ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION
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...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2020-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.031 |
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| _version_ | 1841535815173275648 |
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| author | LI Wei |
| author_facet | LI Wei |
| author_sort | LI Wei |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-d5fd5d100d1e47ff908815542d5f5792 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-d5fd5d100d1e47ff908815542d5f57922025-01-15T02:28:02ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692020-01-014272372730608221ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATIONLI WeiFatigue 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.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.031Fatigue damage accumulationStrength degradationImproved Corten-Dolan modelFatigue life prediction |
| spellingShingle | LI Wei ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION Jixie qiangdu Fatigue damage accumulation Strength degradation Improved Corten-Dolan model Fatigue life prediction |
| title | ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION |
| title_full | ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION |
| title_fullStr | ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION |
| title_full_unstemmed | ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION |
| title_short | ANALYSIS OF NONLINEAR CUMULATIVE DAMAGE MODEL CONSIDERING STRENGTH DEGRADATION |
| title_sort | analysis of nonlinear cumulative damage model considering strength degradation |
| topic | Fatigue damage accumulation Strength degradation Improved Corten-Dolan model Fatigue life prediction |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.031 |
| work_keys_str_mv | AT liwei analysisofnonlinearcumulativedamagemodelconsideringstrengthdegradation |