Abstract
This paper presents the development of an enhanced analytical approach for modelling the load distribution in multi-bolt composite joints. The model is a closed-form extension of a spring-based method, where bolts and laminates are represented by a series of springs and masses. The enhancement accounts for static friction effects between the laminates, a primary mechanism of load transfer in highly torqued bolted joints. The method is validated against detailed three-dimensional finite element models and where possible, experimental results. The effect of varying bolt-torque and bolt-hole clearance on the load distribution in a three-bolt, single-lap joint is investigated and the method proves to be robust, accurate and highly efficient. Finally, the method is employed in a parameter study, where increasing bolt torque levels can be used for achieving a more even load distribution in multi-bolt joints.
Original language | English |
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Pages (from-to) | 287-298 |
Number of pages | 12 |
Journal | Composite Structures |
Volume | 93 |
Issue number | 2 |
DOIs | |
Publication status | Published - Jan 2011 |
Keywords
- Analytical model
- Bolted joints
- Clearance
- Composites
- Friction