Abstract

The electrostatic powder spraying machine with excellent performance can effectively promote the application of electrostatic powder spraying production, which has the characteristics of low pollution, energy saving, economy and high film performance. In order to reasonably optimize structural parameters and ensure the reliability of the movable base of an electrostatic powder spraying machine, multi-objective optimization design and reliability analysis were carried out. Firstly, a parametric geometric model and numerical simulation model for the movable base were established according to the working principle and production conditions of the electrostatic powder spraying machine. Secondly, the static and dynamic characteristics of the movable base were analyzed using ANSYS Workbench software, and the distributions of stress, deformation and natural frequency were obtained. Thirdly, the mathematical model for optimum design of the movable base was established. Taking the thickness of the upper support plate, the spacing between the upper and lower support plates, the width of the angle steel edge and the thickness of the angle steel edge as design variables, and taking the mass, natural frequency and maximum deformation as objective parameters, the response surface method were used to analyze the sensitivity of design variables and to optimize the sizes of the movable base. Finally, taking the optimized sizes with high sensitivity as random input variables, the reliability analysis of the structure was carried out by using Monte Carlo method based on Latin hypercube sampling. The results show that the optimal design results satisfying reliability are effective and reliable.

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