Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2American Society of Mechanical Engineers, 2001 - Arctic regions |
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Page 60
... impact forces developing on the flapper - seating ring were also calculated . The flapper assembly shown in Figure 10 , comprising 15000 mesh elements and 25000 nodes , was used for analysis . Other material properties used were ...
... impact forces developing on the flapper - seating ring were also calculated . The flapper assembly shown in Figure 10 , comprising 15000 mesh elements and 25000 nodes , was used for analysis . Other material properties used were ...
Page 379
... impacts at that particular level . The highest value occurs for a depth range from 150 to 350 m . Two distinct peaks occur at rougly the same locations as for the maximum impact speed . The contact stress probability density is shown in ...
... impacts at that particular level . The highest value occurs for a depth range from 150 to 350 m . Two distinct peaks occur at rougly the same locations as for the maximum impact speed . The contact stress probability density is shown in ...
Page 380
... Impact Speed [ m / s ] Figure 12 Maximum impact velocity with depth . Current velocity is 1.7 m / s . As seen from Figure 12 , the impact zone has roughly the same extension as for the previous case . Surprisingly , the highest impact ...
... Impact Speed [ m / s ] Figure 12 Maximum impact velocity with depth . Current velocity is 1.7 m / s . As seen from Figure 12 , the impact zone has roughly the same extension as for the previous case . Surprisingly , the highest impact ...
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amplitude applied approach Arctic Engineering assessment Bay of Campeche calculated coefficient components Conference on Offshore considered corrosion cost crack growth criteria damage deck defect distribution dynamic effect element equation estimate evaluated evidential reasoning approach factor fatigue Figure FPSO frequency function fuzzy given Guedes Soares hydrostatic test inspection planning installation jack-up linear maintenance marine maximum Mechanics and Arctic method monopod nonlinear North West Shelf obtained Offshore Mechanics offshore structures operations optimal parameters peak pipe pipeline prediction probabilistic probability density probability density function probability of failure procedure random variables reliability analysis reliability index response return period Rio de Janeiro riser risk risk based inspection safety seismic ship significant wave height simulation spectral spectrum statistical steel storm stress structural reliability subsea surface Table temperature theory ultimate strength uncertainty valves velocity water depth Weibull distribution wind