Condition transmission-based fluid-solid coupling dynamic response algorithm for ocean structure
A technology of marine structure and dynamic response, applied in the field of marine engineering, can solve problems such as low calculation efficiency, achieve the effect of reducing the number of calculation steps and improving calculation efficiency
Active Publication Date: 2018-06-26
OCEAN UNIV OF CHINA
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[0006] In order to solve the problem of low computational efficiency due to the excessive dependence on the time step in the prior art for solving coupled motion responses, a fluid-structure coupled dynamic response algorithm for marine structures based on conditional transfer is proposed. The coupling calculation provides new ideas and technical support for the calculation of the motion response of fluid-solid coupling in marine engineering
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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0040] The fluid-solid coupling dynamic response algorithm of marine structures based on condition transfer of the present invention includes the following steps,
[0041] S1. In each time step, calculate the expression of the Laplace domain motion response equation of the marine structure, and split it into an initial condition item and an external load item;
[0042] Wherein, step S1 includes,
[0043] S11. Laplace transformation is performed on the multi-degree-of-freedom marine structure motion equation including initial conditions;
[0044] Doing Laplace transform on the multi-degree-of-free...
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The invention belongs to the technical field of ocean engineering, and particularly relates to a condition transmission-based fluid-solid coupling dynamic response algorithm for an ocean structure. The algorithm comprises the following steps of S1, in each time step, calculating an expression of a Laplace domain dynamic response equation of the ocean structure, and splitting the expression into aninitial condition item and an external load item; S2, calculating a dynamic response caused by the initial condition item; S3, calculating a dynamic response caused by the external load item; and S4,calculating a time domain coupling dynamic response of the ocean structure. The algorithm considers calculation of fluid-solid coupling from condition transmission, provides new idea and technical support for calculating a dynamic response of the fluid-solid coupling for the ocean engineering, can provide new technical means for work of design, detection and the like of related structures, and has a certain engineering application prospect.
Description
technical field [0001] The invention belongs to the technical field of ocean engineering, and in particular relates to an ocean structure fluid-solid coupling dynamic response algorithm based on condition transfer. Background technique [0002] For marine engineering structures in the flow field, when excited by fluids such as waves and ocean currents in the flow field, the structure will vibrate, which will lead to changes in the flow field, and changes in the flow field will in turn make the structure The fluid force experienced changes, which forms the coupling problem of fluid-structure interaction. Due to the existence of coupling effects, in order to make the structural response meet the design and specification requirements in design or safety assessment, it is very important to analyze the fluid-solid coupling motion response of marine engineering structures. [0003] At present, a lot of research has been carried out at home and abroad on the dynamic response analy...
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IPC IPC(8): G06F17/11G06F17/14
CPCG06F17/11G06F17/14
Inventor 刘福顺
Owner OCEAN UNIV OF CHINA