Detail publikace

Cyclic plasticity models and fatigue criteria for exhaust manifold life assessment in the context of limited material data available

KOŠŤÁL, J. ŠEBEK, F. PETRUŠKA, J. SEIFERT, T.

Originální název

Cyclic plasticity models and fatigue criteria for exhaust manifold life assessment in the context of limited material data available

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The work focuses on predictive capabilities of fundamental cyclic plasticity and fatigue life models, which can be calibrated using limited amount of experiments as specific ones needed for more advanced models are often absent. The analyses are conducted for the synthetic case of exhaust manifold made from cast iron. The thermal boundary conditions from the forced convection were obtained from the computational fluid dynamics considered as a conjugate heat transfer problem. Two rate-independent and temperature-dependent material models were calibrated for structural analyses. Both were validated with experiments on isothermal and anisothermal levels. Sequential thermal–mechanical finite element simulations were performed. Two fatigue life models were employed. The first was a temperature-dependent strain-based fatigue life criterion calibrated from uniaxial data. The second was a temperature-independent energy-based fatigue life criterion resulting in twice lower life than the strain-based criterion, while none of the plasticity models made a significant difference in that prediction.

Klíčová slova

Automotive; crack location; damage; failure; low-cycle fatigue

Autoři

KOŠŤÁL, J.; ŠEBEK, F.; PETRUŠKA, J.; SEIFERT, T.

Vydáno

1. 1. 2022

ISSN

0960-3409

Periodikum

MATERIALS AT HIGH TEMPERATURES

Ročník

39

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

68

Strany do

85

Strany počet

18

URL

https://www.tandfonline.com/doi/full/10.1080/09603409.2021.2013615

BibTex

@article{BUT176397,
  author="Josef {Košťál} and František {Šebek} and Jindřich {Petruška} and Thomas {Seifert}",
  title="Cyclic plasticity models and fatigue criteria for exhaust manifold life assessment in the context of limited material data available",
  journal="MATERIALS AT HIGH TEMPERATURES",
  year="2022",
  volume="39",
  number="1",
  pages="68--85",
  doi="10.1080/09603409.2021.2013615",
  issn="0960-3409",
  url="https://www.tandfonline.com/doi/full/10.1080/09603409.2021.2013615"
}