第48卷第3期Vol.48No.3FORGING&STAMPINGTECHNOLOGY2023年3月Mar.2023基于DIC技术的5083铝合金成形极限研究杨英杰1,2,史立秋2,3,侯波2,3,丁明明2,3(1.宁夏大学机械工程学院,宁夏银川750000;2.浙江水利水电学院机械与汽车工程学院,浙江杭州310000;3.先进水利装备浙江省工程研究中心,浙江省农村水利水电资源配置与调控关键技术重点实验室,浙江杭州310000)摘要:5083铝合金板材的成形极限测定不仅精确度低而且实验过程复杂、成本较高,为了更加准确地得出5083铝合金材料的成形极限并降低结果成本,利用数字图像相关法技术和Nakajima实验对5083铝合金的成形极限进行研究。将5083铝合金材料做成不同尺寸的板材以改变其受力状态,并模拟材料实际所受的单向拉伸、平面应变和等双拉3种受力状态。利用应变率准则对5083铝合金材料的实验数据进行处理,得到实验条件下的5083铝合金的成形极限曲线。为方便快捷地预测出5083铝合金材料的成形极限,建立了5083铝合金成形极限的数学模型,将模型预测结果与实验结果具有很高的重合度,为预测5083铝合金的成形极限提供了较好的依据。关键词:5083铝合金;成形极限;数字图像相关法;单向拉伸;平面应变;等双拉DOI:10.13330/j.issn.1000-3940.2023.03.010中图分类号:TH142.2文献标志码:A文章编号:1000-3940(2023)03-0075-05Researchonforminglimitson5083aluminumalloybasedonDICtechnologyYangYingjie1,2,ShiLiqiu2,3,HouBo2,3,DingMingming2,3(1.SchoolofMechanicalEngineering,NingxiaUniversity,Yinchuan750000,China;2.SchoolofMechanicalandAutomotiveEngineering,ZhejiangUniversityofWaterResourcesandHydropower,Hangzhou310000,China;3.ZhejiangKeyLaboratoryofKeyTechnologiesforRuralWaterConservancyandHydropowerResourceAllocationandRegulation,AdvancedWaterConservancyEquipment,ZhejiangEngineeringResearchCenter,Hangzhou310000,China)Abstract:Theforminglimitdeterminationof5083aluminumalloysheetisnotonlylowinaccuracybutalsocomplicatedintheexperi-mentalprocessandhighincost.Therefore,inordertoobtaintheforminglimitof5083aluminumalloymaterialmoreaccuratelyandre-ducethecostofresult,theforminglimitof5083aluminumalloywasinvestigatedbyusingdigitalimagecorrelationmethodtechnologyandNakajimaexperiment,andthe5083aluminumalloymaterialwasmadeintosheetswithdifferentsizetochangethest...
