Abstract

This paper uses the professional finite element analysis software ANSYS to process a certain type of power regulating inverter. The overall finite element model of the inverter is established then the three-way impact condition is analysed according to the requirements of GJB 1060.1-91. Through the modal analysis in ANSYS software, the natural frequency and natural vibration mode of the inverter are calculated. Based on modal analysis of the inverter, the DDAM shock spectrum analysis function is used to analyse the impact condition of the inverter. Through the calculation of the impact condition, the deformation and stress state of the inverter structure under various working conditions are obtained. By analysing the calculation results, the weak position of the inverter structure is found and the corresponding optimization scheme is proposed to improve the dynamic performance and improve the electron. The overall dynamic performance of the inverter cabinet also provides an important reference for the design of subsequent electronic cabinets.

Highlights

  • On electrical equipment for ships, anti-vibration and anti-shock capability is one of the most important standards for electronic equipment

  • Based on finite element principle, this paper simulates the structure of inverter using ANSYS software and analyse the dynamic performance

  • The modal calculation needs to be performed in imperial units before the Dynamic Design Analysis Method (DDAM) analysis[4]

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Summary

Introduction

On electrical equipment for ships, anti-vibration and anti-shock capability is one of the most important standards for electronic equipment. It has been able to model the product directly in software and can calculate the simulation of structure, fluid, electromagnetic field, sound field, etc. In simulation, it can quickly adjust the model and parameters to achieve the purpose of design and experiment. Based on finite element principle, this paper simulates the structure of inverter using ANSYS software and analyse the dynamic performance. Finite element analysis method requires model division grid. The original model needs to be simplified before mesh grid partition and the calculation[2].

Meshing and spring settings
Modal calculation
Impact condition setting
Analysis and improvement of impact simulation calculation results
Conclusion

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