International Journal of Material Forming

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Feasibility study for the manufacturing of hybrid pinion shafts with the cross-wedge rolling process
International Journal of Material Forming - Tập 16 - Trang 1-10 - 2023
Paulina Merkel, Laura Budde, Jan Grajczak, Christian Nowroth, Vannila Prasanthan, Mareile Kriwall, Marius Lammers, Sarah Nothdurft, Jörg Hermsdorf, Jens Twiefel, Ludger Overmeyer, Stefan Kaierle, Jörg Wallaschek, Bernd Breidenstein, Bernd-Arno Behrens, Malte Stonis
The Collaborative Research Center 1153 is investigating an innovative process chain for the production of hybrid components. The hybrid workpieces are first joined and then formed by cross-wedge rolling. Pinion shafts were manufactured to investigate the behavior of the joining zone under increased complexity of the forming process. For this purpose, six types of workpieces produced by three types...... hiện toàn bộ
Flow-induced crystallization in poly-1-butene: the shish-kebab transition
International Journal of Material Forming - - 2008
Peter Van Puyvelde, F. Langouche, Jimmy Baert
Simulation of the forming process for curved composite sandwich panels
International Journal of Material Forming - Tập 13 - Trang 967-980 - 2019
S. Chen, O. P. L. McGregor, A. Endruweit, L. T. Harper, N. A. Warrior
For affordable high-volume manufacture of sandwich panels with complex curvature and varying thickness, fabric skins and a core structure are simultaneously press-formed using a set of matched tools. A finite-element-based process simulation was developed, which takes into account shearing of the reinforcement skins, multi-axial deformation of the core structure, and friction at the interfaces. Me...... hiện toàn bộ
Dyna-Die: Towards Full Kinematic Incremental Forming
International Journal of Material Forming - Tập 1 - Trang 1163-1166 - 2008
V. Franzen, L. Kwiatkowski, G. Sebastiani, R. Shankar, A. E. Tekkaya, M. Kleiner
This article focuses on the realization of a simple and kinematic tool setup for incremental sheet metal forming. It allows achieving a similar geometrical accuracy like a full specific support, but minimizes the tool setup and increases the process flexibility at the same time. In incremental sheet metal forming different process variants are in use. The simplest one is the single point increment...... hiện toàn bộ
On the influence of kinematic hardening on plastic anisotropy in the context of finite strain plasticity
International Journal of Material Forming - Tập 4 - Trang 255-267 - 2011
Ivaylo N. Vladimirov, Michael P. Pietryga, Stefanie Reese
The paper discusses the application of a newly developed material model for finite anisotropic plasticity to the simulation of earing formation in cylindrical cup drawing. The model incorporates Hill-type plastic anisotropy, nonlinear kinematic and nonlinear isotropic hardening. The constitutive framework is derived in the context of continuum thermodynamics and represents a multiplicative formula...... hiện toàn bộ
Innovation by forming technology: motivation for research
International Journal of Material Forming - Tập 2 - Trang 29-38 - 2009
A. Brosius, M. Hermes, N. Ben Khalifa, M. Trompeter, A. E. Tekkaya
This paper focuses on new forming techniques for the improvement of product quality, the reduction of process chains and the saving of our available resources. The presented and discussed technologies cover extrusion of reinforced profiles, bending of profiles, single point incremental forming of polymers, and tool systems made of polymers coated by hard metal as well as re-manufacturing strategie...... hiện toàn bộ
Single point incremental forming of AA6061 thin sheet: calibration of ductile fracture models incorporating anisotropy and post forming analyses
International Journal of Material Forming - - 2019
Shamik Basak, K. Sajun Prasad, Ajay Sidpara, Sushanta Kumar Panda
Research on Friction during Hot Deformation of Al-Alloys at High Strain Rate
International Journal of Material Forming - Tập 1 - Trang 1255-1258 - 2008
P. Petrov, M. Petrov, E. Vasileva, A. Dubinchin
The paper is linked to the investigation of lubricants for massive hot forging. It was observed temperature range of 200-470°C and screw press was used for tests. The research on friction has been done for Al-Mg and Al-Cu-Mg-Fe-Ni aluminium alloys. In this connection, physical and numerical investigation of friction are performed. On the basis of the ring upsetting technique, the effect of tempera...... hiện toàn bộ
A simple and systematic scheme implemented in explicit FEM solver for surface tension effects in powder injection moulding process
International Journal of Material Forming - Tập 12 - Trang 123-134 - 2018
Jianjun Shi, Thierry Barriere, Baosheng Liu, Zhiqiang Cheng
In order to simulate more accurately the powder injection moulding process, the explicit finite element method solver is extended with the surface tension effect. The evaluation of surface tension takes the notion of pressure boundary method, while a simple and systematic scheme is proposed to fit the finite element method solver for the Laplacian operator. Because of the difference in dimension f...... hiện toàn bộ
Thermo-chemical and rheological finite element analysis of the cure process of thick carbon-epoxy composite laminates
International Journal of Material Forming - Tập 2 - Trang 137-140 - 2009
P. Carlone, G. S. Palazzo
This paper deals with the development and the validation of a computational model for the analysis of the thermo-chemical and rheological aspects related to the autoclave cure process of thick carbon-epoxy composite laminate. The transient three dimensional distributions of temperature, reaction rate, degree of cure, and viscosity into the processing material have been evaluated, assuming the time...... hiện toàn bộ
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