Influence of the 6061 Aluminium Alloy Thermo-Viscoplastic Behaviour on the Load-Area Relation of a Contact

被引:4
作者
Rudnytskyj, Andre [1 ,2 ,3 ]
Krenn, Stefan [1 ]
Vorlaufer, Georg [1 ]
Gachot, Carsten [2 ]
机构
[1] AC2T Res GmbH, Viktor Kaplan Str 2-C, A-2700 Neustadt, Austria
[2] TU Wien, Inst Engn Design & Prod Dev, Lehargasse 6,Objekt 7,Hoftrakt BD, A-1060 Vienna, Austria
[3] AC2T Res GmbH, Hafenstr 47-51,Top A4-2, A-4020 Linz, Austria
关键词
contact model; viscoplasticity; temperature dependence; load– area relation; contact patch; material model; constitutive relations; finite element method; aluminium alloy; 6061; TRIBOLOGY; SIMULATION;
D O I
10.3390/ma14061352
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The contact between solids in metal-forming operations often involves temperature-dependent viscoplasticity of the workpiece. In order to estimate the real contact area in such contexts, both the topography and the deformation behaviour should be taken into account. In this work, a deterministic approach is used to represent asperities in appropriately shaped quadratic surfaces. Such geometries are implemented in indentation finite element simulations, in which the indented material has thermo-viscoplastic properties. By creating a database of simulation data, investigations in terms of contact load and area for the specifically shaped asperities allow for an analysis on the influence of the material properties on the load-area relation of the contact. The temperature and viscoplasticity greatly define how much load is supported by a substrate due to an indenting asperity, but the description of the deformation behaviour at small values of strain and strain rate is also relevant. The pile-up and sink-in regions are very dependent on the thermo-viscoplastic conditions and material model, which consequently affect the real contact area calculation. The interplay between carried load and contact area of a full surface analysis indicates the role that different sized asperities play in the contact under different thermomechanical conditions.
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页数:21
相关论文
共 55 条
  • [1] Adams G.G., P STLE ASME 2006 INT, P1469, DOI [10.1115/ijtc2006-12296, DOI 10.1115/IJTC2006-12296]
  • [2] Aluminum Association Inc, 2007, ROLL AL MIN MILL
  • [3] [Anonymous], COMSOL Multiphysics
  • [4] [Anonymous], RANDOM GAUSSIAN SURF
  • [5] How to measure the real contact area? A simple marker and relocation foot-printing approach
    Bettscheider, Simon
    Gachot, Carsten
    Rosenkranz, Andreas
    [J]. TRIBOLOGY INTERNATIONAL, 2016, 103 : 167 - 175
  • [6] Bhushan B., 1996, APPL MECH REV, V49, P275, DOI [DOI 10.1115/1.3101928, 10.1115/1.3101928]
  • [7] Using Machine Learning Radial Basis Function (RBF) Method for Predicting Lubricated Friction on Textured and Porous Surfaces
    Boidi, Guido
    da Silva, Marcio Rodrigues
    Profito, Francisco J.
    Machado, Izabel Fernanda
    [J]. SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES, 2020, 8 (04)
  • [8] The ploughing and adhesion of sliding metals
    Bowden, FP
    Moore, AJW
    Tabor, D
    [J]. JOURNAL OF APPLIED PHYSICS, 1943, 14 (02) : 80 - 91
  • [9] BOWDEN FP, 1939, PROC R SOC LON SER A, V169, P391, DOI DOI 10.1098/RSPA.1939.0005
  • [10] Modelling material transfer on a single asperity scale
    de Rooij, M. B.
    van der Linde, G.
    Schipper, D. J.
    [J]. WEAR, 2013, 307 (1-2) : 198 - 208