Eulerian analysis of bulk metal forming processes based on spline-based meshfree method

Hah, Zoo-Hwan; Youn, Sung‐Kie

doi:10.1016/j.finel.2015.07.004

Cited by 7 publications

(2 citation statements)

References 44 publications

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“…The results were in fair agreement with experimental data, but the method had a poor visual representation of the final geometry. Hah and Youn [30] presented an effective Eulerian approach for bulk metal forming based on representing boundaries as non-uniform rational B-spline (NURBS) and the effectiveness of the proposed approach was demonstrated by comparing with other numerical methods. However, this approach had the drawback of a blurred boundary condition imposition.…”

Section: Introductionmentioning

confidence: 99%

A Useful Manufacturing Guide for Rotary Piercing Seamless Pipe by ALE Method

Topa

Cerik

Kim

2020

JMSE

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The development of numerical simulations is potentially useful in predicting the most suitable manufacturing processes and ultimately improving product quality. Seamless pipes are manufactured by a rotary piercing process in which round billets (workpiece) are fed between two rolls and pierced by a stationary plug. During this process, the material undergoes severe deformation which renders it impractical to be modelled and analysed with conventional finite element methods. In this paper, three-dimensional numerical simulations of the piercing process are performed with an arbitrary Lagrangian–Eulerian (ALE) formulation in LS-DYNA software. Details about the material model as well as the elements’ formulations are elaborated here, and mesh sensitivity analysis was performed. The results of the numerical simulations are in good agreement with experimental data found in the literature and the validity of the analysis method is confirmed. The effects of varying workpiece velocity, process temperature, and wall thickness on the maximum stress levels of the product material/pipes are investigated by performing simulations of sixty scenarios. Three-dimensional surface plots are generated which can be utilized to predict the maximum stress value at any given combination of the three parameters.

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Section: Introductionmentioning

confidence: 99%

A Useful Manufacturing Guide for Rotary Piercing Seamless Pipe by ALE Method

Topa

Cerik

Kim

2020

JMSE

View full text Add to dashboard Cite

show abstract

“…The results were in good agreements with experimental data but the method had poor visual representation of the final geometry. Hah and Youn [30] presented an effective Eulerian approach for bulk metal forming based on representing boundaries as Non-Uniform Rational B-Spline (NURBS) and the effectiveness of the proposed approach were demonstrated by comparing with other numerical methods. However, this approach had the drawback of a blurred boundary condition imposition.…”

Section: Introductionmentioning

confidence: 99%

A Useful Manufacturing Guide for Rotary Piercing Seamless Pipe by ALE Method

Topa¹,

Cerik²,

Kim³

2020

Preprint

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The development of numerical simulations is potentially useful in predicting the most suitable manufacturing process and ultimately improving product quality. Seamless pipes are manufactured by rotary piercing process in which round bars are fed between two rolls and pierced by a stationary plug. During this process, the material undergoes severe deformation which renders it impractical to be modelled and analysed with conventional finite element methods. In this paper, three dimensional numerical simulations of the piercing process are performed with Arbitrary Lagrangian-Eulerian (ALE) Formulation in LS DYNA software. Details about the material model as well as the elements formulations are elaborated here and mesh sensitivity analysis was performed. The results of the numerical simulations are in good agreement with experimental data found in the literature and the validity of the analysis method is confirmed. The effects of varying workpiece velocity, process temperature, and wall thickness on the maximum stress levels of the product material/pipes are investigated by performing simulations of sixty scenarios. Three dimensional surface plots are generated which can be utilized to predict the maximum stress value at any given combination of the three parameters.

show abstract