PSI - Issue 73

Kateřina Matýsková et al. / Procedia Structural Integrity 73 (2025) 100 – 105 Kateřina Matýsková, Marie Horňáková / Structural Integrity Procedia 00 (2025) 000 – 000

104

5

CET0

3.5

CET0_1 CET0_2 CET0_3 CET0_4 ATENA_initial inputs ATENA_modified inputs

3.0

2.5

2.0

Force F R [kN]

1.5

1.0

0.5

0.0

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

Deformation δ t [mm]

Fig. 3. Load-displacement diagrams for the reference concrete.

CET100

3.0

CET100_1 CET100_2 CET100_3 CET100_4 ATENA_initial inputs ATENA_modified inputs

2.5

2.0

Force F R [kN]

1.5

1.0

0.5

0.0

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

Deformation δ t [mm]

Fig. 4. Load-displacement diagrams for the concrete with 100% substitution of fine aggregate.

Table 4. Modified input parameters of CET0 for the 3DNonlinearCementitious2 model. Parameter Value Unit Modulus of elasticity 50.3 GPa Tensile strength 7.6 MPa Fracture energy 30.0 N/m Table 5. Modified input parameters of CET100 for the 3DNonlinearCementitious2 model. Parameter Value Unit Modulus of elasticity 45.6 GPa Tensile strength 4.03 MPa Fracture energy 27.0 N/m It can be seen that the results of numerical simulations vary a lot compared to the results from the experiments. The