OS-C501

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Offshore Standard DNV-OS-C501, November 2013 Sec.13 Definitions, abbreviations & figures – Page 180 Table 13-2 Definitions of symbols for variables (Continued) γ FM : partial load and resistance factor γ M : partial resistance factors γ Rd : partial model factor, resistance component γ Sd : partial model factors, load component µ : mean value ν : Poisson’s ratio, i.e. major ν 12 , minor ν 21 θ : ply angle ρ : density σ : direct stress, i.e. σ 1 in the main direction, or standard deviation σˆ : strength, or stress to failure {σ} : stress field τ : shear stress, i.e. τ 12 (or σ 12 sometimes) ω : angular velocity Table 13-3 Definitions of subscripts Subscripts b : bending effects ben : bending c : compression core : core corrected : value corrected by using a correction factor cr : critical d : design Delam : delamination E(n) : time curve face : face Fibre : fibre i : effects due to in-plane size of sandwich beam ip : effects due to in-plane size of sandwich panel k : characteristic value Matrix : matrix max : maximum meas : measured value min : minimum nom : nominal ply : ply ref : mean of the measured values Shear : shear sl : shear-loaded SLS : serviceability limit state t : tension tc : core thickness effects typ : typical value ULS : ultimate limit state DET NORSKE VERITAS AS
Offshore Standard DNV-OS-C501, November 2013 Sec.13 Definitions, abbreviations & figures – Page 181 Table 13-4 Definitions of superscripts Superscripts ¯ : maximum direct or shear stress in the structure/component ^ : direct or shear stress of material at failure * : elastic or shear modulus of damaged face or core nl : non-linear lin : linear 0 : initial 1 : final top : top face bottom : bottom face Table 13-5 Definitions of sub-subscripts lin : proportional limit Sub-subscripts 3 Figures 3.1 Ply and laminate co-ordinate systems z,w y,v 3 ’ 2’ 1’ 3 2 1 O x,u Figure 13-1 Local co-ordinate system and symmetry planes in an orthotropic bi-directional ply 3.2 Sandwich co-ordinate system and symbols top E face top t fac z,w x,u d botto E face Figure 13-2 Co-ordinate system, material and geometrical variables for sandwich structures E core , G N A t core botto t fac q(x,y) Mx Mx Nx Tx Tx Nx z,w y,v x,u Figure 13-3 Co-ordinate system, sign conventions, loads and moments for sandwich structures DET NORSKE VERITAS AS
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