Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 3American Society of Mechanical Engineers, 2002 - Arctic regions |
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Page 61
... pipe with a straight weld is structurally superior to a pipe with a spiral weld . VERIFICATION OF FINITE ELEMENT MODEL The verification methodology followed in [ 5 ] was used in our study to verify the finite element models of the pipes ...
... pipe with a straight weld is structurally superior to a pipe with a spiral weld . VERIFICATION OF FINITE ELEMENT MODEL The verification methodology followed in [ 5 ] was used in our study to verify the finite element models of the pipes ...
Page 123
... pipe ( wt . % ) . с Si Mn Mo Nb others Ceq Pcm -120 -140 -160 0.3 0.35 0.4 0.45 0.06 0.24 1.82 0.17 0.04 Cu , Ni , V , Ti 0.44 0.19 Ceq = C + Mn / 6 + ( Cu + Ni ) / 15 + ( Cr + Mo + V ) / 5 Pcm = C + Si / 30 + Mn / 20 + Cu / 20 + Ni ...
... pipe ( wt . % ) . с Si Mn Mo Nb others Ceq Pcm -120 -140 -160 0.3 0.35 0.4 0.45 0.06 0.24 1.82 0.17 0.04 Cu , Ni , V , Ti 0.44 0.19 Ceq = C + Mn / 6 + ( Cu + Ni ) / 15 + ( Cr + Mo + V ) / 5 Pcm = C + Si / 30 + Mn / 20 + Cu / 20 + Ni ...
Page 190
... pipes . Pipe B had a yield plateau . Table 3 shows the tensile properties of the pipe in the longitudinal direction . In Table 3 , the yield stress denotes the stress at a 0.5 % nominal strain . Table 3 shows that yield to tensile ratio ...
... pipes . Pipe B had a yield plateau . Table 3 shows the tensile properties of the pipe in the longitudinal direction . In Table 3 , the yield stress denotes the stress at a 0.5 % nominal strain . Table 3 shows that yield to tensile ratio ...
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alloys analysis applied approximately assessment bending calculated carried coating compared composite compressive considered corrosion crack crack growth curve cycles damage defect deformation depth determined developed direction distribution effect element Engineering equation estimated evaluation experience factor failure fatigue field Figure flaw flexible fracture function geometry given Grade heat higher hydrogen important increase initial installation insulation integrity International joint length limit load locations lower material maximum mean measured mechanical method observed obtained Offshore operation parameters performed pipe plate predicted present pressure problem procedure production properties range reliability residual resistance respectively riser rope safety samples shown shows side simulation solution specimens standard steel strain strength stress structure surface Table temperature tensile tension thermal thickness titanium toughness uncertainties variables weld