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A contact detection algorithm for superellipsoids based on the common-normal concept

Wellmann, Christian; Lillie, Claudia; Wriggers, Peter (Bingley : Emerald Group Publishing Ltd., 2008)

Purpose - The paper aims to introduce an efficient contact detection algorithm for smooth convex particles. Design/methodology/approach - The contact points of adjacent particles are defined according to the common-normal ...
Endoscopic fringe projection for in-situ inspection of a sheet-bulk metal forming process

Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2015)

Sheet-bulk metal forming is a new production process capable of performing deep-drawing and massive forming steps in a single operation. However, due to the high forming forces of the forming process, continuous process ...
Energy-efficient Drive Concepts in Metal-forming Production

Behrens, Bernd-Arno; Bouguecha, Anas; Krimm, Richard; Teichrib, Sergej; Nitschke, Thomas (Amsterdam : Elsevier, 2016)

Nowadays, efficient drive solutions for the production industry are more important than ever. In view of this, new energy-efficient drive concepts for forming presses and sheet metal feeding systems are developed at the ...
Evaluation of micro-damage by acoustic methods

Gerstein, Gregory; Briukhanov, Arkadii; Gutknecht, Florian; Volchok, Natalia; Clausmeyer, Till; Nürnberger, Florian; Tekkaya, A. Erman; Maier, Hans Jürgen (Amsterdam : Elsevier B.V., 2018)

Several methods for the determination of integral damage in sheet metal are reviewed and investigated at the example of the ferritic steel DC04. A novel method to determine damage in cylindrical rings is proposed. Such a ...
Experimental Characterization and Material Modelling of an AZ31 Magnesium Sheet Alloy at Elevated Temperatures under Consideration of the Tension-Compression Asymmetry

Behrens, Bernd-Arno; Bouguecha, Anas; Bonk, Christian; Dykiert, M. (Bristol : Institute of Physics Publishing, 2017)

Magnesium sheet alloys have a great potential as a construction material in the aerospace and automotive industry. However, the current state of research regarding temperature dependent material parameters for the description ...
Experimental setup to characterize flow-induced anisotropy of sheet metals

Gutknecht, F.; Gerstein, G.; Traphöner, H.; Clausmeyer, T.; Nürnberger, F. (Bristol : Institute of Physics Publishing, 2018)

For many metals, a transient variation of the yield stress can be observed when changing the orientation of a load-path. Such behavior affects the manufacturing process itself, e.g. by increasing forming forces, altered ...
Fabrication of thermoformable circuits by laser patterning of metallized thermoplastic foils

Wojakowski, Bodo; Klug, Ulrich; Düsing, Jan; Kling, Rainer (Amsterdam : Elsevier B.V., 2010)

High-resolution laser patterning offers innovative methods for the manufacturing of three dimensional interconnect devices. The process chain presented in this paper uses cost efficient metal thin-films sputtered on ...
Fiber-optic fringe projection with crosstalk reduction by adaptive pattern masking

Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2017)

To enable in-process inspection of industrial manufacturing processes, measuring devices need to fulfill time and space constraints, while also being robust to environmental conditions, such as high temperatures and ...
Finite element analysis regarding the forming behaviour of symmetric hybrid structures consisting of two sheet metal outer layers and a thermoplastic core

Behrens, Bernd-Arno; Bouguecha, Anas; Bonk, Christian; Schulze, H. (Bristol : Institute of Physics Publishing, 2017)

To face challenges like damping effects or weight reduction in the automotive sector, new hybrid material combinations are developed. One possibility is the combination of several symmetric material layers with varying ...
Forming and Joining of Carbon-Fiber-Reinforced Thermoplastics and Sheet Metal in One Step

Behrens, Bernd-Arno; Hübner, Sven; Grbic, Nenad; Micke-Camuz, Moritz; Wehrhane, Tim; Neumann, André (London : Elsevier Ltd., 2017)

The processing and component properties of metals have led to their worldwide success in mechanical engineering. Their advantages are high ductility, efficient production methods, good joining ability and nearly isotropic ...
Forming sheets of metal and fibre-reinforced plastics to hybrid parts in one deep drawing process

Behrens, Bernd-Arno; Hübner, Sven; Neumann, André (Amsterdam : Elsevier, 2014)

Each material has its own advantages and disadvantages in terms of its mechanical, chemical and physical properties. Metallic materials are comparatively ductile and easy to process. Fibre reinforced plastics are very stiff ...
Forming-induced Gloss Reduction of Coil Coated Sheets for White Goods

Behrens, Bernd-Arno; Hübner, Sven; Gaebel, Christoph Michael (London : Elsevier Ltd., 2017)

In the household appliance industry piecework coating of body components has been successively substituted by usage of coil-coated sheets. For components with low strains or components not visible for the customer and ...
Influences on the formability and mechanical properties of 7000-aluminum alloys in hot and warm forming

Behrens, Bernd-Arno; Nürnberger, F.; Bonk, Christian; Hübner, S.; Behrens, S.; Vogt, H. (Bristol : Institute of Physics Publishing, 2017)

Aluminum alloys of the 7000 series possess high lightweight potential due to their high specific tensile strength combined with a good ultimate elongation. For this reason, hot-formed boron-manganese-steel parts can be ...
Intelligent monitoring and recognition of the short-circuiting gas-metal arc welding process

Wu, C.S.; Hu, Q.X.; Sun, J.S.; Polte, T.; Rehfeldt, D. (London : SAGE Publications Ltd., 2004)

MOE Key Lab of Liquid Structure and Heredity of Materials, Institute of Materials Joining, Shangdong University, 73 Jingshi Road, Jinan 250061, People's Republic of China This paper introduces an intelligent system for ...
Local Heat Treatment in Draw Bending for Profiles of Manganese Boron Steel 22MnB5

Behrens, Bernd-Arno; Bonk, Christian; Hübner, Sven; Uhe, Johanna; Klie, Roman; Moritz, Jörn (London : Elsevier Ltd., 2017)

Due to the increasing demand for vehicles with a low fuel consumption and consequently low emissions, lightweight construction is an important task in the automotive industry. High-strength profile parts reduce the total ...
Metal forming tool monitoring based on a 3D measuring endoscope using CAD assisted registration

Hinz, Lennart; Kästner, Markus; Reithmeier, Eduard (Basel : MDPI AG, 2019)

In order to provide timely, reliable, and comprehensive data for the maintenance of highly stressed geometries in sheet-bulk metal forming tools, this article features a possible setup by combining a 3D measuring endoscope ...
Microstructural characterization and simulation of damage for geared sheet components

Gerstein, G.; Isik, K.; Gutknecht, F.; Sieczkarek, P.; Ewert, J.; Tekkaya, A.E.; Clausmeyer, T.; Nürnberger, F. (Bristol : Institute of Physics Publishing, 2017)

The evolution of damage in geared components manufactured from steel sheets was investigated, to analyse the influence of damage caused by the sheet-bulk-metal forming. Due to the inhomogeneous and multi-axial deformation ...
Non-local ductile damage formulations for sheet bulk metal forming

Beese, Steffen; Loehnert, Stefan; Wriggers, Peter (Bristol : Institute of Physics Publishing, 2016)

A ductile damage model for sheet bulk metal forming processes and its efficient and accurate treatment in the context of the Finite Element Method is presented. The damage is introduced as a non-local field to overcome ...
Numerical analysis of a deep drawing process with additional force transmission for an extension of the process limits

Behrens, Bernd-Arno; Bonk, Christian; Grbic, Nenad; Vucetic, Milan (Bristol : Institute of Physics Publishing, 2017)

By sheet metal forming processes the forming limits and part characteristics are defined through the process specific loads. In deep drawing processes the maximum deep draw ratios as well as the springback behaviour of the ...
On modelling of shear fracture in deep drawing of a high-strength dual-phase sheet steel

Behrens, Bernd-Arno; Bonk, Christian; Peshekhodov, I. (Bristol : Institute of Physics Publishing, 2017)

The paper presents application of fracture behaviour characterisation results of a dual-phase sheet steel DP600 to an FEA of its deep-drawing for shear fracture prediction. The characterisation results were obtained with ...

Now showing items 1-20 of 28

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