 |
International Society of Science and Applied Technologies |
| Comparison of Fatigue Characteristics of Single Shear Lap Joints with Two Types of Hi-lock Bolts | ||||
| Author | Lei Wang
|
|||
| Co-Author(s) | Jianfeng Yang; Jun Li; Ruijin Zhang; Wenxue Qian
|
|||
| Abstract | This paper presents a comprehensive analysis of the fatigue characteristics of the conventional high-lock bolt (HLB) joints and internal cone bushing high-lock bolt (ICB-HLB) joints. Through experimental testing and finite element (FE) simulation, the installation behavior, fatigue life, fracture locations, and stress-strain distributions of the two configurations were systematically evaluated. The results show that the ICB-HLB joint exhibits superior installation integrity with negligible protrusion formation. Its fatigue life is significantly improved compared to conventional HLB joint, particularly under low-amplitude loading. FE simulation reveal that the design of ICB-HLB achieves more uniform stress distribution after installation, which alleviating residual stress concentration. After loading, the maximum stress amplitude at critical location is further shifted away from the borehole wall, which effectively delaying crack initiation. These findings highlight the ICB-HLB's potential as an optimized fastener solution for aerospace applications requiring enhanced structural reliability.
|
|||
| Keywords | Hi-Lock Bolt, Internal Cone Bushing, Lap Joint, Fatigue Behavior, Finite Element | |||
| Article #: RQD2025-382 | ||||
Proceedings of 30th ISSAT International Conference on Reliability & Quality in Design |