According to the fatigue failure mechanism analysis,key components such as plastic tank,header,tube and sideplate are optimized for the leakage failure of aluminum-plastic tube fin radiator for heavy duty truck.The pressure resistance analysis and heat-structure coupling analysis of the radiator are carried out by finite element simulation,whose results show that under the action of alternating pressure load and alternating temperature load,the maximum deformation and maximum stress distribution of each part are consistent with the actual failure area,which verifies the accuracy of the finite element model and simulation analysis.Compared with the fatigue life curve of materials,the strain and stress of the optimized radiator are also smaller than the designed safety value.Pressure cycle test and thermal cycle test are carried out on the radiator prototypes,whose results meet the design requirements of the OEM factory.
关键词
铝塑管带式散热器/疲劳失效/有限元分析/压力脉冲/冷热循环
Key words
aluminum-plastic tube finradiator/fatigue failure/finite element analysis/pressure pulse/thermal cycle
维普
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