Rank: 1932 based on 64 downloads (last 30 days) and 4 files submitted
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Andreas Almqvist

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Company/University
Lulea University of Technology
Lat/Long
65.5438, 22.122

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Andreas Almqvist is a researcher in Tribology, the science and technology of surfaces in relative motion. He is mainly contributing in modelling the effect of micro-scale surface features, i.e., surface roughness on the lubrication of tribological interface. Examples are; all sorts of bearings, cam-mechanisms, contact between gear teeth, hip-joints, tyre on (wet) road, etc.
More information can be found here: http://www.ltu.se/staff/a/almqvist-1.10189?l=en


 

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Files Posted by Andreas Almqvist View all
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(last 30 days)
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06 May 2014 Screenshot FFT accelerated surface analysis tools package FFT accelerated functions for analysing 1D and 2D signals such surface profiles, surfaces and images Author: Andreas Almqvist data exploration, surface analysis, signal processing, fft, image analysis 18 0
  • 4.0
4.0 | 1 rating
26 Aug 2013 Screenshot An LCP solution of the linear elastic contact mechanics problem An LCP solution of the one-dimensional linear elastic contact mechanics problem Author: Andreas Almqvist linear complementarit..., contact mechanics, pivoting 18 1
  • 4.0
4.0 | 1 rating
02 May 2013 Screenshot A cavitation algorithm Matlab routines solving a linear complementarity problem appearing in lubrication with cavitation Author: Andreas Almqvist lubrication, cavitation, reynolds equation, linear complementarit... 9 0
25 Apr 2013 Screenshot A pivoting algorithm solving linear complementarity problems A matlab implementation of pivoting algorithm solving linear complementarity problems Author: Andreas Almqvist linear complementarit..., pivoting algorithm, lemke 19 0
  • 5.0
5.0 | 1 rating
Comments and Ratings on Andreas Almqvist's Files View all
Updated File Comment by Comments Rating
03 Sep 2014 A pivoting algorithm solving linear complementarity problems A matlab implementation of pivoting algorithm solving linear complementarity problems Author: Andreas Almqvist SYED NAYAB RASOOL

19 Jun 2014 An LCP solution of the linear elastic contact mechanics problem An LCP solution of the one-dimensional linear elastic contact mechanics problem Author: Andreas Almqvist Daniel

Very useful, well written and fast code. However, it lacks dimensional definitions/explanations for the input parameters (Radii, E, iv, g0). It seems there is a mix of meters and millimeter but it is hard to judge the quantities.

Typically:
2/E' = (1-nu1^2)/E1+(1-nu2^2)/E2 is also defined as:
1/E' = (1-nu1^2)/E1+(1-nu2^2)/E2 by Johnson but the factor 2 is compensated for in your calculations of ph and b, but I cannot see whether it is compensated in K as well.

31 Dec 2013 FFT accelerated surface analysis tools package FFT accelerated functions for analysing 1D and 2D signals such surface profiles, surfaces and images Author: Andreas Almqvist Nikhil Kumbhar

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