About: Phenomenological criteria of fatigue life under fretting conditions     Goto   Sponge   NotDistinct   Permalink

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  • Reduced fatigue life is typical for damage process known as fretting (contact with periodically repeating small relative tangential motion of contacting surfaces - slip). Fatigue damage is commonly evaluated using phenomenological criteria calibrated according to these specific conditions. Choice of appropriate criteria and calibration as well as determination of state parameters (stress, strain slip range) needed for their evaluation are general weaknesses of this approach. Fundamentals of the project are1) Comparison of chosen published or newly designed phenomenological fretting fatigue criteria by a systematic way2) Analysis of influence of contact modeling (i.e. including dynamic effects) in state parameters evaluation process onto variance of fretting fatigue life prediction according to these criteria.This is based on experimental evaluation of fretting fatigue life. Relatively simple set-up enabling to vary fretting state parameters is supposed to be designed in the scope of this project. Stress and slip in contact will be computed using FE model of the set-up and used to calibrate chosen criteria. Re-application of calibrated criteria will provide us with fatigue life prediction variances, that, as well as damage location will be used to compare them. (en)
  • -Systematické srovnání řady fenomenologických únavových modelů aplikovaných na podmínky frettingu -Ověření upravených resp. nově navržených únavových modelů zohledňujících vliv skluzů v kontaktní ploše -Zkušenosti se stanovením parametrů únavových modelů MKP. Nové poznatky o vlivu uvažování dynami
Title
  • Phenomenological criteria of fatigue life under fretting conditions (en)
  • Fenomenologická kritéria pro únavové poškozování v podmínkách frettingu
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  • GA101/09/1709
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  • fretting, poškozování, únava, životnost (en)
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  • The project gone according to plan both in terms of expertise and in terms of disbursement of funds. (en)
  • Řešení projektu proběhlo podle plánu jak z hlediska odborného tak i z hlediska čerpání finančních prostředků. (cs)
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  • fretting
  • poškozování
  • únava
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