000012892 001__ 12892
000012892 005__ 20160920162654.0
000012892 04107 $$aeng
000012892 046__ $$k2016-09-05
000012892 100__ $$aNielsen, M.B.
000012892 24500 $$aEfficient response recovery procedures for detailed design of jacket foundations

000012892 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012892 260__ $$bTaylor and Francis Group, London, UK
000012892 506__ $$arestricted
000012892 520__ $$2eng$$aTwo efficient system reduction procedures for detailed design of jacket foundations by post-processing of aero-elastic simulation results based on reduced structural models (superelements) are presented. It is illustrated that the full foundation response can be accurately recovered either via a forcecontrolled approach where the interface forces from the coupled aero-elastic simulations are applied to the non-reduced jacket model along with synchronized hydrodynamic wave loads in a dynamic time simulation, or by direct expansion via the superelement reduction basis. The procedures are illustrated on a coupled aero-elastic model represented by the NREL 5 MW reference wind turbine founded on a comprehensive, high-fidelity jacket model with hydrodynamics defined in Ramboll’s in-house offshore structural analysis program, ROSAP. The performances of both the force-controlled method and the direct expansion approach are compared for superelements based on the Guyan method, the Craig-Bampton method and an augmented Craig-Bampton method. It is shown that the Craig-Bampton method is superior to the Guyan method for dynamic problems irrespective of the recovery method. In particular for cases where wave loads are governing, application of the direct expansion approach calls for the Augmented Craig-Bampton method in order to accurately capture the details of the hydrodynamic loading. It is shown that a compact, yet accurate reduction basis can be obtained by replacing some of the fixed interface modes with load dependent residual vectors.

000012892 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012892 653__ $$a

000012892 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012892 720__ $$aNielsen, M.B.$$iJensen, J.F.$$iAugustyn, D.$$iPedersen, R.R.
000012892 8560_ $$ffischerc@itam.cas.cz
000012892 8564_ $$s879026$$uhttps://invenio.itam.cas.cz/record/12892/files/340.pdf$$yOriginal version of the author's contribution as presented on CD, 340.pdf.
000012892 962__ $$r12552
000012892 980__ $$aPAPER