Issue 63

L. A. Aboul-Nour et alii, Frattura ed Integrità Strutturale, 63 (2023) 134-152; DOI: 10.3221/IGF-ESIS.63.13

ANSYS software. SOLID65 (a 3D finite element with eight nodes) having three degrees of freedom at each node in x, y, and z directions was used to simulate the used LWAC and HSC concretes. LINK 180 (a 3-D spar element) with three degrees of freedom at each node in x, y, and z directions was used to simulate steel reinforcement bars. SOLID185(a 3D finite element with eight nodes) having three degrees of freedom at each node in x, y, and z directions was used to simulate the steel plates at supports and loading points [45]. The properties of used concrete, plates, and steel are given in Tab. 8. Three different mesh sizes of 50, 20, and 10 mm were chosen to study the convergence. From the convergence study, an optimum mesh size of 20 mm was selected for LHCS models so that each couple of various materials could share a similar node between them to obtain accurate results.

Figure 12: Sample representation of developed FE models.

Elastic modulus (MPa)

Compressive strength (MPa)

Yield strength (MPa)

Tensile strength (MPa)

Material

Poisson’s ratio

HSC

58593.75 20437.5

.25 .25

62.5 21.8

- -

4.53 1.28

LWAC

Non-linear steal

200000 200000

.2 .3

- -

525

- -

Linear steel

-

Table 8: Properties of used concrete, plates, and steel.

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