Bulk forming of sheet metal

Merklein, Marion; Allwood, Julian M.; Behrens, Bernd‐Arno; Brosius, Alexander; Hagenah, Hinnerk; Kuzman, Karl; Mori, Ken-ichiro; Tekkaya, A. Erman; Weckenmann, Albert

doi:10.1016/j.cirp.2012.05.007

Cited by 324 publications

(153 citation statements)

References 94 publications

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“…For demonstration purposes, the optimization strategy outlined in the above will now be applied to the identification of material parameters of a high-strength dual-phase steel DP600, which is frequently used in Sheet-Bulk Metal Forming, see e. g. Merklein et al [1]. For the correct modeling of the material behavior an anisotropic elasto-plastic material model has to be used.…”

Section: Example: Parameter Identification Of Dual-phase Steel Dp600mentioning

confidence: 99%

“…Furthermore, ever decreasing development times and increasing demands on the product quality are emerging. A development cycle for the production of near-netshaped functional components [1] as requested in industry, is not imaginable with solely the manufacturer's experience and trial-and-error methods. As a consequence, there is an urgent need for simulations to predict and analyze the forming results in dependence of the input parameters a priori.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On gradient‐based optimization strategies for inverse problems in metal forming

Landkamer¹,

Söhngen²,

Steinmann³

et al. 2017

GAMM-Mitteilungen

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In the context of metal forming, optimization issues typically lead to inverse problems with a least-squares minimization as the objective. Due to the nonlinearities in forming simulations, iterative optimization approaches have to be considered. Gradient-based solution strategies for two inverse problems are proposed and compared to each other. Firstly, the identification of elasto-plastic material parameters is regarded. Secondly, a recently developed approach for the determination of an optimal workpiece design is investigated. As a special feature, both approaches can be coupled in a non-invasive fashion to arbitrary external finite element software via subroutines.

show abstract

Section: Example: Parameter Identification Of Dual-phase Steel Dp600mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On gradient‐based optimization strategies for inverse problems in metal forming

Landkamer¹,

Söhngen²,

Steinmann³

et al. 2017

GAMM-Mitteilungen

View full text Add to dashboard Cite

show abstract

“…However, new technologies or processes have to be developed because, by using existing ones these components cannot be manufactured at all or only by having long process chains and higher costs [4]. Applying bulk forming operations on sheet metals, defined as sheet-bulk metal forming (SBMF), is a promising approach for the manufacturing of these complex components at shortened process chains and simultaneously improved material efficiency [3]. …”

Section: Motivationmentioning

confidence: 99%

“…Regarding for instance the car's engine, a downsizing saves weight, however leads to higher loads for the individual components at an equal performance [2]. For components from this part of the car, like a synchronizer ring, this leads to an integration of functional elements for weight reduction and the application of different materials for increasing the component's strength [3]. Using forming processes is ideal for an ecological mass production of these components.…”

Section: Motivationmentioning

confidence: 99%

Sheet-bulk metal forming – forming of functional components from sheet metals

Merklein

Gröbel

Löffler

et al. 2015

MATEC Web of Conferences

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Abstract. The paper gives an overview on the application of sheet-bulk metal forming operations in both scientific and industrial environment. Beginning with the need for an innovative forming technology, the definition of this new process class is introduced. The rising challenges of the application of bulk metal forming operations on sheet metals are presented and the demand on a holistic investigation of this topic is motivated. With the help of examples from established production processes, the latest state of technology and the lack on fundamental knowledge is shown. Furthermore, perspectives regarding new research topics within sheet-bulk metal forming are presented. These focus on processing strategies to improve the quality of functional components by the application of processadapted semi-finished products as well as the local adaption of the tribological system.

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“…The manufacturing of dies and moulds represents a major operation in the tool-making production chain, because nearly all mass produced discrete parts are formed using manufacturing technologies that employ dies and moulds [33]. The underlying forming technologies consist of sheet metal forming [34], injection moulding and die casting. Each individual technology is characterized by a multitude of factors (e.g.…”

Section: Manufacturing Technologies and Industrial Operationsmentioning

confidence: 99%

Framework proposition and technical guidelines for manufacturers of custom made tools, machinery and special equipment

Tepeš¹,

Krajnik²,

Kopač³

2015

Teh. vjesn.

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Prijedlog načela i tehničke smjernice za proizvođače alata po mjeri, strojeva i specijalne opreme FRAMEWORK PROPOSITION AND TECHNICAL GUIDELINES FOR MANUFACTURERS OF CUSTOM MADE TOOLS, MACHINERY AND SPECIAL EQUIPMENTMatic Tepeš, Peter Krajnik, Janez KopačOriginal scientific paper This paper overviews the state-of-the-art in modern forms of organization, collaboration and flexibility, trends and forecasts of the automotive industry as a representative buyer of tools, machines and special equipment, as well as life cycle management, sustainability and possibility for added value creation in these industry sectors. Based on this, a framework called "smart tool, machine, and special equipment" is proposed. A part of the research done on Slovene manufacturers is presented, where the technological indicators important in the implementation of the proposed framework are identified and ranked regarding to their importance. Additional suggestions by the manufacturers are also provided, as well as critical analysis and discussion of the findings. Keywords: custom tools; flexibility; life cycle management; machines; smart; special equipment; value chain management; virtual organizationPrijedlog načela i tehničke smjernice za proizvođače alata po mjeri, strojeva i specijalne opreme Izvorni znanstveni članak U radu se daje pregled najnovijih dostignuća u modernim oblicima organizacije, suradnje i fleksibilnosti, trendovima i predviđanjima u automobilskoj industriji kao reprezentativnom kupcu alata, strojeva i specijalne opreme, kao i upravljanje vijekom trajanja, održivosti i mogućnosti stvaranja nove vrijednosti u tim industrijskim sektorima. Na temelju toga predlaže se okvirno načelo nazvano "pametni alat, stroj i specijalna oprema". Daje se dio istraživanja provedenog na slovenskim proizvođačima kod kojih su prepoznati tehnološki indikatori važni za implementaciju predloženog načela, te su rangirani u skladu s njihovom važnosti. Daju se i dodatne primjedbe koje su stavili proizvođači, te kritička analiza i rasprava rezultata. Ključne

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Bulk forming of sheet metal

Cited by 324 publications

References 94 publications

On gradient‐based optimization strategies for inverse problems in metal forming

On gradient‐based optimization strategies for inverse problems in metal forming

Sheet-bulk metal forming – forming of functional components from sheet metals

Framework proposition and technical guidelines for manufacturers of custom made tools, machinery and special equipment

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