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| Study on Fatigue Life of Single Lap Joint Considering Fretting |
| Received:September 19, 2011 Revised:December 15, 2011 |
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| DOI： |
| KeyWord:fretting stress intensity factor finite element single lap join |
| Author | Institution |
| YANG Mao-sheng |
Qingdao Branch of Naval Aeronautical and Astronautical University， Qingdao ， China |
| ZHANG Tao |
Unit 92514 of PLA， Yantai ， China |
| CHEN Yue-liang |
Qingdao Branch of Naval Aeronautical and Astronautical University， Qingdao ， China |
| BI Yu-quan |
Qingdao Branch of Naval Aeronautical and Astronautical University， Qingdao ， China |
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| Abstract: |
| A global finite element model and sub-model of single lap joint considering fretting was performed using the commercial code ABAQUS to study the influence of fretting on fatigue life of lap joint. Distribution rules of contacting stress were calculated using this model. The sub-model with the fracture mechanics code FRANC2D/L was reconstructed by substituting bolts with their equivalent loads of normal and shear tractions. Also stress intensity factors along crack lengths were calculated. At last the fatigue life prediction model for single lap joint considering fretting was established, and the experimental data was compared to the computing results. The results showed that fretting has a great effect on the fatigue life of single lap joint. The prediction precision considering fretting is better than the unconsidering one; also the prediction precision of straight hole is better than that of the countersunk clearly. |
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