PSI - Issue 5

Behzad V. Farahani et al. / Procedia Structural Integrity 5 (2017) 1237–1244 Behzad V. Farahani et al./ Structural Integrity Procedia 00 (2017) 000 – 000

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compared to the DIC and FEM results. So, the proposed computational models, particularly RPIM, were validated by obtained DIC results. Hence, the non-linear solution algorithm was successfully implemented in the context of the used meshless method, as well as the algorithm to return the stress to the yield surface.

(a)

(b)

(c)

Fig. 1. Bi-failure specimen; (a) geometry with its dimensions in millimetres, (b) FEM model and (c) RPIM model.

2

1,5

Force [ kN ]

1

0,5

DIC FEM RPIM

0

0

0,05

0,1

0,15

Vertical displacement v 21 [ mm ]

a)

b)

Fig. 2. (a) DIC problem domain and interest points demonstration and (b) force vs. displacement ( v 21 ) for DP600 bi-failure specimen, all methods.

Acknowledgements

The first author truly acknowledges the funding provided by Ministério da Educação e Ciência, Fundação para a Ciência e a Tecnologia (Portugal), under grant PD/BD/114095/2015 and SFRH/BPD/111020/2015. Dr. Moreira acknowledges POPH - QREN-Tipologia 4.2 - Promotion of scientific employment funded by the ESF and MCTES. Authors gratefully acknowledge the funding of Project NORTE-01-0145-FEDER-000022 - SciTech - Science and Technology for Competitive and Sustainable Industries, cofinanced by Programa Operacional Regional do Norte (NORTE2020), through Fundo Europeu de Desenvolvimento Regional (FEDER).