锻压技术

十字形双轴试验在板料成形性能研究中的应用

英文标题：Application of cruciform biaxial tests in the research of sheet metal formability

作者：刘维褚兴荣韩坤

分类号：TG386

出版年,卷(期):页码：2016,41(3):1-8

摘要：

由于具有平面内加载、变形路径可实时控制等优点，十字形双轴试验已经广泛地应用于金属板料本构模型与成形极限的研究中。双轴试验设备与十字形试件设计是十字形双轴试验研究中的两大重点。目前，双轴试验仪器包括简易机械装置、静态双轴试验专用设备与动态双轴试验专用设备等；十字形试件的设计也采用了“圆角过渡”、“臂上开缝”或“中心区域减薄”等方式。通过十字形双轴试验的大量研究工作，成功地实现了金属板料各向异性屈服函数的验证、硬化模型的识别以及成形极限图的构建。

Due to the advantages of in-plane loading and deformation path on-line controlling, the cruciform biaxial test has been widely used to research the constitutive model and the forming limit of sheet metals. The biaxial testing apparatus and the cruciform specimen design are the two key issues. Up to date, the biaxial tensing apparatus includes the simple mechanical devices, static biaxial testing machines and dynamic biaxial testing machines, and the cruciform specimen design shows characteristics, such as notches at the intersections, slits in each arm and thickness reduction at the central zone. A large number of research work has been performed to successfully realize the validation of anisotropic yield functions identification of hardening models and determination of forming limit curves for sheet metals by the cruciform biaxial tests.

基金项目：

国家自然科学基金资助项目（51405266）；中央高校基本科研业务费专项资金资助(2016IVA001）；山东省自然科学基金资助项目（ZR2014EEP003）

刘维（1986-），男，博士，讲师通讯作者：褚兴荣（1983-），男，博士，讲师

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