 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
|
| In English (Mech. Solids): | | 4760 |
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| << Previous article | Volume 58, Issue 4 / 2023 | Next article >> |
| Yuan Liu and Qiwen Xue, "A New Approach to the Combination of Load Interaction Effects and Damage Functions in Fatigue Life Prediction Based on Ductile Dissipation Energy," Mech. Solids. 58 (4), 1202-1213 (2023) |
| Year |
2023 |
Volume |
58 |
Number |
4 |
Pages |
1202-1213 |
| DOI |
10.3103/S0025654423600113 |
| Title |
A New Approach to the Combination of Load Interaction Effects and Damage Functions in Fatigue Life Prediction Based on Ductile Dissipation Energy |
| Author(s) |
Yuan Liu (School of Civil Engineering, Dalian Jiao Tong University, Liaoning Dalian, 116028 China, 15640832511@163.com)
Qiwen Xue (School of Civil Engineering, Dalian Jiao Tong University, Liaoning Dalian, 116028 China, xueqiwen@djtu.edu.cn) |
| Abstract |
To address the failure of the toughness dissipation energy model to capture the effect of inter-load loading history factors on structural fatigue life under variable amplitude loading, in this paper, taking into account the interaction between loads, load order, and real-time damage, the ratio of stress amplitude between two adjacent levels and the real-time fatigue damage degree is introduced into the model calculation, and a new interaction factor related to the real-time fatigue damage function is established to obtain an improved nonlinear fatigue life prediction model. The predictive capability of the improved fatigue life prediction model is verified based on the test data of a variety of commonly used materials, such as 45 steel and aluminum alloy Al-2024-T42, under two-level and multilevel variable amplitude loading. According to the comparison analysis between the model-predicted data and the experimental data, it can be seen that the modified nonlinear fatigue life prediction model in this paper can effectively predict the remaining fatigue life for different materials under the multiplelevel variable amplitude loading. Compared with other models, it is closer to the real experimental value. The data required in the model can be obtained from experiments without introducing additional parameters, which is more suitable for practical engineering. |
| Keywords |
toughness dissipation energy, fatigue life prediction, interaction factor, interaction between loads, nonlinear fatigue accumulation damage |
| Received |
23 January 2023 | Revised |
22 March 2023 | Accepted |
02 May 2023 |
| Link to Fulltext |
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