The Role of the Numerical Simulation in Superplastic Forming Process Analysis and Optimization

2010 ◽  
Vol 433 ◽  
pp. 225-234 ◽  
Author(s):  
Donato Sorgente ◽  
Luigi Tricarico
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Material Characterization ◽  
Process Analysis ◽  
Superplastic Forming ◽  
Metal Sheet ◽  
Forming Process ◽  
Special Regard ◽  
Finite Element Numerical Simulation

Numerical simulation took root in the last few decades in the superplastic forming field as one of the most dominant tools for process analysis and optimization. The big role of the simulation can be found in many areas concerning the study and the implementation of the forming process. The purpose of this paper is to outline some of the main applications of the numerical simulation in superplastic forming that can be found in the material characterization phase, in the simulation of forming tests and in the optimization of the process. A brief overview of results that can be found in literature is given with special regard to Finite Element numerical simulation of metal sheet Superplastic Forming.

Upsetting Process Analysis and Numerical Simulation of Metal Pipe’s End

2013 ◽  
Vol 364 ◽  
pp. 488-492 ◽  
Author(s):  
Yong Lei Su ◽  
Wu Zi Yang ◽  
Chang Ping Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Deformation Zone ◽  
Process Analysis ◽  
New Technology ◽  
Good Match ◽  
Forming Process ◽  
Conical Die ◽  
Metal Deformation ◽  
Simulation Results

Upsetting is a common method in the production of connectors, a new technology to avoid instability of long pipe under compression was taken in this paper, which would get the upsetting shape of long pipe by changing the length of deformation zone. Forming process was simulated by finite element, and some mechanisms of metal deformation and load were obtained. The simulation results showed that: instability was not occurred and one could have specified shape by using conical die upsetting only once. Then the upsetting experiment was conducted, the trail had a good match with simulation results, which expanded upsetting rules, and provided a reference for design of die.

Analysis of Numerical Simulation and Engineering Examples of Drawing-Bulging Forming Parts

2012 ◽  
Vol 246-247 ◽  
pp. 365-369
Author(s):  
Kang Chen ◽  
Cheng Yun Peng ◽  
Hui Liu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Convex Hull ◽  
Deep Drawing ◽  
Material Flow ◽  
Theoretical Calculations ◽  
Case Material ◽  
Forming Process ◽  
Process Plan ◽  
Finite Element Numerical Simulation

Drawing-bulging forming is a forming method both deep drawing forming and bulge forming, it has been studied in a centrifuge cover for instance. The forming processes of the centrifuge cover have been analyzed, and the convex hull forming of the forming processes is a typical drawing-bulging forming. The convex hull forming has been analyzed by the theoretical calculations and finite element numerical simulation. The results shows that the convex hull forming should be earlier than the box-shaped forming, in this case, material flow is more conducive to control. In order to avoid the rupture in the forming process of the convex hull, the convex hull forming can be divided into two steps to complete, it can reduce inward deformation resistance of the external metal, and increase the composition of the deep drawing in the drawing-bulging forming, and ease the thinning of the convex hull of the corresponding location. Finally, the reasonable process plan of the workpiece was determined.

Hot Compression Simulation of Ti75 Alloy Based on DEFORM-3D

2012 ◽  
Vol 229-231 ◽  
pp. 55-58
Author(s):  
Jun Fan
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Method ◽  
Hot Compression ◽  
Strain Rates ◽  
Know How ◽  
Numerical Simulation Method ◽  
Control Objective ◽  
Finite Element Numerical Simulation ◽  
Deform 3D

To obtain the know-how of the deficiency for the filling capability, taking Ti75 alloy as the research object, at the same height of reducing, strain rates during forming as the control objective, the finite element numerical simulation method was used to simulate the hot compression with DEFORM-3D, analyzing the effect of the strain rates on the distribution of strain and stress.

scholarly journals The Effect of Swinging Ball Heads with Different Arrangements in Multi-Point Stretch-Forming Process

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 337 ◽  
Author(s):  
Jian Xing ◽  
Yan-yan Cheng ◽  
Zhuo Yi
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Sheet Metal ◽  
Strain Distribution ◽  
Finite Element Models ◽  
Stretch Forming ◽  
Forming Process ◽  
Forming Quality ◽  
Staggered Arrangement ◽  
Simulation Results

To improve the effect of multi-point stretch forming of sheet metal, it is proposed in this paper to replace a fixed ball head with a swinging ball head. According to the multi-point dies with different arrangements, this research establishes finite element models of the following stretch forming, i.e., fixed ball heads with conventional arrangement, swinging ball heads with conventional arrangement, swinging ball heads with declining staggered arrangement, and swinging ball heads with parallel staggered arrangement, and then numerical simulation is performed. The simulation results show that by replacing a fixed ball head with a swinging ball head, the surface indentation of the part formed was effectively suppressed, the stress and tension strain distribution of the part formed was improved, and the forming quality was improved; the thickness of the elastic pad was reduced, the springback was reduced and the forming accuracy was improved; and when the ball head was applied to a multi-point die with staggered arrangement, a better forming result was achieved, where the best forming result was achieved in combining the swinging ball heads with the multi-point die with a parallel staggered arrangement. Forming experiments were carried out, and the experimental results were consistent with the trend of numerical simulation results, which verified the correctness of the numerical simulation.

Finite Element Simulation of Vacuum Hot Bulge Forming of Titanium Alloy Cylindrical Workpiece

2011 ◽  
Vol 675-677 ◽  
pp. 921-924 ◽  
Author(s):  
Ming Wei Wang ◽  
Chun Yan Wang ◽  
Li Wen Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Titanium Alloy ◽  
Finite Element Simulation ◽  
Process Parameters ◽  
Fe Model ◽  
Analysis Software ◽  
Forming Process ◽  
Element Simulation ◽  
Cylindrical Workpiece

Vacuum hot bulge forming (VHBF) is becoming an increasingly important manufacturing process for titanium alloy cylindrical workpiece in the aerospace industries. Finite element simulation is an essential tool for the specification of process parameters. In this paper, a two-dimensional nonlinear thermo-mechanical couple FE model was established. Numerical simulation of vacuum hot bulge forming of titanium alloy cylindrical workpiece was carried out using FE analysis software MSC.Marc. The effects of process parameter on vacuum hot bulge forming of BT20 titanium alloy cylindrical workpiece was analyzed by numerical simulation. The proposed an optimized vacuum hot bulge forming process parameters and die size. And the corresponding experiments were carried out. The simulated results agreed well with the experimental results.

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