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A platform for research: civil engineering, architecture and urbanism
Free vibrations of free spanning offshore pipelines
Highlights A semi-analytical solution for free vibrations of free spanning pipelines has been developed. The problem of initially curved beams under axial loading on partial elastic foundations is solved. Non-linear effects of axial bending coupling are considered in the static solution. The semi-analytical solution compares excellently to non-linear FE solutions. The solution has significantly improved computational efficiency compared to solutions of FE analyses.
Abstract Fast and accurate methods for determining pipeline eigenfrequencies and associated bending stresses are essential to free span design, and hence of great interest to the pipeline industry. The Rayleigh–Ritz approach has been applied in combination with a displacement field taken as a Fourier sine series to obtain a novel, semi-analytical solution to an initially curved Euler–Bernoulli beam on a partial elastic foundation subject to axial force. The proposed methodology for calculation of free span eigenfrequencies determines static and harmonic response with excellent accuracy, and includes non-linear geometric effects and the pipe stiffening effect caused by static deformation due to gravity.
Free vibrations of free spanning offshore pipelines
Highlights A semi-analytical solution for free vibrations of free spanning pipelines has been developed. The problem of initially curved beams under axial loading on partial elastic foundations is solved. Non-linear effects of axial bending coupling are considered in the static solution. The semi-analytical solution compares excellently to non-linear FE solutions. The solution has significantly improved computational efficiency compared to solutions of FE analyses.
Abstract Fast and accurate methods for determining pipeline eigenfrequencies and associated bending stresses are essential to free span design, and hence of great interest to the pipeline industry. The Rayleigh–Ritz approach has been applied in combination with a displacement field taken as a Fourier sine series to obtain a novel, semi-analytical solution to an initially curved Euler–Bernoulli beam on a partial elastic foundation subject to axial force. The proposed methodology for calculation of free span eigenfrequencies determines static and harmonic response with excellent accuracy, and includes non-linear geometric effects and the pipe stiffening effect caused by static deformation due to gravity.
Free vibrations of free spanning offshore pipelines
Vedeld, Knut (author) / Sollund, Håvar (author) / Hellesland, Jostein (author)
Engineering Structures ; 56 ; 68-82
2013-04-17
15 pages
Article (Journal)
Electronic Resource
English
Free vibrations of free spanning offshore pipelines
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