Isodamage curve-based fatigue damage accumulation model considering the exhaustion of static toughness

Autor:	Abílio M.P. De Jesus, José A.F.O. Correia, Ding Liao, Shun-Peng Zhu, Fu-Long Xia, Rita Dantas
Rok vydání:	2020
Předmět:	Irreversible process Work (thermodynamics) Toughness Materials science business.industry General Engineering General Materials Science Fatigue damage Structural engineering business Model validation
Zdroj:	Engineering Failure Analysis. 115:104575
ISSN:	1350-6307
DOI:	10.1016/j.engfailanal.2020.104575
Popis:	Cumulative fatigue damage is a continuous and irreversible process that refers to the degradation of the component mechanical properties under cyclic loadings. In this work, using the concept of isodamage curves, a new non-linear fatigue damage accumulation model is proposed to account for fatigue damage evolution under multiple load levels. In particular, a computational process is established in which the isodamage curves converge into one point due to the exhaustion of static toughness. Experimental data of five materials are used for model validation and comparison. Results indicate that the proposed model provides better life predictions than the other four models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e422cc97688eedf977bfe99f6e70354b https://doi.org/10.1016/j.engfailanal.2020.104575 Zobrazit plný text záznamu Full Text from ScienceDirect