Spectral analysis of simulated acceleration records of deepwater SCR for identification of modal parameters

Rivero-Angeles, F.J.; Vázquez-Hernández, A.O.; Sagrilo, Luís Volnei Sudati

doi:10.1016/j.oceaneng.2012.10.010

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…Progress in Functional Manufacturing Technologies III Finite Element Models (FEM) grids are divided by Solid Brick 8node 45 cell [5,6]. Then the 3D solid model and the FEM model are illustrated in Fig.…”

Section: Mode Parameter Identification By Finite Element Methodsmentioning

confidence: 99%

Weak-Points Diagnosis of Gas Turbine Disk by Modal Parameter Identification

Wang

et al. 2013

KEM

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In order to keep gas turbine disk safe and reliable, and to provide reliable data for the dynamic design or modification of a gas turbine disk, dynamic characteristic of the gas turbine disk has to be obtained. In the paper, the method based on the combination of calculation mode and the experiment mode is proposed to analysis the dynamic characteristic of the gas turbine disk. The modal parameters and the mode shapes are calculated through ANSYS program. On the basis of these modal parameters, the faults of the gas turbine disk are shown and its weak points of the design are illustrated. The reason for deformation is analyzed and relevant measures employed to reduce faults are proposed. By these improvements in question, a guarantee of the gas turbine disk working normally has been available.

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Section: Mode Parameter Identification By Finite Element Methodsmentioning

confidence: 99%

Weak-Points Diagnosis of Gas Turbine Disk by Modal Parameter Identification

Wang

et al. 2013

KEM

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“…Figure 9 depicts a typical composite riser with the loadings on it, such as waves and current. Wave forces are regarded as a critical aspect in any riser study since they aid in determining control of top tension, VIV and fatigue prediction [196][197][198][199]250,[286][287][288][289][290][291][292][293][294][295][296][297]. Based on industry specifications DNV-RP-F202 [269] and DNV-OS-F201 [270], there are four types of loads on composite risers: accidental loads, environmental loads, functional loads and pressure loads, as tabulated in Table 2.…”

Section: Loading Conditionsmentioning

confidence: 99%

“…The highlight of related experimental studies on composite risers, composite tubes, cylinders and shell structures are indicated in Table 6. Since marine risers are tubular structures with varied segments, the experimental tests on composite risers were conducted at microscale levels (on composite materials) [257][258][259] and at macroscale levels (on composite risers with composite tubes) [47,80,307,308], which are benchmarked against those of marine steel risers, such as steel catenary risers [35,286]. It is also crucial to test the failure in risers, as research on carbon-fibre-reinforced composite risers have revealed failure mechanisms [59][60][61][62][63] linked to various loading scenarios [131,134,187,195].…”

Section: Experimental Testsmentioning

confidence: 99%

Review of Composite Marine Risers for Deep-Water Applications: Design, Development and Mechanics

et al. 2022

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In recent times, the utilisation of marine composites in tubular structures has grown in popularity. These applications include composite risers and related SURF (subsea umbilicals, risers and flowlines) units. The composite industry has evolved in the development of advanced composites, such as thermoplastic composite pipes (TCP) and hybrid composite structures. However, there are gaps in the understanding of its performance in composite risers, hence the need for this review on the design, hydrodynamics and mechanics of composite risers. The review covers both the structure of the composite production riser (CPR) and its end-fittings for offshore marine applications. It also reviews the mechanical behaviour of composite risers, their microstructure and strength/stress profiles. In principle, designers now have a greater grasp of composite materials. It was concluded that composites differ from standard materials such as steel. Basically, composites have weight savings and a comparative stiffness-to-strength ratio, which are advantageous in marine composites. Also, the offshore sector has grown in response to newer innovations in composite structures such as composite risers, thereby providing new cost-effective techniques. This comprehensive review shows the necessity of optimising existing designs of composite risers. Conclusions drawn portray issues facing composite riser research. Recommendations were made to encourage composite riser developments, including elaboration of necessary standards and specifications.

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