Abstract
Fatigue damage accumulation and strength degradation occur simultaneously and interact with each other during service of engineering structures. In order to establish an improved Corten-Dolan cumulative damage model that takes the effects of strength degradation in consideration, strength degradation coefficient was deduced by analyzed the strength degradation model,then the exponential parameter d in the Corten-Dolan model was defined as an exponential function related to the strength degradation coefficient. Effectiveness of the improved Corten-Dolan model was verified by fatigue test data of material and comparison with other references. The results show that the improved Corten-Dolan model predicts fatigue life accurately, prediction is more accurate than the traditional Corten-Dolan model.
| Translated title of the contribution | Analysis of nonlinear cumulative damage model considering strength degradation |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 723-727 |
| Number of pages | 5 |
| Journal | Jixie Qiangdu/Journal of Mechanical Strength |
| Volume | 42 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 15 Jun 2020 |
| Externally published | Yes |