PSI - Issue 52

Haolin Li et al. / Procedia Structural Integrity 52 (2024) 752–761

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HaolinLi / Structural Integrity Procedia 00 (2023) 000–000

The layer

ℎ ℎ

(a)

(b)

Mid-plane

(d)

Fig. 3. Distributions of the maximum principal strain for six PBCs. (a)-(f) represent PBCs.1-6.

Fig. 4. Deformation of the twill woven composite under the membrane periodic boundary conditions.

displacements. It is seen that the applied pure in-plane boundary conditions lead to out-of-plane deformation since the coupling term B . The distributions of the maximum principal strains of the six PBCs cases are shown in Fig.5.

4.3. Discussion of Computing Time

The convergence and computing time of employing the developed approach in the twill woven composite are in vestigated and presented in Tabls.3. The computing time is compared to the traditional FE method which yields results with the same accuracy as the FFT-based approach. It is seen that the FFT-based approach demonstrates significant time savings compared to the FEM, a finding that becomes even more pronounced with higher resolution.