OS-C501

Offshore Standard DNV-OS-C501, November 2013
Sec.5 Materials – sandwich structures – Page 78
Table 5-3 Mechanical static properties for core materials (Continued)
Mechanical parameter Unit Reference in Appendix D
for measurement method
E yt core non-linear Tensile modulus of elasticity of core transverse to y-
direction in the non-linear range
[GPa] [D.2.1]
E xc core non-linear Compressive modulus of elasticity of core in y- [GPa] [D.2.2]
direction in the non-linear range
G xy core non-linear In plane shear modulus of core in the non-linear range [GPa] [D.2.3]
ν xy core Major Poisson’s ratio of core [-] [D.2.1] or [D.2.2]
ν yx core Minor Poisson’s ratio of core [-] [D.2.1] or [D.2.2]
In-plane strain (to yield point or to the end of the proportional range)
core linear Core tensile strain in x-direction [D.2.1]
ε ∧ xt
core linear Core compressive strain in x-direction [D.2.2]
xc
ε ∧ yt
ε ∧ yc
core linear Core tensile strain in y-direction [D.2.1]
core linear Core compressive in y-direction [D.2.2]
ε ∧ xy
core linear Core in-plane shear strain [D.2.4] for balsa
ε ∧ [D.2.3] for other materials
In-plane strain to failure
(all in-plane strain to yield point or to the end of the proportional range, see above)
core non-linear Core tensile strain in x-direction [D.2.1]
xt
ε ∧ xc
ε ∧ yt
ε ∧ yc
core non-linear Core compressive strain in x-direction [D.2.2]
core non-linear Core tensile strain in y-direction [D.2.1]
core non-linear Core compressive in y-direction [D.2.2]
ε ∧ xy
core non-linear Core in-plane shear [D.2.4] for balsa
ε ∧ [D.2.3] for other materials
In-plane strength (to yield point or to the end of the proportional range)
core linear Core tensile stress in the x-direction [N/mm 2 ] [D.2.1]
σ ∧ xt
(or MPa)
core linear Core compressive stress in x-direction [N/mm 2 ] [D.2.2]
σ ∧ xc
(or MPa)
core linear Core tensile stress at failure in the y-direction [N/mm 2 ] [D.2.1]
σ ∧ yt
(or MPa)
core linear Core compressive stress in the y-direction [N/mm 2 ] [D.2.2]
yc
(or MPa)
σ ∧ xy
In-plane strength to failure
(all in-plane strength, see above)
σ ∧ xt
σ ∧ xc
σ ∧ yt
σ ∧ yc
σ ∧
σ ∧
xy
core linear Core shear stress [N/mm 2 ]
(or MPa)
core non-linear Core tensile stress in the x-direction [N/mm 2 ]
(or MPa)
core non-linear Core compressive in x-direction [N/mm 2 ]
(or MPa)
core non-linear Core tensile stress in the y-direction. [N/mm 2 ]
(or MPa)
core non-linear Core compressive in the y-direction. [N/mm 2 ]
(or MPa)
core non-linear Core shear stress [N/mm 2 ]
(or MPa)
[D.2.4] for balsa
[D.2.3] for other materials
[D.2.1]
[D.2.2]
[D.2.1]
[D.2.2]
[D.2.4] for balsa
[D.2.3] for other materials
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