The influence of the MRE forming medium and axial feeding on the forming quality of thin-walled Inconel 718 bellow manufactured by a bulging process: finite element simulation and experimentation

2020 ◽  
Vol 112 (1-2) ◽  
pp. 387-400
Author(s):  
Shenghan Hu ◽  
Ali Abd El-Aty ◽  
Cheng Cheng ◽  
Qiucheng Yang ◽  
Yao Qin ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Inconel 718 ◽  
Forming Quality ◽  
Axial Feeding ◽  
Element Simulation ◽  
Thin Walled

Finite element simulation of the axial collapse of metallic thin-walled tubes with octagonal cross-section

2003 ◽  
Vol 41 (10) ◽  
pp. 891-900 ◽  
Author(s):  
A.G Mamalis ◽  
D.E Manolakos ◽  
M.B Ioannidis ◽  
P.K Kostazos ◽  
C Dimitriou
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Cross Section ◽  
Element Simulation ◽  
Thin Walled

On Eccentric Tube Nosing

2008 ◽  
Vol 130 (1) ◽  
Author(s):  
Mahmoud Nemat-Alla
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Design Modification ◽  
Modes Of Failure ◽  
Element Simulation ◽  
Conical Die ◽  
Eccentric Tube ◽  
Different Diameters ◽  
Tube Nosing

Joining two tubes of different diameters has important concerns in many industries and engineering applications. An eccentric reducer is often used in such applications. Therefore, a simple and easy technique for manufacturing an eccentric reducer is of much importance. The simplest technique for producing the eccentric reducers is the tube nosing through eccentric conical dies. In this paper the finite element simulation is used to investigate the eccentric nosing of circular tubes through an eccentric conical die. Simulation is performed to investigate the plastic deformations of the deformed tube and all the possible modes of failure during the eccentric nosing process. Identification of unfavorable modes of failure in the tube nosing process lead to design modification guidelines, design of preform, and the die shape, for the eccentric nosing process. The results obtained confirmed that the modified design of the tube blank not only improves the quality of the nosed-tube product but also reduces nosing load and improves the limiting nosing ratio. Comparison with the experimental results shows that the nosing load and the modes of failure are successfully predicted by the finite element simulation. Also, a preform design for the tube blank that can produce an eccentric reducer with collar end that did not need a trimming process is introduced.

Finite element simulation of machining Inconel 718 alloy including microstructure changes

2014 ◽  
Vol 88 ◽  
pp. 110-121 ◽  
Author(s):  
F. Jafarian ◽  
M. Imaz Ciaran ◽  
D. Umbrello ◽  
P.J. Arrazola ◽  
L. Filice ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Inconel 718 ◽  
Inconel 718 Alloy ◽  
Microstructure Changes ◽  
Element Simulation

Research on the Connection Performance of Variable Pitch of Screw Threaded Casing Based on 3D Finite Element Simulation Model

2012 ◽  
Vol 215-216 ◽  
pp. 1105-1110 ◽  
Author(s):  
Xiong Guo ◽  
Lv Long Zou ◽  
Bing Lu ◽  
Shi Liang Zhang ◽  
Xing Ren Su ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Simulation ◽  
Element Model ◽  
Static Structure ◽  
3D Finite Element ◽  
Variable Pitch ◽  
Element Simulation ◽  
Ansys Workbench

The connection performance of the large taper, multi-thread, variable pitch of screw threaded casing is researched by 3D finite element simulation on ANSYS Workbench. The 3D finite element model is created precisely. The stress distribution on the teeth of three kind variable pitch of screw threaded structure is studied by using the static structure of the contact analysis module. Contrasting stress distribution of the variable pitch of screw with of the equal pitch of screw under the same working condition, it is validated that design principle for the variable pitch of screw connection is correct. The influence of changes in the amount of variable pitch of screw to the whole stress distribution on teeth is discussed. The results show that the force distribution on the teeth of the variable pitch of screw connection is more uniform than equal pitch of screw, and will improve the overall carrying capacity. This study has its practical value to improve the connective performance of the threaded casing and enhance the product quality of threaded casing.

Research on Wrinkling Behavior in Tube Hydroforming with Axial Feeding

2014 ◽  
Vol 622-623 ◽  
pp. 739-746
Author(s):  
Zhu Lin Hu ◽  
Lian Fa Yang ◽  
Yu Lin He
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Metal Forming ◽  
Shape Change ◽  
Tube Hydroforming ◽  
Loading Path ◽  
Axial Feeding ◽  
Loading Paths ◽  
Element Simulation

Tube hydroforming (THF) is one of metal forming technologies which has been widely used to manufacture complex hollow workpeices. In THF, a variety of failures may occur and one of them is wrinkling. But recent researches show that wrinkling may be used as a preforming process to improve the formability of tubes. In this paper, a new geometry-based wrinkling indicator is proposed to evaluate the wrinkling level in THF and the wrinkle evolution diagram (WED) based on the shape change of the wrinkles is presented to display the four-stage evolution of the useful wrinkles. The wrinkling levels in THF with axial feeding under various loading paths are predicted respectively via finite element simulation, the influence of loading paths on the wrinkling behavior is investigated, and the evolving stages of the useful wrinkles is revealed via the proposed WED. The results indicate that the proposed wrinkle indicator can distinctly evaluate the wrinkling level, the wrinkling level under pulsating loading path is higher than that under polygonal linear one and four-stage evolution of the useful wrinkles could be evidently demonstrated via the WED. Notation

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