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| Analytical Methodology of Predicting Mode Ⅰ Stress Intensity Factor for Cracked Panels with Bonded Stiffener |
| HE Shijiu,ZHANG Xiaojing,WANG Hai |
| (School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract Abstract： A theoretical model for distribution of bridging traction in bonded stiffeners which functioned as crack retarder was proposed. An analytical methodology of assessment mode Ⅰ stress intensity factor for cracked panels with bonded stiffeners was developed based on superposition principles. The analysis included the stress intensity factor solution for cracked skin due to broken and intact stiffeners by using displacement compatibility approach, and the stress intensity factor solution for cracked panels due to bridging stiffener. The methodology was verified by using the finite element method (FEM) and the experimental data from various literature sources. The results show that the theoretical model is effective in obtaining the bridging stress and mode Ⅰ stress intensity factor for cracked panels with bonded stiffeners.
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Received: 22 March 2015
Published: 29 February 2016
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