PSI - Issue 28

Romanin Luca et al. / Procedia Structural Integrity 28 (2020) 162–170 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 3. Goldak heat source and its parameters

The parameters have been calibrated as in Table 1 to obtain a typical fused zone.

Run Power [W] a [mm] b [mm] c [mm] d [mm] v [mm/s] 1 8000 0.8 7 7.5 8 16 4.7 2 9000 0.9 8 8 8 16 5.8 3 9000 0.9 8 8 8 16 5.8 4 9000 0.9 8 8 8 16 5.8 5 9000 0.9 8 8 8 16 5.8

Table 1. Welding parameters.

Fig. 4. Displacements along the vertical axis after welding

The welding simulation was 30000 s long to let the joint to cool down completely. A fine mesh has been employed, the element length is in the order of 0.7 mm in the weld bead region. For the limited computational capacity available the model has been simplified using a 2D with generalized plane strain model.