PSI - Issue 33

R.F.P. Resende et al. / Procedia Structural Integrity 33 (2021) 126–137 Resende et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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common in metals, but it does not account for hydrostatic stresses. On the other hand, the EDP takes this effect into account and hence the minor deviations obtained, along with a slightly better behavior. 5. Conclusions This work tested a meshless method (the RPIM) for strength prediction of adhesively-bonded SLJ. With this purpose, the von Mises (vM) and Exponent Drucker-Prager (EDP) yield criteria were implemented into a user-built meshless method software and the technique was validated with experimental results. P m was estimated by continuum mechanics failure criteria. The  11 results showed that, at P m , the joints with L O =12.5 and 25 mm have plastic strains along the entire bondline, although that is not observed for the other L O .  xy and  y stresses at P m revealed marked peaks at the overlap ends, due to the shear-lag effect and load asymmetry, respectively. All peak stresses obtained by the EDP yield criteria were lower than those obtained by the vM yield criteria, which is due to the hydrostatic stress component in the EDP yield criteria. The experimental strength analysis revealed a significant P m improvement with L O . The best P m predictions were found for L O =25 mm using both yield criteria (up to 2.0%), and then some offset was found for the other L O , up to a maximum of 41.2% for L O =12.5 mm and the EDP criterion. Despite using continuum mechanics-based criteria for P m predictions, the meshless method showed to be a promising numerical tool at predicting the behavior of bonded joints. References Belinha, J., Dinis, L. M. J. S. and Natal Jorge, R. M., 2013. The natural radial element method. International Journal for Numerical Methods in Engineering 93(12), 1286-1313. Bodjona, K. and Lessard, L., 2015. Nonlinear static analysis of a composite bonded/bolted single-lap joint using the meshfree radial point interpolation method. 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