PSI - Issue 59

Serhii Filipchuk et al. / Procedia Structural Integrity 59 (2024) 588–594 Serhii Filipchuk/ Structural Integrity Procedia 00 (2019) 000 – 000

593

6

Based on the analysis of the above results of the finite element simulation of the impact of 4 types of ammunition for reinforced concrete slabs, it can be concluded that the strength characteristics adopted for concrete of class C80 satisfy the strength conditions (Fig. 6). Under impact conditions, stresses in concrete and reinforcement are within controlled limits and do not exceed limit values. Penetration of the shock pulse occurs to a depth of no more than 1/3 of the height of the plates.

Fig. 6. The combined scheme of the KE model of the body of the reinforcing mesh plate

The nature of the distribution of tensile forces in the armature is predictable and corresponds to the operation of a conventional bending element, except for the impact of a 30 mm striker, which causes the reinforcement rod to break (shift or break) if it is placed in the impact crater zone. The stress isofield for the two plates that was calculated is shown in Fig. 7.

Загружение 1 Изополя напряжений по Txy Единицы измерения - МПа -59

-49.5

-39.6

-29.7

-19.8

-9.9

-0.589

0.589

9.9

19.8

29.7

39.6

49.5

59.5

Z

Y

X

Fig. 7. Isofield of tangential stresses  xy in the body of plate