FG-CNT reinforced composite plate vibration control method based on Spark in ocean engineering

Abstract

The invention relates to an FG-CNT reinforced composite plate vibration control method based on Spark in ocean engineering. The method comprises the steps that a latest meshless method IMLS-Ritz is adopted, and a shape function which is good in smoothness and continuous in derivative is fit through values of several unrelated nodes; meanwhile, constitutive relation description of a functionally grated CNT reinforced composite plate shell is improved, and therefore the problem that how to distribute sensors or actuators to the suitable positions of CNTs to reach the optimal position where numerical analysis can be performed on structural strain is solved; the optimal solution of the collocating positions of the actuators is searched through a discrete optimization algorithm, and a cloud computing platform based on the Spark is built for massive computing data. By means of the FG-CNT reinforced composite plate vibration control method based on the Spark in ocean engineering, the problem that in a finite element method, the solution is not convergent or errors are large is solved, the data storing quantity and computing quantity are significantly improved, the computing time is shortened, and the analysis efficiency is enhanced.

Description

technical field [0001] The invention relates to the field of material engineering, in particular to marine engineering, and specifically refers to a spark-based FG-CNT reinforced composite plate vibration control method in marine engineering. Background technique [0002] In marine engineering, offshore wind power has become one of the renewable energies vigorously developed in my country and even the world. The substantial increase in energy demand has put forward higher and higher requirements for wind power technology, especially the blades, one of the key core components of wind turbines. , various mechanical and material properties such as the specific gravity, strength, and corrosion resistance of the manufacturing materials will directly affect the power generation efficiency of the entire unit; at the same time, in the field of ocean transportation, the manufacturing materials of seagoing ships, submarines, and deep-water operating devices need to be It has the charact...

AI Technical Summary

Problems solved by technology

However, for problems such as nonlinear deformation, vibration shape, and crack growth of functionally graded CNT reinforced composites, solving them with the finite element method requires mesh reconstruction, which increases the computational complexity and damages the computational accuracy.

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