Ratcheting behavior of class C wheel steel and its prediction by modified AbdelKarim-Ohno model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F15%3A86098996" target="_blank" >RIV/61989100:27740/15:86098996 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27230/15:86098996
Result on the web
<a href="http://nebula.wsimg.com/69167635dccf61dc4812d2982e567df5?AccessKeyId=810D9ED71AACA9F9CBEB&disposition=0&alloworigin=1" target="_blank" >http://nebula.wsimg.com/69167635dccf61dc4812d2982e567df5?AccessKeyId=810D9ED71AACA9F9CBEB&disposition=0&alloworigin=1</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Ratcheting behavior of class C wheel steel and its prediction by modified AbdelKarim-Ohno model
Original language description
Wear of materials in rail/wheel industry is closely related to the ratcheting phenomenon. The paper presents main results of the experimental research on ratcheting behavior under uniaxial as well as non-proportional loading conducted on the Class C wheel steel. Fatigue failures of all specimens were rather caused by low-cycle fatigue mechanism than by the ratcheting. McDowell's extrapolation was successfully applied to the calculation of twist and shear strain accumulation. A new cyclic plasticity model suitable for the ratcheting behavior prediction was developed within this study. The plasticity model based on the AbdelKarim-Ohno kinematic hardening and Calloch isotropic hardening rules was extended by a memory surface concept of Jiang-Sehitoglu. The model was used to describe the influence of stress amplitude on ratcheting rate of the investigated material. In addition, the advantage of the model is the possibility to calculate the steady ratcheting rate which can be subsequently used for extrapolation of the cycle by cycle accumulated quantity.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů