The lightweight design of diaphragm pump base structure has an important impact on the processing and production of diaphragm pump.Based on the research of the frame structure of a certain type of diaphragm pump

the equivalent model was established for the actual working environment and the finite element analysis was carried out.The design variables were defined according to analysis results to improve the calculation efficiency.The uniform test design method was adopted for the test design

and the relationship between the design variables and the stress and deformation was calculated through simulation fitting.The lightweight optimization mathematical model was established for the diaphragm pump base structure by using the multi-objective optimization algorithm.On the premise of meeting the performance requirements

some materials were reasonably configured

and the stress

deformation and natural frequency of the diaphragm pump base structure were as small as possible.The frame structure after the lightweight optimization design was simulated and analyzed

and compared with the structure before optimization.The results show that the structural properties of the engine base remain unchanged after lightweight

and the weight is reduced from 25372 kg to 24582 kg

with a weight reduction of 790 kg.The weight reduction effect is good

the maximum stress value is reduced by 45.1%

and the maximum deformation is reduced by 12.3%.The optimization effect is remarkable

which provides a basic support for the finite element analysis and lightweight optimization design of the new diaphragm pump structure.