Virtual Element Method for Cross-Wedge Rolling during Tailored Forming Processes

Böhm, Christoph; Kruse, Jens; Stonis, Malte; Aldakheel, Fadi; Wriggers, Peter

doi:10.1016/j.promfg.2020.04.220

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…In literature, studies address widely the mechanics of materials, modeled within the framework of virtual elements, i.e. thermo-elasto-plastic coupled behavior in [2,3], forming processes in [4] or fracture analysis in [5,6]. However, by addressing a crystal plasticity formulation at polycrystalline aggregates, the VE-performance remains still an open question.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Single‐Slip Finite Strain Crystal Plasticity via the Virtual Element Method

Böhm

Hudobivnik

Aldakheel

et al. 2021

Proc Appl Math and Mech

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This work addresses an efficient low order virtual element method (VEM) for the modeling of single-slip crystal plasticity system undergoing finite deformations. VEM has been attracting attention as a novel scheme within the field of computational mechanics. A key advantage of VEM is the ability of constructing an arbitrary element shapes that can be non-convex [1]. Another important aspect is that VEM fits the grain shapes of crystal plasticity within polycrystalline aggregates perfectly. Contrary, classical finite element (FE) approaches request a fine mesh-size at possibly sharp geometric regions, i.e. complex shaped grain boundaries.

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Section: Introductionmentioning

confidence: 99%

Modeling of Single‐Slip Finite Strain Crystal Plasticity via the Virtual Element Method

Böhm

Hudobivnik

Aldakheel

et al. 2021

Proc Appl Math and Mech

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“…CWR of threaded shafts and shafts of non-circular cross-section is also being subject to intensive investigation [11,12]. Multimaterials such as steel and aluminium are used in producing tailored products [13,14]. More knowledge about the theoretical, experimental and technical development of CWR is reviewed by Pater [15] and Tofil and Pater [16].…”

Section: Introductionmentioning

confidence: 99%

The study of central cracking mechanism and criterion in cross wedge rolling

Zhou

Shao

Zhang

et al. 2020

International Journal of Machine Tools and Manufacture

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“…In the collaborative research center 1153 "Tailored Forming", such a process chain has been developed [3], following the concept "Put the right material in the right place". Due to the use of novel material combinations in hot bulk metal forming processes, the development of new evaluation techniques also needs to be considered, e.g., to validate new simulation models [4] for cross-wedge rolling [5]. The distortion induced by the combination of cooling and materials with different thermal expansion coefficients needs to be considered for the analysis of such processes.…”

Section: Introductionmentioning

confidence: 99%

Design, Setup, and Evaluation of a Compensation System for the Light Deflection Effect Occurring When Measuring Wrought-Hot Objects Using Optical Triangulation Methods

Quentin

Reinke

Beermann

et al. 2020

Metals

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In this paper, we present a system to compensate for the light deflection effect during the optical geometry measurement of a wrought-hot object. The acquired 3D data can be used to analyze the formed geometry of a component directly after a hot forging process without waiting for the needed cooling time to room temperature. This may be used to parameterize the process and to detect defect components early in the production process, among others. The light deflection as the deviation from the linear path of the light is caused by an inhomogeneous refractive index field surrounding the hot object. We present the design and setup for a nozzle-based forced air flow actuator, which suppresses the light deflection effect. The design process includes a simulation of the developing field, as well as of the interaction of the field with an external forced air flow. The cooling effect of the air flow is evaluated, and conclusions are drawn from the conflicting interests of good measurement conditions against the forced cooling of the hot object. The findings are then implemented in the physical setup of the suppression system. The system is evaluated using a previously established method based on optical triangulation and fringe projection. Other occurring effects and their influence on the evaluation are considered and discussed.

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Virtual Element Method for Cross-Wedge Rolling during Tailored Forming Processes

Cited by 5 publications

References 29 publications

Modeling of Single‐Slip Finite Strain Crystal Plasticity via the Virtual Element Method

Modeling of Single‐Slip Finite Strain Crystal Plasticity via the Virtual Element Method

The study of central cracking mechanism and criterion in cross wedge rolling

Design, Setup, and Evaluation of a Compensation System for the Light Deflection Effect Occurring When Measuring Wrought-Hot Objects Using Optical Triangulation Methods

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