PSI - Issue 37

Khalil Naciri et al. / Procedia Structural Integrity 37 (2022) 469–476 Khalil Naciri et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 6. Distribution of (a) compression, (b) tension cracks at the end of the DMM numerical test.

Fig. 7. Distribution of (a) compression, (b) tension cracks at the end of the MM numerical test.

Similarly to the detailed micro-model, compressive and tensile cracks are mainly located at load position 2. Further tensile cracks are also observed at the left support and at load position 1. The MSM is, therefore, able to reproduce, to a large extent, the results obtained by the DMM. Regarding the computational efficiency, Table 6 summarizes the computation time and memory requirements of the two techniques. The proposed MSM technique was able to save about 99% of time and about 31% of memory, thanks to the adoption of a single material and the elimination of interfaces.

Table 6. Computational efficiency comparison Computation time Memory DMM MSM DMM

MSM 35 MB

363,3 s

3,7 s

24 MB