Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel
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In: Frattura ed Integrità Strutturale , Vol. 2017, No. 42, 01.10.2017.
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TY - JOUR
T1 - Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel
AU - Milosevic, Igor
AU - Winter, Gerhard
AU - Grün, Florian
AU - Kober, Martin
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Nowadays lifetime calculation in the high cycle fatigue region iscommonly based on S/N curves which are modified by different influencesto ensure accurate results. Especially the application of these models isimportant when small components with complex stress distributions are used.The influence of the stress distribution was considered by the stress gradientapproach which is implemented in the lifetime tool FEMFAT. Specimenswith diameters of D4mm and D7.5mm were used to examine the effect of thecalculation modified by the stress gradient. On the one hand regardingdifferent types of this approach it can be shown that the results fit very wellcompared to the testing results but on the other hand a big difference wasobserved when the gradient increases by smaller specimen sizes.
AB - Nowadays lifetime calculation in the high cycle fatigue region iscommonly based on S/N curves which are modified by different influencesto ensure accurate results. Especially the application of these models isimportant when small components with complex stress distributions are used.The influence of the stress distribution was considered by the stress gradientapproach which is implemented in the lifetime tool FEMFAT. Specimenswith diameters of D4mm and D7.5mm were used to examine the effect of thecalculation modified by the stress gradient. On the one hand regardingdifferent types of this approach it can be shown that the results fit very wellcompared to the testing results but on the other hand a big difference wasobserved when the gradient increases by smaller specimen sizes.
KW - High cycle fatigue
KW - Lifetime calculation
KW - Martensitic high strength steel
KW - Stress based approaches
KW - Stress gradient approach
UR - http://www.scopus.com/inward/record.url?scp=85030788768&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85030788768
VL - 2017
JO - Frattura ed Integrità Strutturale
JF - Frattura ed Integrità Strutturale
SN - 1971-8993
IS - 42
ER -
