IMPLEMENTATION OF THE EULERIAN AND THE ARBITRARY LAGRANGIAN–EULERIAN DESCRIPTIONS IN FINITE ELEMENT SIMULATION OF EXTRUSION PROCESSES

2013 ◽  
Vol 02 (03n04) ◽  
pp. 1350013
Author(s):  
ALIASGHAR ASGARI ◽  
ALI NAYEBI
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Arbitrary Lagrangian Eulerian ◽  
Governing Equations ◽  
Split Method ◽  
Element Simulation ◽  
Ale Methods ◽  
Eulerian Descriptions ◽  
Operator Split ◽  
Good Agreement

In this paper, backward and forward–backward-radial extrusion processes of aluminum have been simulated using finite element method. Due to the extreme deformation of the workpiece and the restrictions of the Lagrangian approach to simulate such problems, the arbitrary Lagrangian–Eulerian (ALE) and the Eulerian descriptions have been implemented in backward and forward–backward-radial extrusion processes, respectively. Operator-split method is used to solve the coupled governing equations of the Eulerian and the ALE formulations. To validate the finite element simulations, the results have been compared with experimental data in terms of extrusion load and geometry of final products. A good agreement has been seen between the results demonstrating the capability of the Eulerian and the ALE methods on finite element simulation of extrusion processes.

3-D Finite Element Simulation of Pulsating T-Shape Hydroforming of Tubes

2007 ◽  
Vol 340-341 ◽  
pp. 353-358 ◽  
Author(s):  
M. Loh-Mousavi ◽  
Kenichiro Mori ◽  
K. Hayashi ◽  
Seijiro Maki ◽  
M. Bakhshi
Keyword(s):  
Finite Element ◽  
Internal Pressure ◽  
Finite Element Simulation ◽  
Wall Thickness ◽  
Filling Ratio ◽  
Shape Accuracy ◽  
Element Simulation ◽  
Hydroforming Process ◽  
Good Agreement

The effect of oscillation of internal pressure on the formability and shape accuracy of the products in a pulsating hydroforming process of T-shaped parts was examined by finite element simulation. The local thinning was prevented by oscillating the internal pressure. The filling ratio of the die cavity and the symmetrical degree of the filling was increased by the oscillation of pressure. The calculated deforming shape and the wall thickness are in good agreement with the experimental ones. It was found that pulsating hydroforming is useful in improving the formability and shape accuracy in the T-shape hydroforming operation.

Rate-Dependent Material Properties of Adhesively Bonded Joints - Must Have or Nice to Have?

2020 ◽  
Vol 858 ◽  
pp. 14-19
Author(s):  
Michael May
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Crash Simulation ◽  
Adhesively Bonded Joints ◽  
Rate Dependent ◽  
Element Simulation ◽  
Good Agreement

In the context of automotive crash simulation, rate-dependent properties are sought for all materials undergoing deformation. Measuring rate-dependent properties of adhesively bonded joints is a challenging and associated with additional cost. This article assesses the need for having rate-dependent properties of adhesively bonded joints for the example of a typical automotive structure, an adhesively bonded metallic T-joint. Using Finite Element simulation it could be shown that good agreement between experiment and simulation was only achieved if rate-dependent properties were considered for the adhesive.

ABAQUS Based on Machining Simulation during Metal Milling

2014 ◽  
Vol 983 ◽  
pp. 226-230
Author(s):  
Zhu Dan ◽  
Zheng Yan
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Machining Simulation ◽  
Milling Force ◽  
Element Analysis ◽  
Fem Model ◽  
Steel Material ◽  
Element Simulation ◽  
Distribution Of Stress ◽  
Good Agreement

Machining of metals make use of thermal mechanical FEM model. Analysis of nonlinear elastoplastic finite element simulation of milling of 45 # steel material use software of ABAQUS that is finite element simulation technology. ABAQUS software could be carried out on prediction of the milling force. Through finite element analysis, distribution of stress field of workpiece and tool is obtained under the influence of thermal mechanical. The prediction accuracy of the model was validated experimentally and the obtained numerical and experimental results were found in good agreement.

Finite Element Simulation of Bending Stress on Involute Spur Gear Tooth Profiles

2017 ◽  
Vol 30 ◽  
pp. 1-10
Author(s):  
Kolawole Adesola Oladejo ◽  
Dare Aderibigbe Adetan ◽  
Ayobami Samuel Ajayi ◽  
Oluwasanmi Oluwagbenga Aderinola
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Gear Tooth ◽  
Spur Gear ◽  
Bending Stress ◽  
Relative Deviation ◽  
Element Simulation ◽  
Maximum Relative Deviation ◽  
Bending Stresses ◽  
Good Agreement

This study investigated bending stress distribution on involute spur gear tooth profiles with pressure angle of 20 ̊ but different modules 2.5, 4.0 and 6.0 mm, using a finite-element-based simulation package - AutoFEA JL Analyzer. The drafting of the geometry for the three gear tooth profiles were implemented on the platform of VB-AutoCAD customized environment, before importing to the package. These were separately subjected to analysis for bending stresses for a point at the tooth fillet region with appropriate settings of material property, load and boundary conditions. With the same settings, the bending stresses were computed analytically using American Gear Manufacturers Association (AGMA) established equation. The results of the two approaches were in good agreement, with maximum relative deviation of 4.38%. This informed the confidence in the implementation of the package to investigate the variation of bending stress within the gear tooth profile. The simulation revealed decrease in the bending stresses at the investigated regions with increase in the module of the involute spur-gear. The study confirms that Finite element simulation of stresses on gear tooth can be obtained accurately and quickly with the AutoFEA JL Analyzer.

scholarly journals Finite Element Modelling and Simulating Effects of Hairiness Performance on Hairiness Entanglement During Fabric Pilling

2021 ◽  
Author(s):  
Qi Xiao ◽  
Rui Wang ◽  
Hongyu Sun ◽  
Jingru Wang
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Strain Energy ◽  
Dissipation Energy ◽  
Motion Equations ◽  
Dynamic Motion ◽  
Element Simulation ◽  
Frictional Dissipation ◽  
Simulation Results ◽  
Good Agreement

Abstract For analyzing behaviors of hairiness entanglement during fabric pilling, nonlinear dynamic motion equations are deduced based on the elastic thin rod element, combined with the moving characteristics of hairiness, which follow the principles of mechanical equilibrium and energy conservation. The finite element simulation model of the effects of hairiness performance on behaviors of hairiness entanglement was established by ABAQUS. The analysis solution values of nonlinear dynamics were compared with the finite element simulation results. The results showed that hairiness elastic modulus, hairiness friction coefficient and hairiness diameter have significant effects on frictional dissipation energy, strain energy and kinetic energy produced by hairiness entanglement during pilling. Compared the finite element simulation results with analysis solution values, they are in good agreement. The fitness is greater than 0.96, which verifies the validity of finite element method.

DEFORM-3D Based on Machining Simulation during Metal Milling

2013 ◽  
Vol 579-580 ◽  
pp. 197-201 ◽  
Author(s):  
Zhan Li Wang ◽  
Yan Juan Hu ◽  
Dan Zhu
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Element Analysis ◽  
Fem Model ◽  
Steel Material ◽  
Element Simulation ◽  
3D Software ◽  
Distribution Of Stress ◽  
Deform 3D ◽  
Good Agreement

Machining of metals make use of thermal mechanical FEM model. Analysis of nonlinear elastoplastic finite element simulation of milling of 45 # steel material use software of DEFORM-3D that is finite element simulation technology. DEFORM-3D software could be carried out on prediction of the milling force. Through finite element analysis, distribution of stress field, strain field and temperature field of workpiece and tool is obtained under the influence of thermal mechanical. The prediction accuracy of the model was validated experimentally and the obtained numerical and experimental results were found in good agreement.

Validation of Residual Stresses of Finite Element Simulation of Multi Pass Butt-Welded Plates Using the Contour Method

2011 ◽  
Vol 681 ◽  
pp. 67-72
Author(s):  
Eduardo Rodríguez ◽  
Cristina Martín ◽  
José Luis Cortizo ◽  
Julio Guirao ◽  
José Manuel Sierra
Keyword(s):  
Finite Element ◽  
Residual Stresses ◽  
Finite Element Simulation ◽  
Fe Simulation ◽  
Coordinate Measuring Machine ◽  
Contour Method ◽  
Element Simulation ◽  
Measuring Machine ◽  
Number Of Passes ◽  
Good Agreement

In this paper a comparison between the results obtained using multi pass welding finite element (FE) simulation and the contour method was made to evaluate the accuracy in residual stresses simulated for plates with different thicknesses. The contour method has been used to measure the residual stresses in multi pass butt-welded plates. Two 316 austenitic stainless steel multi pass Metal Inert Gas (MIG) butt-welded plates of 10 mm thickness were cut using wire Electric Discharge Machining (EDM). The measurements of the cross-section were made with a coordinate measuring machine (CMM) and the points obtained were used to calculate the residual stresses by mean of static analysis of finite elements. A multi pass welding FE simulation of the two plates was made to obtain the residual stresses after time cooling. The simulated results are generally in good agreement with the experimental measurements. Other plates of 25 mm thickness and the same material were multi pass MIG butt-welded to evaluate the behavior with different thicknesses. In this case the number of passes was 11. The same method was applied to obtain the residual stresses. A comparison between different thicknesses was made. The residual stresses validation will allow the finite element simulation to be used for the later simulation of residual stresses relaxation.

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