Effects of countersunk hole geometry errors on the fatigue performance of CFRP bolted joints
| Autor: | Meng Zhou, Xuda Qin, Hao Li, Yonghang Li, Ende Ge, Xingfeng Cao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Carbon fiber reinforced polymer
Materials science business.industry Mechanical Engineering 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Bolted joint 0210 nano-technology business Joint (geology) |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 236:337-347 |
| ISSN: | 2041-2975 0954-4054 |
| Popis: | Due to good aerodynamic performance and reliability, countersunk bolt joint is one of the most commonly used connection methods for carbon fiber reinforced polymer (CFRP) components in the aircraft. However, the countersunk hole machining process is inevitably accompanied by geometric errors, which will directly affect the mechanical properties of the joint structure. This paper presents a numerical and experimental investigation on the effect of countersunk hole geometry errors on the fatigue performance of CFRP bolted joints. FE model of CFRP countersunk bolted joints with designed geometry errors are established, and the rationality of the FE analysis was verified by fatigue life and failure forms. The CFRP bolted structure failure mechanism under fatigue load and influence of hole-making geometry error (including countersunk fillets radius, countersunk depth, and countersunk angle) on the fatigue life are investigated. Based on the relationship between fatigue life and the geometry error, the corresponding tolerances for CFRP bolt joint countersunk hole are determined as well. The research results can provide a reference for establishing reasonable geometric accuracy requirements for CFRP joint hole machining. |
| Databáze: | OpenAIRE |
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