Investigation of multi-stage cold forward extrusion process using coupled thermo-mechanical finite element analysis

2018 ◽  
Author(s):  
Mehmet Okan Görtan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Extrusion Process ◽  
Element Analysis ◽  
Forward Extrusion ◽  
Multi Stage

scholarly journals Finite Element Analysis of Copper Deformed By Conventional Forward Extrusion

2014 ◽  
Vol 10 (6) ◽  
pp. 01-05 ◽  
Author(s):  
Morteza Soltantabar ◽  
◽  
Dr. A. Krishnaiah ◽  
Ali Tari
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Forward Extrusion

Design Optimization of the Aerial Lift Boom through the Finite-Element Analysis (FEA)

2011 ◽  
Vol 295-297 ◽  
pp. 1564-1567
Author(s):  
Yong Hong ◽  
Seokjun Yu ◽  
Jaejung Lee ◽  
Hyeonsu Ha ◽  
Dong Pyo Hong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Optimization ◽  
Experimental Method ◽  
General Purpose ◽  
Element Analysis ◽  
Actual Experiment ◽  
Multi Stage ◽  
The Finite Element Analysis ◽  
Aerial Platform

The multi-stage boom consisting of several booms is used in order to develop the aerial platform truck that can be used in a working radius that is higher and safe. Because the length increases compared with the width or the height of the structure, the intensity and rigidity are lowered along with the safety. Accordingly, a countermeasure is needed. Therefore, in this research, when designing of the high ground work difference Boom System, the safety the stress of the considered boom the analyze method and experimental method tries to be evaluated through the comparison. The finite-element analysis(FEA) compared the Strain value which is obtained through the resolution value and actual experiment by using the Ansys,that is the general purpose program, and proved this safety.

A study on finite element analysis for simplification of curvature extrusion method

2018 ◽  
Vol 32 (19) ◽  
pp. 1840043
Author(s):  
J. O. Yu ◽  
Y. H. Kim ◽  
Nagamachi Takuo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Friction Coefficient ◽  
Extrusion Process ◽  
Experimental Results ◽  
Element Analysis ◽  
Extrusion Method ◽  
Good Agreement

To eliminate the complexity of curvature extrusion process, a new extrusion method was proposed. In this study, a finite element analysis for curvature extrusion was studied to commercialize this extrusion method that creates curvature in a tilting method. When simulating an extrusion process, it is important to fix the appropriate friction coefficient and fillet value to avoid peel-out problems such that the finite element disappears. Therefore, the actual extrusion results and the simulated results were compared to find conditions that the element would not disappear. There was a good agreement between the simulation and experimental results when the coefficient friction was 0.4 and the fillet was 0.4 mm.

Micro-Drawing of Circular Cups with Thin Stainless Steel Sheets

2018 ◽  
Vol 920 ◽  
pp. 114-119
Author(s):  
Hong Syuan Su ◽  
Fuh Kuo Chen ◽  
Kun Min Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Die Design ◽  
Stress Strain ◽  
Element Analysis ◽  
Steel Sheets ◽  
Grain Sizes ◽  
Multi Stage ◽  
The Finite Element Analysis ◽  
Tooling Design

With the ongoing development of product process, there is a growing demand on micro products. Though the macro-drawing process has been well-developed, the design concepts may not be directly applicable to the micro-drawing due to the size effect occurred in the micro-forming processes. In the present study, experiments were conducted first to establish the stress-strain curves, r-values and work hardening exponents of 304 stainless steel sheets with different grain sizes. The experiment results reveal that the stress-strain and r-value become smaller and the work hardening exponent increases for larger grain sizes. The difference between stress-strain curves in various directions of 0°, 45° and 90°, respectively, is significant when the grain size increases. The stamping of a vibration motor shell of cell phone, which bears a circular cylindrical shape, was also examined in the present study. The finite element simulations were performed to evaluate the formability of the multi-stage drawing process with initial die design. The forming characteristics were identified and an optimum die design was then developed with the use of the finite element analysis. The stamping process with multi-stage tooling design based on the finite element analysis was implemented and the actual stamping experiments were conducted to verify finite element analysis. The experimental results confirm the validity of the modified tooling design and the efficiency of the finite element analysis.

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