Analysis of Stress Mitigation through Defence Hole System in GFRP Composite Bolted Joint

Khudhayer J. Jadee^1, and A.R. Othman²

¹Technical Engineering College-Baghdad, Middle Technical University, Baghdad, Iraq

²School of Mechanical Engineering, Universiti Sains Malaysia, Malaysia

Cite this paper:
Khudhayer J. Jadee and A.R. Othman. Analysis of Stress Mitigation through Defence Hole System in GFRP Composite Bolted Joint. American Journal of Mechanical Engineering. 2015; 3(4):126-134. doi: 10.12691/ajme-3-4-4

Abstract

The effect of the defence hole system (DHS) on the stress distribution around the bolt-hole in glass fibre reinforced polymer (GFRP) composite bolted joint has been investigated using a finite element method. The analyses have been carried out on a double-lap composite bolted joint with various geometric parameters for two cases of without and with DHS. The analyses have taken into account a 3D stress plane condition, in which the circumferential and radial stresses at the bearing region, shear-out and net tension regions of the bolt-hole have been determined. Results showed that adding auxiliary hole near the bolt-hole has contributed in reducing the stresses in the vicinity of the bolt-hole.

Keywords:
defence hole system bolted joint GFRP finite element analysis

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