consists of a beam located under the bridge and connected to the slab by viscous dampers. The symmetry of the problem allowed for the use of a 2D Finite Element model of the system. This model was used together with a genetic algorithm in order to evaluate the behaviour of different candidates and to optimize the design parameters: the inertia of the beam and the damper coefficient. The goal of the optimization process is to minimize the acceleration of the bridge while adding the lightest mitigation system possible. The combination of a Finite Element Model and Genetic Algorithm helps to address the complex problem and to find an optimized set of structural parameters. The system finally shows good behaviour for optimal parameters.

FEM Analysis and Optimization of Large Load Suspended Platform

2012 ◽  
Vol 569 ◽  
pp. 415-419
Author(s):  
Xi Jian Zheng ◽  
Yong Shang Han ◽  
Zheng Yi Xie
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Fem Analysis ◽  
Element Model ◽  
Test Results ◽  
The Finite Element Method ◽  
Element Analysis ◽  
The Finite Element Model

Based on the Finite Element Method, the suspended platform of temporarily installed suspended access equipment was simplified and the special connection positions were dealt with rigidization and coupling, thus the finite element model of suspended platform was established. Analyzing major structures of finite element model in different section dimensions, the reasonable scheme could be ascertained and the section dimensions of major structures in different materials could be obtained. Combining with the test results, the rationality of finite element analysis could be proved. The study could provide reference for the similar products on design and development.

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