Nonlinear damage accumulation of concrete subjected to variable amplitude fatigue loading

• Autorzy: Chen Y. , Chen X. , Bu J.

Identyfikatory

DOI

10.24425/119070

• Języki publikacji: EN

Abstrakty

EN

To account for the load sequence effect, damage fatigue models with nonlinearity in propagation and accumulation have been developed. This paper reviews five classical nonlinear fatigue models used to predict the life times of concrete under variable amplitude loadings. Experimental results from literature are used to validate the five classical prediction models. It can be found that Hilsdorf and Kesler model yields unsafe or conservative predictions, and the other four models are more suitable for predicting life times of concrete. In this paper, the author used a new nonlinear damage model based on the nonlinear continuum damage mechanics to predict fatigue life of concrete. The model considers fatigue limit, loading parameters, the unseparable characteristics for the damage parameter and the load sequence effect. The validity of the nonlinear fatigue damage model is checked against tests from literature.

Słowa kluczowe

EN

nonlinear damage; variable amplitude loading; prediction model; concrete

PL

uszkodzenia; model predykcji; beton

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2018
• Tom: Vol. 66, nr 2
• Strony: 157--163
• Opis fizyczny: Bibliogr. 24 poz., tab.

Twórcy

autor

Chen Y.

• School of Architecture and Civil Engineering, Jinling Institute of Technology, Nanjing, Jiangsu, 211169, China
• College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu, 210098, China

autor

Chen X.

• College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu, 210098, China

autor

Bu J.

• College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu, 210098, China

Bibliografia

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• [19] Hamdy, U.M.A. “A damage-based life prediction model of concrete under variable amplitude fatigue loading. Ph.D. thesis, University of Iowa, (1997).
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).