7.2.1 The following
symbols are applicable to the Sandwich Construction Rules unless otherwise
stated:
-
|
a
|
= |
length
of the panel at longest edge, in mm |
|
b
|
= |
breadth
of the panel at shortest edge, in mm |
|
d
|
= |
0,5(t1 + t2) +
tc
, in mm |
|
D
|
= |
flexural
rigidity of the sandwich, in Nmm |
| = |
|
|
Ef
|
= |
modulus of elasticity of the top and bottom plates, in N/mm2
|
| = |
2,06 x 105 for steel
|
|
Gc
|
= |
minimum design shear modulus of core material, in N/mm2,
as shown on approval certificate
|
|
t1
|
= |
thickness of the top plate, in mm |
|
t2
|
= |
thickness of the bottom plate, in mm |
|
ta1
|
= |
thickness allowance for the top plate, in mm |
|
ta2
|
= |
thickness allowance for the bottom plate, in mm |
|
tc
|
= |
thickness of the core, in mm |
|
ν |
= |
Poisson's
ratio |
| = |
0,3 |