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NONLINEAR ANALYSIS OF OFFSHORE STRUCTURES UNDER WAVE LOADINGS

مؤلف البحث
Shehata E. Abdel Raheem,
Elsayed M. A. Abdel Aa,
Aly G. A. Abdel Shafy and
Fayez K. Abdel Seed
المشارك في البحث
سنة البحث
2012
مجلة البحث
Journal of Engineering Sciences
الناشر
Assiut University
عدد البحث
Vol..40 -No..3
تصنيف البحث
2
صفحات البحث
673-687
موقع البحث
http://www.aun.edu.eg/faculty_engineering/jes/pAbstract.php?JP_ID=1264
ملخص البحث

The structural design requirements of an offshore platform subjected wave induced forces and moments in the jacket can play a major role in the design of the offshore structures. For an economic and reliable design; good estimation of wave loadings are essential. A nonlinear response analysis of a fixed offshore platform under wave loading is presented, the structure is discretized using the finite element method, wave force is determined according to linearized Morison equation. Hydrodynamic loading on horizontal and vertical tubular members and the dynamic response of fixed offshore structure together with the distribution of displacement, axial force and bending moment along the leg are investigated for regular and extreme conditions, where the structure should keep production capability in conditions of the one year return period wave and must be able to survive the 100 year return period storm conditions. The result of the study shows that the nonlinear response investigation is quite crucial for safe design and operation of offshore platform.