Articles论文64家电科技www.jdkjjournal.comVol.32023Issue422冰箱助吸器疲劳寿命的仿真与实验研究Simulationandexperimentalresearchonfatiguelifeofrefrigeratorsuctionassistingdevice代少猛韩丽丽张升刚DAIShaomengHANLiliZHANGShenggang海信冰箱有限公司山东青岛266000HisenseRefrigeratorCo.,Ltd.Qingdao266000摘要：冰箱助吸器能够有效助力关门，解决关门过程中门体出现悬停或关不严而产生漏冷的问题。冰箱助吸器在多次重复性开关门过程中，不断承受交变载荷的作用，助吸器可能会发生疲劳断裂，影响冰箱正常开关门。因此需要分析冰箱助吸器的疲劳寿命，使其满足可靠性要求。首先建立了助吸器三维静态结构仿真模型，计算了助吸器在开关门过程中的应变分布和变化趋势。然后实验测试了助吸器在开关门过程中的应变变化。在10万次的开关门实验测试过程中，助吸器在关门和开门过程中的应变曲线呈现对称分布，应变呈现先增大后减小的趋势。根据实验测试的应变数据校准仿真的应变值，为疲劳寿命计算提供准确的疲劳载荷。最后进行助吸器疲劳寿命计算，找出了最易发生疲劳断裂的位置，从而指导助吸器的可靠性设计。关键词：冰箱；助吸器；应变；疲劳Abstract:Therefrigeratorsuctionassistingdevicecaneffectivelyhelppeopleclosethedoor,whichsolvestheproblemofcoldleakagecausedbythedoorhoveringornotclosingtightlyduringthedoorclosingprocess.Intheprocessofrepeatedlyopeningandclosingthedooroftherefrigerator,thesuctionassistingdeviceisconstantlysubjectedtoalternatingloads.Thesuctionassistingdevicemaybefatiguedandfractured,whichaffectsthenormalopeningandclosingoftherefrigeratordoor.Therefore,itisnecessarytoanalyzethefatiguelifeoftherefrigeratorsuctionassistingdevicetomakeitmeetthereliabilityrequirements.Firstly,athree-dimensionalstaticstructuresimulationmodelofthesuctionassistingdeviceisestablished.Thedistributionandvariationtrendofthestrainofthesuctionassistingdeviceintheprocessofopeningandclosingtherefrigeratordoorarecalculated.Then,thevariationtrendofthestrainofthesuctionassistingdeviceduringtherefrigeratordooropeningandclosingprocessisexperimentallytested.Duringthe100000refrigeratordooropeningandclosingexperimentaltest,thestraincurveofthesuctionassistingdeviceint...
