OS-C501

Recommendations

Info

Offshore Standard DNV-OS-C501, November 2013 App.A Check-lists for design input – Page 212 Table A-6 Standard variables and corresponding distribution types (Continued) Variable name Distribution type Fracture mechanics Scale parameter on da/ dN curve Lognormal Initial crack size Exponential P.O.D. - curve Lognormal Properties Yield strength (steel) Lognormal Young’s modulus Normal Initial deformation of panel Normal Ship data Still water bending moment Normal Joint still water moment / draught Joint normal Ship speed Lognormal Model uncertainty of linear calculations Normal DET NORSKE VERITAS AS
Offshore Standard DNV-OS-C501, November 2013 App.B Lay-up and laminate specification – Page 213 APPENDIX B LAY-UP AND LAMINATE SPECIFICATION B.1 Unique definition of a laminate B.1.1 B.1.1.1 It is important to characterise a laminate in an unambiguous way. All constituent materials have to be identified. B.1.1.2 A composite laminate is generally made of a number of layers stacked on top of each other. These layers can consist of complicated or simple fibre arrangements. The layers are the units that are physically stacked in the production process. B.1.1.3 The basic building block of a laminate is the ply (lamina). The ply is an orthotropic material and its properties are needed for laminate analysis. B.1.1.4 If reinforcement fabrics are not the same (e.g. a multi axial fabric), both should be identified in a laminate. Guidance note: A tri-axial fabric is typically specified as one fabric layer in production. The orientation of the fabric in the laminate is given with respect to the long axis of the fabric role. However, for laminate calculations the tri-axial fabric shall be described as three orthotropic unidirectional plies. ---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e--- B.1.1.5 The axis of the ply co-ordinate system of each ply shall to be clearly identified. B.1.1.6 The type of the reinforcement and the weight per area in each ply shall be given. B.1.1.7 The stacking sequence of the laminate shall be clearly described. Each ply shall be identified and its orientation in the laminate shall be described. Usually a laminate co-ordinate system x, y, z is chosen. The z- axis is the through the thickness direction. The orientation of the main reinforcement direction of the plies (1- direction) is given relative to the x-direction of the laminate. Table B-1 Descriptions of laminates (a complete description of a laminate given as example). Fabric type, Orientation and Ply Reinforcement * Weight Thickness Orientation Resin Number (mm) Gelcoat - 0 0 None - 0.2 - Vinylester CSM 0 1 1 CSM 400 g/m 2 0.4 isotropic Vinylester WR 90 2 2 WR 50%/50% 800 g/m 2 0.8 0 Vinylester CSM 0 3 3 CSM 400 g/m 2 0.4 isotropic Vinylester CSM 0 4 4 CSM 400 g/m 2 0.4 isotropic Polyester 800/100 90 5 5 CSM 100 g/m 2 0.1 isotropic Polyester Combimat 6 WR 50%/50% 800 g/m 2 0.8 0 Polyester 800/100 90 6 7 CSM 100 g/m 2 0.1 isotropic Polyester Combimat 8 WR 50%/50% 800 g/m 2 0.8 90 Polyester CSM 0 7 9 CSM 400 g/m 2 0.4 isotropic Polyester 90,+45 multiax 90 8 10 SF 400 g/m 2 0.4 0 Polyester 800 g 11 SF 200 g/m 2 0.2 +45 Polyester 12 SF 200 g/m 2 0.2 -45 Polyester 90,+45 multiax 0 9 13 SF 400 g/m 2 0.4 90 Polyester 800 g 14 SF 200 g/m 2 0.2 +45 Polyester 15 SF 200 g/m 2 0.2 -45 Polyester multiax hybrid 90 10 16 CSM 100 g/m 2 0.1 isotropic Polyester combi 17 SF 50%Aramid50%Glass 300 g/m 2 0.3 +45 Polyester 18 SF 50%Aramid50%Glass 300 g/m 2 0.3 -45 Polyester multiax hybrid 90 11 19 CSM 100 g/m 2 0.1 isotropic Polyester combi 20 SF 300 g/m 2 0.3 +45 Polyester 21 SF Aramid 400 g/m 2 0.4 0 Polyester 22 SF 300 g/m 2 0.3 -45 Polyester Twill 90 12 23 WR 70%weft 30%warp 450 g/m 2 0.45 0 Polyester Twill 0 13 24 WR 70%weft 30%warp 450 g/m 2 0.45 90 Polyester Surface Ply 0 14 25 WR 50/50 Polyester 450 g/m 2 0.45 0/90 Polyester DET NORSKE VERITAS AS
Page 1 and 2:
OFFSHORE STANDARD DNV-OS-C501 Compo
Page 3 and 4:
Offshore Standard DNV-OS-C501, Nove
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162: Offshore Standard DNV-OS-C501, Nove
Page 211: Offshore Standard DNV-OS-C501, Nove
show all

OS-C501

Create successful ePaper yourself

Delete template?

Save as template?