PSI - Issue 38

Isabel Huther et al. / Procedia Structural Integrity 38 (2022) 466–476 Huther et al./ Structural Integrity Procedia 00 (2021) 000 – 000

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4. Modelling assumption 4.1. Modelling

The sample is modelled with hexadominant solid elements method. The size of element is 2mm in the interesting area and 3mm for the bulk area. The Figure 4 shows the coarse meshing used. The Surface A is considered as fixed and rigid in all directions and a load is applied on surface B. The load is fully taken by the welds, no contact between plates is considered. The Young modulus and the Poisson coefficient are 210GPa and 0,3 respectively.

Figure 4 Meshing

4.2. Stress concentration factor at weld toe (Kt) The stress concentration factor is calculated using the methodology proposed in the DNVGL-RP-C208 on the Determination of Structural Capacity by Non-linear Finite Element Analysis Methods-DNVGL (2016) [9].

According to Figure 5 and

Figure 6, the stress concentration factor is considered at the maximum plastic deformation location at 10mm from the weld toe. The stress concentration factor K t is defined to 1.94 in this study.