PSI - Issue 25

Victor Rizov / Procedia Structural Integrity 25 (2020) 88–100

91

Author name / Structural Integrity Procedia 00 (2019) 000 – 000

4

equilibrium of the elementary forces in the beam cross-section:

A j      1 ( ) j      1 ( ) j f j A j f j

N

dA



,

(9)

i

j

M

zdA



,

(10)

i

j

where i N and i M are, respectively, the axial force and the bending moment in the i -th portion of the beam , j A is the area of the cross-section of the j -th layer.

Fig. 1. Linear viscoelastic models.

The basic aim of the present paper is to analyze the influence of the viscoelastic behaviour of the material on the delamination fracture in multilayered beam configurations subjected to creep. For this purpose, four linear