Method for virtual vibration and impact tests of electromechanical control equipment of ship

Abstract

The invention relates to a method for virtual vibration and impact tests of electromechanical control equipment of a ship. The method comprises the steps that a geometric model of the equipment is built; a finite element model is built; boundary conditions are applied to the finite element model, a modal analysis method is determined, and a virtual modal test is performed on the basis of setting the frequency range of modal analysis; the boundary conditions are applied to the finite element model, a vibration harmonic response analysis method is determined, and a virtual vibration test is performed on the basis of setting the frequency range of vibration analysis; a contact type and a contact parameter between components are defined, and a virtual impact test is performed on the basis of applying the boundary conditions and impact loads on the finite element model; a test result of the dynamic characteristics of the electromechanical control equipment is combined to adjust the parameter for a virtual retest until the error between the virtual test result and test data meets the requirements. Accordingly, the vibration and impact response characteristics of the electromechanical control equipment can be quickly and conveniently predicted, and designing hidden dangers of the electromechanical control equipment are revealed through dynamic property optimization design of the equipment.

Description

technical field [0001] The invention relates to a product virtual simulation technology, in particular to a virtual vibration and impact test method for ship electromechanical control equipment. Background technique [0002] During the service process, ship electromechanical control equipment will inevitably be attacked by weapons such as bombs, missiles, torpedoes, and mines, and withstand non-contact impacts such as transient shock waves in water and bubble pulsation pressure. Under the action of strong impact, the electromechanical equipment of the ship will have shock stress and strain, and the shock response displacement exceeds the standard, etc., which will lead to serious consequences such as damage, function failure, and even loss of combat effectiveness of the electromechanical equipment of the ship. In addition, with the development of computer technology, the finite element method for structural dynamic analysis and calculation has been widely used. However, the...

AI Technical Summary

Problems solved by technology

Carry out virtual tests on different electromechanical control equipment, that is, the structure size, material parameters, boundary and load conditions of the electromechanical equipment or the analysis control and result post-processing requirements have changed, and the finite element modeling, parameter setting and analysis control need to be repeated. process, which greatly limits the calculation efficiency and application range of dynamic performance analysis of virtual test technology products

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