Objective:Considering to the structural characteristics of a manual fire alarm button that relies on the self deformation and self-locking of the pressure bar,in order to meet the requirements of the national standard non action experiment and improve the stress distribution,finite element analysis and optimization design were carried out on the key components of the manual fire alarm button.Methods:The assembly model of pressure bar,pressing plate and bottom plate was established through Creo,and the model was constrained and loaded during the simulation experiment.The Statics finite element analysis was completed using Ansys Workbench,and the maximum stress value of manual fire alarm button was calculated.The objectives,variable parameters and constraints in multi-objective optimization design were determined,and the sensitivity of each parameter variable to the results was analyzed,by using the optimization module and the Scanning screening optimization method to optimize the design of key components.While meeting the requirements of national standards,the optimal fitting value to optimize the structure of the pressure bar was selected.Results:The maximum stress on the pressure rod of the optimized manual fire alarm button decreased by 19.6%.Conclusion:After using Ansys Workbench software to simulate and optimize the components,the strength and research efficiency of the product have been greatly improved.This research result also provided a theoretical basis for the subsequent design of manual fire alarm button pressure rods.
关键词
手动火灾报警按钮/有限元分析/结构优化
Key words
Manual alarm button/Finite element analysis/Structural optimization
万方数据