Results 241 to 250 of about 133,474 (276)
Some of the next articles are maybe not open access.
Novel Five-Axis Forming Press for the Incremental Sheet-Bulk Metal Forming
Key Engineering Materials, 2013The incremental procedure of sheet-bulk metal forming was classified into two different forming sequences, the discrete and the continuous. Based on these two groups, a movement matrix was developed, which captures required kinematic motions to manufacture a variety of functional components.
Peter Sieczkarek +3 more
openaire +1 more source
Amorphous Carbon Coatings for Sheet-Bulk Metal Forming Tools
2020Sheet-bulk metal forming processes are commonly characterized by temporally and locally varying stress conditions, likely to affect material flow during forming and therefore the geometrical accuracy of formed parts. Local modifications of friction conditions can contribute to control the flow of material and simultaneously to reduce process forces and
Tim Weikert, Stephan Tremmel
openaire +1 more source
Mechanism-Based Modelling of Wear in Sheet-Bulk Metal Forming
2020Friction characteristics and wear of sheet-bulk metal forming tools featuring microstructured surfaces are simulated on the mesoscale. Computational homogenisation is used for surface cut-outs on which the structures are geometrically resolved and where friction laws model lower scale roughness. Two approaches are presented for the modelling of wear. A
Markus Schewe, Andreas Menzel
openaire +1 more source
Influence of Superimposing of Oscillation on Sheet-Bulk Metal Forming
Key Engineering Materials, 2013Due to novel processes like sheet-bulk metal forming, the requirements for sheet metal forming are increased. Sheet-bulk metal forming is a new interconnected process in which the part itself is manufactured by deep drawing and the gearing will be produced with bulk forming in a combined process at room temperature.
Bernd-Arno Behrens +2 more
openaire +1 more source
Sheet-bulk metal forming of functional components from coil
2022Die Blechmassivumformung als Anwendung von Massivumformverfahren auf Blech vereint die Vorteile der Blech- und Massivumformung. Aus flächigen Halbzeugen werden dünnwandige und folglich leichte Bauteile mit integrierten Funktionselementen, wie Verzahnungen oder Zapfen, durch einen dreidimensionalen Stofffluss ausgeformt.
openaire +1 more source
Lightweight joining of polymer and polymer-metal sheets by sheet-bulk forming
Journal of Cleaner Production, 2017Abstract This paper presents an environmentally friendly joining process based on sheet-bulk plastic deformation to connect two polymer (or a polymer and a metal) sheets perpendicular to one another. The methodology draws from material characterization and finite element modelling, using an extension of the flow formulation to pressure-sensitive ...
Bragança, Ivo +3 more
openaire +2 more sources
Joining sheets perpendicular to one other by sheet-bulk metal forming
The International Journal of Advanced Manufacturing Technology, 2016This paper presents a variant of the traditional ‘mortise-and-tenon’ joint, which has been used for thousands of years by carpenters and blacksmiths to connect wood or metal parts. The new proposed joint is utilized to fix longitudinally in position two metal sheets (or plates) perpendicular to one other by sheet-bulk metal forming, at room temperature.
Bragança, Ivo +3 more
openaire +2 more sources
Tribological measures for controlling material flow in sheet-bulk metal forming
Production Engineering, 2016Sheet-bulk metal forming (SBMF) is characterized by successive and/or simultaneous occurrence of quite different load conditions regarding stress and strain states. These conditions significantly influence the material flow and thus the geometrical accuracy of the components. To improve the product quality a control of the material flow is required. An
M. Löffler +15 more
openaire +1 more source
Experimental and Simulative Investigations of Tribology in Sheet-Bulk Metal Forming
Key Engineering Materials, 2015Friction has a considerable influence in metal forming both in economic and technical terms. This is especially true for sheet-bulk metal forming (SBMF). The contact pressure that occurs here can be low making Coulomb’s friction law advisable, but also very high so that Tresca’s friction law is preferable. By means of an elasto-plastic half-space model
Florian Beyer +5 more
openaire +1 more source
Machining of Molds with Filigree Structures for Sheet-Bulk Metal Forming
2020In this article investigations on micromilling of hardened tool steels as well as developments for an efficient process design are presented. In the course of this, suitable parameter ranges as well as process instructions are given, with which stable micromilling processes of hardened tool steels can be achieved.
Alexander Meijer, Dirk Biermann
openaire +1 more source