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Description
  • Pomocí MKP byla modelována mechanika elastoplastické deformace před zakřiveným čelem rovinné únavové trhliny v CCP tělese z Al 2024. Výsledky jsou rozebírány z pohledu okamžité lokální rychlosti určené na základě analýzy kumulace deformační energie. Srovnání teoretického modelu s experimentem ukazuje, že kritická hodnota hustoty deformační energie do lomu není materiálovou konstantou. Kritická hodnota hustoty energie obecně závisí na vzdálenosti od volného povrchu a na délce trhliny. (cs)
  • Elastic-plastic deformation mechanics ahead of the curved fronts of planar fatigue cracks in CCP specimens of Al 2024 was modeled using FEM. The results are discussed in light of the immediate local front rate estimations which are based on the strain energy accumulation analysis. The comparison of the theoretical model with experiments shows that the critical strain energy density to local fatigue fracture is not a material constant. The critical energy density generally depends on both the distance from the free surface and the crack length.
  • Elastic-plastic deformation mechanics ahead of the curved fronts of planar fatigue cracks in CCP specimens of Al 2024 was modeled using FEM. The results are discussed in light of the immediate local front rate estimations which are based on the strain energy accumulation analysis. The comparison of the theoretical model with experiments shows that the critical strain energy density to local fatigue fracture is not a material constant. The critical energy density generally depends on both the distance from the free surface and the crack length. (en)
Title
  • Critical Strain Energy Density Along the Curved Front of the Growing Fatigue Crack
  • Kritická hustota deformační energie podél zakřiveného čela rostoucí trhliny (cs)
  • Critical Strain Energy Density Along the Curved Front of the Growing Fatigue Crack (en)
skos:prefLabel
  • Critical Strain Energy Density Along the Curved Front of the Growing Fatigue Crack
  • Kritická hustota deformační energie podél zakřiveného čela rostoucí trhliny (cs)
  • Critical Strain Energy Density Along the Curved Front of the Growing Fatigue Crack (en)
skos:notation
  • RIV/68407700:21340/05:04115271!RIV06-GA0-21340___
http://linked.open.../vavai/riv/strany
  • 307 ; 310
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  • P(GA101/03/0331)
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  • 516550
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  • RIV/68407700:21340/05:04115271
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  • 3D fatigue crack FEM model; critical strain energy density; curved fatigue crack front; fatigue crack rate prediction (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV
  • [9CA24110E7B8]
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  • Materials Science Forum
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http://linked.open...v/svazekPeriodika
  • 482
http://linked.open...iv/tvurceVysledku
  • Materna, Aleš
  • Oliva, Vladislav
  • Denk, Tomáš
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  • 0255-5476
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  • 21340
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