Complete buckling two-dimensional dynamic simulation method of submarine pipeline provided with initial defects introduced with modal method
The invention discloses a complete buckling two-dimensional dynamic simulation method of a submarine pipeline provided with initial defects introduced with a modal method. The method comprises the steps as follows: finite element software ABAQUS is applied according to geometric parameters and physi...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a complete buckling two-dimensional dynamic simulation method of a submarine pipeline provided with initial defects introduced with a modal method. The method comprises the steps as follows: finite element software ABAQUS is applied according to geometric parameters and physical and mechanical parameters of the submarine pipeline, and a characteristic buckling mode of the submarine pipeline is computed; the finite element software ABAQUS is applied according to geometric parameters and physical mechanics of the submarine pipeline and seabed soil mass, and a model used for dynamic buckling analysis is rebuilt, and the initial defects of the submarine pipeline are introduced; and a complete dynamic buckling process of the submarine pipeline is analyzed with an explicit dynamic method. According to the complete buckling two-dimensional dynamic simulation method, a slender submarine pipeline structure can be effectively simulated; moreover, completely smooth initial defects are introduced, |
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