摘要
The joint stiffness is an important parameter in the design of composite bolted joints and is influenced largely by the bolt-hole clearance. Aiming at the elastic foundation stiffness kc *, an analytical expression was derived by introducing Liu Cai-Shan's inner cylindrical contact model. This analytical expression can take account of the bolt-hole clearance and it shows that kc * deceases with the increase of clearance. Aiming at the nail-head restraint coefficient kr, an approximate expression was obtained by the strain energy method from a reasonable stress distribution hypothesis. Based on kc * and kr, the analytical solution of the joint stiffness was derived from an elastic foundation beam model. The load-displacement curves of double-lap bolted joints predicted by the analytical method were validated by 3-D detailed FE-models. Finally, the mechanical mechanism of the clearance influence on the joint stiffness was analyzed by finite element method. Moreover, the influences of the clearances form 1-300 μm were given quantitatively by the analytic method.
投稿的翻译标题 | Analytical solution of shear stiffness for double-lap bolted joints with clearances |
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源语言 | 繁体中文 |
页(从-至) | 1510-1517 |
页数 | 8 |
期刊 | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
卷 | 35 |
期 | 6 |
DOI | |
出版状态 | 已出版 - 1 6月 2018 |
关键词
- Analytical method
- Beam on elastic foundation
- Bolted joints
- Clearance
- Cylindrical contact
- Stiffness