ASRAnetStructural Reliability & Risk Assessment4-8 July 2016Wuhan, ChinaLecture 14 & 15: Stiffened Shells & IlProfessor Purnendu K. DasB.E., M.E., PhD, CEng, CMarEng, FRINA, FIStructE, FIMarEST
Structural Reliability & Risk Assessment 4 – 8 July 2016 Wuhan, China Lecture 14 & 15: Stiffened Shells I & II Professor Purnendu K. Das B.E., M.E., PhD, CEng, CMarEng, FRINA, FIStructE, FIMarEST 1
asRanetIntroductionAn important structural component in buoyant semi-submersible andTension legtypeoffshoreplatforms.Inherent ability to resist high axial loads and bending moments withlateralpressureloadsNumerical techniques to account model complexitiesImportance of Structural reliabilityNeedforarobustclosedformrelationforstrengthevaluationA revised formulation for the strength assessment of ring stiffened andring-stringer stiffened cylindersStatistical comparison of proposed formulation with DNV-RP-C202(2013) andAPIBul2U (2002) codes2
Introduction An important structural component in buoyant semi-submersible and Tension leg type offshore platforms. Inherent ability to resist high axial loads and bending moments with lateral pressure loads. Numerical techniques to account model complexities Importance of Structural reliability Need for a robust closed form relation for strength evaluation A revised formulation for the strength assessment of ring stiffened and ring-stringer stiffened cylinders Statistical comparison of proposed formulation with DNV-RP-C202 (2013) and API Bul 2U (2002) codes 2
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