NUMERICAL ANALYSIS OF THE INFLUENCE OF THE FRICTION COEFFICIENT ON STRESS DURING THE EXTRUSION PROCESS OF PERFORATED MATERIAL
Journal Title: Tribologia - Year 2012, Vol 241, Issue 1
Abstract
Numerical analysis of stress, forces, and temperature during axisymmetrical cold extrusion of an aluminium alloy specimen was presented using Deform 3D. The rigid-plastic model was applied. The influence of a friction coefficient on effective and contact stresses in perforated specimens with various holes located on the symmetry axis were analysed. Forces of the extrusion acting on the extrusion ram were analysed considering the influence of various friction coefficient values. Temperatures during extrusion processes with and without friction were compared. For exact analysis of the problem results of the extrusion, perforated specimens were compared with the results of the extrusion of non-perforated specimens.
Authors and Affiliations
Jerzy Piwnik, Maciej Leszczyński
Keywords
Related Articles
- EP ID EP270547
- DOI -
- Views 45
- Downloads 0
THE EFFECT OF TECHNOLOGICAL PROCESSES ON FRETTING WEAR IN A CLAMPED JOINT
The article presents the results of research on the effect of some surface finishing processes (rolling, nitriding, surface hardening, and molybdenum hardening) on fretting wear development in a clamped joint. The tests...
THE ESTIMATION OF THE INFLUENCE OF MIXTURE COMPRESSOR OILS AND REFRIGERANTS ON THE DURABILITY OF NODES OF FRICTION IN COLLING COMPRESSORS
At present lasts the process of changing an old refrigerating mediums (freon which contain chlorine) for new ones, which are more environmental friendly. Apart from an important matter of oils mixing with refrigerating m...
A THOROUGH COMPARISON OF MODEL OILS WITH A MINERAL, SYNTHETIC, WHITE AND NATURAL BASE
The aim of the work was to assess the possibilities of using natural and white oils as potential bases of gear oils. Four model gear oils were tested – with mineral, synthetic hydrocarbon (PAO), white, and natural (rapes...
EXPERIMENTAL INVESTIGATION OF A FOIL BEARING STRUCTURE WITH A POLYMER COATING UNDER STATIC LOADS
Gas foil bearings can operate at very high temperatures and rotational speeds. The operation under such conditions requires developing an appropriate bearing design, including the use of advanced material solutions. This...
Ocena wybranych własności materiałowych polimerowej warstwy ślizgowej hydrodynamicznego łożyska wzdłużnego
Materiały polimerowe stosowane są coraz częściej jako warstwy ślizgowe łożysk hydrodynamicznych. Dzieje się tak dlatego, że wykazują one szereg zalet w porównaniu ze zwyczajowo stosowanymi warstwami ślizgowymi ze stopów...