4.2 Article

Stress-Strain State Analysis and Fatigue Prediction of D16T Alloy in the Stress Concentration Zone Under Combined Tension-Torsion Load

期刊

MECHANIKA
卷 27, 期 5, 页码 368-375

出版社

KAUNAS UNIV TECHNOL
DOI: 10.5755/j02.mech.28454

关键词

stress concentration; finite element method; fatigue; tension-torsion load

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The mechanical properties and fatigue predictions of D16T aluminum alloy specimens were studied through experimental and numerical simulations, along with the demonstration of the influence of holes in engineering components.
Engineering components undergo structural failure in their lifetime due to repetitive loads and therefore cause imbalance in their assembly and compromise their further process. Hence identifying the failure prone areas and predicting the failure modes are of significant importance in order to reduce the risk of damage and improve their working lifetime. An experimental approach was implemented and the data was attempted against finite element method-based numerical simulations. An experimental procedure was carried out on D16T Al-alloy specimens to study their mechanical behaviour and to determine their physical characteristics. The mechanical properties obtained from the experimental study are then attempted against apparent finite element modelling techniques and the material's constitutive behaviour are presented for the tension, torsion and combined tension-torsion loads. The various stress-strain state results of the simulations were used in determining the fatigue predictions and the influence of the presence of holes in the engineering components are demonstrated.

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