Through-thickness metallic pin reinforcements can significantly improve the performance of hybrid metal composite joints, particularly when failing in the high-energy mode of pin pull-out. However, there is a lack of
knowledge on how to promote pull-out across the wide range of joint parameters including geometry and load
conditions. Here, a numerical methodology capturing all relevant pin geometry, material and damage characteristics is proposed, and shown to closely match experimental results. This model was then used to characterise pin failure mode and energy as a function of pin geometry across loading ratios ranging from pure
tensile to pure shear. The numerical model provides extensive insight into the damage sequence and the interaction of damage mechanisms. The investigation also comprehensively reveals how increasing the shear
loading component reduces the pin aspect ratio of height-to-diameter required to maintain pin pull-out. The
results add new knowledge and capability for the optimum design of pin-reinforced hybrid joints.
License type:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Funding Info:
One of the authors, A.T.T. Nguyen acknowledges financial support through a RMIT PhD International Scholarship (RPIS). One of the authors, S. Feih, acknowledges the support from the Agency for Science, Technology and Research (A*STAR) and the Science and Engineering Research Council (SERC) of Singapore through the Additive Manufacturing Centre Initiative (SERC Grant No. 142 68 00088).