Process optimal design in non-isothermal backward extrusion of a titanium alloy by the finite element method

Shin, Tae Jin; Lee, Y.H.; Yeom, Jong‐Taek; Chung, Sung Hoon; Hong, S.S.; Shim, In Ok; Park, N.K.; Lee, C.S.; Hwang, Soonkyu

doi:10.1016/j.cma.2004.10.002

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…1(b) shows the bulging stress state at bottom part, where p is the load stress and t σ is the radial and tangential stress. As for the conventional method named back extrusion [5][6], the workpiece is restricted in three-direction compression stress at the center of bottom surface. According to Miss yield criterion, we can easily obtain its yield condition below:…”

Section: Principle Of Bottom Compression Drawing Methodsmentioning

confidence: 99%

Finite Element Analysis of Bulging Forming for Sheet Metal with Bottom Compression Drawing Method

Lin

Dong

Xiao

et al. 2011

AMR

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For the bulging forming of sheet metal industry, two of the major disadvantages are large punch load and short bulging height, generally referring to the traditional process. In this present work, a new processing technique had been introduced for bulging forming based on bottom compression drawing method. The finite element method (FEM) with DEFORM-2D was used to investigate the bulging process. Besides, the mechanism of dimple defect occurred in bulging process was analysed with numerical simulation. The results showed that the dimple defect divided into four stages in the bulging process, where revealed an inverted cone-shape at the bottom part of the centre workpiece. Moreover, the laboratory experiments were carried out to validate the results of numerical simulation, which showed a good agreement with the FEM simulation results.

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Section: Principle Of Bottom Compression Drawing Methodsmentioning

confidence: 99%

Finite Element Analysis of Bulging Forming for Sheet Metal with Bottom Compression Drawing Method

Lin

Dong

Xiao

et al. 2011

AMR

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“…Shin et al [22] analyzed the backward extrusion process of titanium alloy through finite element analysis to study the effects of friction, speed, and mold shape. Ammu et al [23] developed a systematic method for optimizing the bearing lengths for uniform exit velocity and temperature distribution across a profile.…”

Section: Introductionmentioning

confidence: 99%

Die Design for Extrusion Process of Titanium Seamless Tube Using Finite Element Analysis

Choi

Moon

et al. 2021

Metals

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In this paper, the extrusion process of titanium seamless tubes was studied using several finite element (FE) analyses. First, the finite element result was compared with experimental extrusion data acquired to validate the current analysis. Then, the effect of design parameters of the die shape was numerically analyzed using commercial FE software, Forge NxT, for the metal forming process. Elastic FE analyses were also conducted for dies to analyze the maximum principal stress that affects the early fracture of dies during the extrusion process and the maximum von Mises stress that causes the severe deformation of dies. Consequently, the effect of the corner radius at the exit and land length on the extrusion load and die stress is negligible compared to that of the corner radius at the entrance and die angle. Finally, we suggested a die angle of 60° and a corner radius at the die entrance between 10 and 15 mm as an optimal design for the current extrusion process.

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“…Finite element simulation results also clearly confirmed that the relationships among the radial tip distance, forming load and shear friction factor were linear. Shin et al (2005) presented a new approach to process optimal design in nonisothermal, non-steady metal forming process. They investigated the development of a finite element-based approach for process optimization in forming of a difficult-to-form materials, such as titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Backward Extrusion Process Using Finite Element Method

Abrinia¹,

Orangi²

2010

Finite Element Analysis

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Process optimal design in non-isothermal backward extrusion of a titanium alloy by the finite element method

Cited by 12 publications

References 18 publications

Finite Element Analysis of Bulging Forming for Sheet Metal with Bottom Compression Drawing Method

Finite Element Analysis of Bulging Forming for Sheet Metal with Bottom Compression Drawing Method

Die Design for Extrusion Process of Titanium Seamless Tube Using Finite Element Analysis

Numerical Study of Backward Extrusion Process Using Finite Element Method

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