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Recent Findings from Vienna University of Technology Provides New Insights into Computational Physics

January 21, 2014



By a News Reporter-Staff News Editor at Physics Week -- Researchers detail new data in Computational Physics. According to news reporting from Vienna, Austria, by VerticalNews journalists, research stated, "We show how data obtained from molecular dynamics (MD) simulations of nanoscale friction should be treated for producing constitutive system parameters with a proper error estimation. A visualisation scheme for discrete atomistic geometries based on the smooth particle method (SPM) was parametrised and validated to yield an accurate and computationallY robust estimation of the contact area between two touching nanoscopic asperities."

The news correspondents obtained a quote from the research from the Vienna University of Technology, "We present some thoughts on the error estimation of the contact forces occurring due to the load and the shearing motion. The variance in the friction force constitutes the main source of error for the fitting of the constitutive system parameters. The dependence of the constitutive system parameters on the number of available data points was also studied."

According to the news reporters, the research concluded: "It was shown that an equal spacing (by load) of the data points can result in better values for the system parameters than the convergence trend suggests."

For more information on this research see: Methods and numerical aspects of nanoscopic contact area estimation in atomistic tribological simulations. Computer Physics Communications, 2014;185(1):217-228. Computer Physics Communications can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Computer Physics Communications - www.elsevier.com/wps/product/cws_home/706710)

Our news journalists report that additional information may be obtained by contacting S. Eder, Vienna Univ Technol, Inst Appl Phys, A-1040 Vienna, Austria. Additional authors for this research include A. Vernes and G. Betz.

Keywords for this news article include: Vienna, Europe, Austria, Computational Physics

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Source: Physics Week


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