Upper-bound analysis of the rotary forging of a cylindrical billet

Choi, Sun-Jun; Na, K.H.; Kim, J.H.

doi:10.1016/s0924-0136(96)02822-1

Cited by 42 publications

(15 citation statements)

References 1 publication

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“…One of the main aims of these studies is to find a method of detection of pressure distribution on contact surface during individual deformations (Zhang, 1984). Individual approaches consider various assumptions related to the parameter of applied energy (Choi et al, 1997 andCanta et al, 1998) or to the course of metal flow (Standring et al, 1980) or (Wang et al, 2005).…”

Section: Swagingmentioning

confidence: 99%

The Methods of Preparation of Ti-Ni-X Alloys and Their Forming

Kocich¹,

Szurman²,

Kursa³

2013

Shape Memory Alloys - Processing, Characterization and Applications

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Section: Swagingmentioning

confidence: 99%

The Methods of Preparation of Ti-Ni-X Alloys and Their Forming

Kocich¹,

Szurman²,

Kursa³

2013

Shape Memory Alloys - Processing, Characterization and Applications

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“…These processes are being investigated due to their advantages, widely discussed in literature by different authors [1][2][3][4][5][6]. The incremental method is frequently used since it offers load reductions and workability increments in comparison with other processes.…”

Section: Introductionmentioning

confidence: 99%

“…An example of the mathematical complexity compared with the versatility of MUB is clarified in Equations (2)-(7) from Martín's research [21]. The traditional UBT method is expressed in Equation (2), being values of xi illustrated in Equations (3)- (5). With MUB, this complication is avoided and the problem resolution requires less calculation effort, as seen in Equation (6) for module A and Equation (7) for module B.…”

Section: Introductionmentioning

confidence: 99%

Study of the Tool Geometry Influence in Indentation for the Analysis and Validation of the New Modular Upper Bound Technique

et al. 2016

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Focusing on incremental bulk metal forming processes, the indentation process is gaining interest as a fundamental part of these kinds of processes. This paper presents the analysis of the pressure obtained in indentation under the influence of different punch geometries. To this end, an innovative Upper Bound Theorem (UBT) based solution is introduced. This new solution can be easily applied to estimate the necessary force that guarantees plastic deformation by an indentation process. In this work, we propose an accurate analytical approach to analyse indentation under different punches. The new Modular Upper Bound (MUB) method presents a simpler and faster application. Additionally, its complexity is not considerably increased by the addition of more Triangular Rigid Zones. In addition, a two-dimensional indentation model is designed and implemented using the Finite Element Method (FEM). The comparison of the two methods applied to the indentation process analysed-the new Modular Upper Bound technique and the Finite Element Method-reveal close similarities, the new Modular Upper Bound being more computationally efficient.

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“…The advantages of incremental bulk and sheet forming have been investigated for decades and are in detail presented in the literature [1][2][3][4][5][6][7]. This technology is commonly applied in industry, to reduce loads and to increase workability in comparison with conventional monotonic processes.…”

Section: Introductionmentioning

confidence: 99%

Material flow analysis in the incremetal forging technology

et al. 2010

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An incremental forging process created on the basis of the modified orbital forging press is investigated in the paper. Development of the finite element model, which simulates metal flow in this process, is the main objective of the work. This model is used in research on possibility of modification of classical orbital forging technology to obtain more efficient process. Due to the novelty of the developed process, the investigation on path of material flow during deformation is of particular interest in this work. A numerical simulation involve subsequent pressing of a set of anvils into the material. Direction of material flow and strain path change, due to incremental character of deformation, are analysed. The results showing flow of metal under the anvils are presented and discussed in the paper. Zone affected by the incremental character of deformation is identified in narrow region in-between subsequent dies. Examples of results of numerical simulations of modified orbital forging press are presented in the paper, as well.

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Upper-bound analysis of the rotary forging of a cylindrical billet

Cited by 42 publications

References 1 publication

The Methods of Preparation of Ti-Ni-X Alloys and Their Forming

The Methods of Preparation of Ti-Ni-X Alloys and Their Forming

Study of the Tool Geometry Influence in Indentation for the Analysis and Validation of the New Modular Upper Bound Technique

Material flow analysis in the incremetal forging technology

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