OS-C501
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Offshore Standard DNV-<strong>OS</strong>-<strong>C501</strong>, November 2013<br />
Sec.5 Materials – sandwich structures – Page 79<br />
Table 5-3 Mechanical static properties for core materials (Continued)<br />
Mechanical parameter Unit Reference in Appendix D<br />
for measurement method<br />
Through thickness elastic constants<br />
E zt core linear Core tensile elasticity modulus normal to the core [GPa] [D.2.1]<br />
plane in the linear range<br />
E zc core linear Core compressive elasticity modulus normal to the [GPa] [D.2.2]<br />
core plane in the linear range<br />
G xz core linear Core shear modulus normal to the core plane in the<br />
linear range<br />
[GPa] [D.2.3]<br />
G yz core linear Core shear modulus normal to the core plane in the [GPa] [D.2.3]<br />
linear range<br />
E zt core non-linear Core tensile elasticity modulus normal to the core [GPa] [D.2.1]<br />
plane in the non-linear range<br />
E zc core non-linear Core compressive elasticity modulus normal to the<br />
core plane in the non-linear range<br />
[GPa] [D.2.2]<br />
G xz core non-linear Core shear modulus normal to the core plane in the [GPa] [D.2.3]<br />
non-linear range<br />
G yz core non-linear Core shear modulus normal to the core plane in the [GPa] [D.2.3]<br />
non-linear range<br />
ν xz core Core Poisson’s ratio normal to the core plane [-] [D.2.1] or [D.2.2]<br />
ν yz core Core Poisson’s ratio normal to the core plane [-] [D.2.1] or [D.2.2]<br />
Through thickness strain (to yield point or to the end of the proportional range)<br />
core linear Core tensile strain normal to the core plane [D.2.1]<br />
ε ∧ zt<br />
zc<br />
ε ∧ xz<br />
ε ∧ yz<br />
ε ∧ zt<br />
core linear<br />
Core compression strain at failure normal to the core<br />
plane<br />
[D.2.2]<br />
core linear Core shear strain at failure normal to the core plane [D.2.4] for balsa<br />
[D.2.3] for other materials<br />
core linear Core shear strain normal to the core plane [D.2.4] for balsa<br />
[D.2.3] for other materials<br />
Through thickness strain to failure<br />
core non-linear Core tensile strain normal to the core plane [D.2.1]<br />
ε ∧ zc<br />
core non-linear Core compression normal to the core plane [D.2.2]<br />
ε ∧ xz<br />
core non-linear Core shear strain normal to the core plane [µ-strain]<br />
(or %)<br />
ε ∧ yz<br />
Through thickness strength (to yield point or to the end of the proportional range)<br />
ε ∧ zt<br />
σ ∧ zc<br />
σ ∧ xz<br />
core non-linear Core shear strain normal to the core plane [µ-strain]<br />
(or %)<br />
core linear Core tensile stress normal to the core plane [N/mm 2 ]<br />
(or MPa)<br />
core linear Core compressive stress normal to the core plane [N/mm 2 ]<br />
(or MPa)<br />
core linear Core shear stress normal to the core plane [N/mm 2 ]<br />
σ ∧ (or MPa)<br />
core non-linear Core shear stress normal to the core plane [N/mm 2 ]<br />
σ ∧ yz<br />
(or MPa)<br />
Through thickness strength to failure<br />
core non-linear Core tensile stress normal to the core plane [N/mm 2 ]<br />
σ ∧ zt<br />
(or MPa)<br />
core non-linear Core compressive stress normal to the core plane [N/mm 2 ]<br />
zc<br />
(or MPa)<br />
core non-linear Core shear stress normal to the core plane [N/mm 2 ]<br />
(or MPa)<br />
σ ∧<br />
σ ∧<br />
xz<br />
[D.2.4] for balsa<br />
[D.2.3] for other materials<br />
[D.2.4] for balsa<br />
[D.2.3] for other materials<br />
[D.2.1]<br />
[D.2.2]<br />
[D.2.4] for balsa<br />
[D.2.3] for other materials<br />
[D.2.4] for balsa<br />
[D.2.3] for other materials<br />
[D.2.1]<br />
[D.2.2]<br />
[D.2.4] for balsa<br />
[D.2.3] for other materials<br />
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