摘要
为深入了解B340LA低碳合金钢、B1500HS冷轧钢以及B340LA/B1500HS高强钢拼焊板等飞机制造常用钢材的热变形特性,提升相关企业对于高强度钢的加工能力,对各种高强度钢板料进行拉伸试验,进而获得板料的应力-应变关系数据。在此基础上,采用经过改进的Johnson-Cook模型对板料的应力-应变关系数据进行拟合处理,取得了较为理想的拟合效果,决定系数R 2接近于1,代表该模型的拟合结果具有良好的可信度。最后基于所得到的拟合结果建立了B340LA低碳合金钢、B1500HS冷轧钢以及B340LA/B1500HS高强钢拼焊板三种高强度钢板料的本构模型。
In order to understand the thermal deformation characteristics of B340LA low-carbon alloy steel,B1500HS cold-rolled steel and B340LA/B1500HS high-strength steel tailored blank and other commonly used steels in aircraft manufacturing,and improve the processing capacity of related enterprises for high-strength steel.The tensile test of various high-strength steel sheets was carried out to obtain the stress-strain relationship data of the sheets.On this basis,the improved Johnson-Cook model is used to fit the stress-strain relationship data of the sheet,and an ideal fitting effect is obtained,and the coefficient of determination R 2 is close to 1,which means that the fitting results of the model have good reliability.Finally,based on the fitting results,the constitutive models of three high-strength steel sheets,namely B340LA low-carbon alloy steel,B1500HS cold-rolled steel and B340LA/B1500HS high-strength steel tailored blank,were established.
作者
赵凯
ZHAO Kai(Xi'an Aeronautical Polytechnic Institute,Xi'an 710089,Shaanxi,China)
出处
《模具技术》
2024年第6期73-79,共7页
Die and Mould Technology
基金
2023年度陕西省教育厅科研计划项目“航空发动机涡轮叶片热障涂层气膜孔光整”(编号:23JP076)。
关键词
高强度钢
拉伸试验
拟合关系
本构模型
high strength rigidity
tensile test
fitting relationship
constitutive model
