Finite Element Modeling of a Torque Rod Forging Process

2014 ◽  
pp. 77-82
Author(s):  
M. S. Keskin ◽  
S. Bingol ◽  
H. B. Elem ◽  
A. Atar
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Forging Process ◽  
Element Modeling

Effect of Preform Height on Die Wear in Hot Forging Process of Idle Gear by Finite Element Modeling

2017 ◽  
Vol 728 ◽  
pp. 36-41 ◽  
Author(s):  
Panuwat Soranansri ◽  
Mahathep Sukpat ◽  
Taweesak Pornsawangkul ◽  
Pinai Mungsantisuk ◽  
Kumpanat Sirivedin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Failure Modes ◽  
Hot Forging ◽  
Wear Depth ◽  
Forging Process ◽  
Element Modeling ◽  
Die Wear ◽  
Forging Die ◽  
Hot Forging Process

In hot forging process, the common failure modes of forging die are wear, fatigue fracture and plastic deformation. Normally die wear is occurred the most frequently and it influents directly to shape, dimension and surface quality of product. For this research, the hot forging process of idle gear was studied to focus on die wear. This product is forged in three steps. There are preform step, rougher step and finisher step. Height of preform shape in preform step was a parameter to study effect on die wear. Archard’s wear model in finite element modeling was used to predict die wear. The finite element modeling was verified by real hot forging process for reliable model and then it was used to determine the optimum preform height to reduce die wear. Finally the result showed that the maximum wear depth on the forging die was reduced 41.2% from original industry process.

Investigation of Thermal Effect on Hot Forging Process of Yoke Flange by Finite Element Modeling

2017 ◽  
Vol 728 ◽  
pp. 54-59 ◽  
Author(s):  
Nuttakorn Sae-Eaw ◽  
Mahathep Sukpat ◽  
Yingyot Aue-u-Lan
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Finite Element Modeling ◽  
Simulation Model ◽  
Material Flow ◽  
Hot Forging ◽  
Isothermal Condition ◽  
Forging Process ◽  
Element Modeling ◽  
Hot Forging Process

Finite Element Modeling (FEM) has been employed widely to analyze material flow behavior and identify potential defects in a hot forging process before try-out. Normally, the isothermal assumption should be used to simulate this process because the forming time was extremely shot around 0. 5 s – 1 s due to a high velocity of a press machine. However, in some cases when the contact pressure and contact area are extremely high, the heat could significantly dissipate to the forming dies. In case of Yoke flange simulation the isothermal condition could not be used to identify the defect as occurring in the real process. The forging defect (i.e. insufficient gap) was found at the apex of a workpiece in the rough or preform step. In this study, the non-isothermal assumption was used for investigating the defects. The forming process was divided in 3 steps; namely the transportation step when the billet was transferred from an induction furnace to the forging dies by conveyer, the rough forging and the finish forging steps. Temperatures, loads and gaps between workpiece and die at each step of the forming processes were measured and compared with the simulation results. For developing the reliable simulation model, the suitable heat transfer coefficients for each step would be determined. The heat transfer during the forming steps had an effect on the material flow and, the non-isothermal simulation model and could identify the insufficient gap in the rough step.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

Tire Vibration Modes and Effects on Vehicle Ride Quality

1993 ◽  
Vol 21 (1) ◽  
pp. 23-39 ◽  
Author(s):  
R. W. Scavuzzo ◽  
T. R. Richards ◽  
L. T. Charek
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Operating Conditions ◽  
Modal Testing ◽  
Ride Quality ◽  
Vibration Modes ◽  
Inflation Pressure ◽  
Passenger Cars ◽  
Element Modeling ◽  
Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

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