Nonlinear fatigue damage accumulation: Isodamage curve-based model and life prediction aspects

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Shun-Peng Zhu (Author) Other; Ding Liao (Author) Other; Qiang Liu (Author) Other; José A. F. O. Correia (Author) FEUP; Abílio M. P . de Jesus (Author) FEUP

Journal

Title: International Journal of Fatigue

Vol. 128

Pages: 1-13

ISSN: 0142-1123

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 29 Citations

Other information

Authenticus ID: P-00Q-T41

DOI: 10.1016/j.ijfatigue.2019.105185

Abstract (EN): Cumulative fatigue damage analysis and life prediction of engineering structures/components is vital for ensuring their structural integrity and operational reliability under variable amplitude loadings. In this regard, a new nonlinear fatigue damage accumulation model is proposed by introducing a damage function related to the isodamage curves and remaining life aspects. Specifically, its damage exponent is refined by considering effects of loading history. Experimental data from tests available in literature are utilized for model validation and comparison. Compared with four existing models, the proposed model shows higher precision for cumulative damage modelling and fatigue life prediction than others. Moreover, it improves the deficiencies inherent in other rules under the promise of maintaining its simplicity in practice.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13