Issue 64

M. A. Kenanda et alii, Frattura ed Integrità Strutturale, 64 (2023) 266-282; DOI: 10.3221/IGF-ESIS.64.18

A PPENDIX B

 The stiffness coefficients ( ij ij ij ij

ij ij ij ij A ,B ,V ,D ,E ,F ,G ,K ,L ) can be determined as below: ij

 h 2









11 12 22 33 -h 2 A,A,A ,A = C,C,C,C dz 11 12 22 44

(B1)

 h 2









11 12 22 33 -h 2 B,B,B,B = C,C,C,C zdz 11 12 22 44

(B2)

 h 2









2

11 12 22 33 -h 2 E,E,E,E = C,C,C,C zdz 11 12 22 44

(B3)

 h 2









11 12 22 33 -h 2 V ,V ,V ,V = C ,C ,C ,C f(z)dz 11 12 22 44

(B4)

 h 2









11 12 22 33 -h 2 F ,F ,F ,F = C ,C ,C ,C zf(z)dz 11 12 22 44

(B5)

 h 2









2

11 12 22 33 -h 2 H ,H ,H ,H = C ,C ,C ,C (f(z)) dz 11 12 22 44

(B6)

h 2

h 2





  12





  12

 -h 2 D ,D = C g'(z)dz ; G ,G = C zg'(z)dz  11 12 11 12 -h 2

(B7)

h 2



    12 -h 2 K ,K = C f(z)g'(z)dz 11 12

(B8)

h 2

h 2





  55

  11

2

 -h 2 M , M = C (g(z)) dz ; L = C g'(z)g'(z)dz  44 55 11 -h 2

(B9)

282