锻压技术

基于有限元模拟以及理论计算的Zr基非晶合金热渐进成形工艺

英文标题：Hot incremental forming process of Zr-based amorphous alloys based on finite element simulation and theoretical calculation

作者：张嘉琪1 司明达1 李茂君2 莫健华3 陈立新3 卓军4 龚攀1 王新云1

单位：1. 华中科技大学材料科学与工程学院材料成形与模具技术全国重点实验室 2. 湖南大学整车先进设计制造技术全国重点实验室 3. 文华学院机械与电气工程学部 4. 上海萨斐技术测量有限公司

关键词：非晶合金热渐进成形本构方程成形力壁厚

分类号：TG316

出版年,卷(期):页码：2024,49(7):133-146

摘要：

为了对非晶合金热渐进成形过程中的工艺参数以及成形力进行研究，以Zr35Ti30Be27.5Cu7.5非晶合金板料为研究对象，在不同温度和应变速率条件下进行了拉伸实验并建立了本构方程，采用有限元软件ABAQUS，研究了温度、进给量和进给速率对非晶合金成形性能的影响，并对成形力进行了理论计算。结果表明：等效应力和成形力随着温度的升高而减小，随着进给量和进给速率的增大而增大；最小壁厚随着温度的升高而增大，随着进给量和进给速率的增大而减小。提取某一条件下的轴向力模拟数据，在同样条件下对成形力进行理论计算，通过对比发现，该成形力的理论计算模型具有极好的预测准确性，为渐进成形设备的设计和成形工艺及参数的选择提供了理论依据。

In order to investigate the process parameters and forming force during the hot incremental forming of amorphous alloys, the tensile tests were conducted under different temperatures and strain rates, and a constitutive equation was established for amorphous alloy Zr35Ti30Be27.5Cu7.5 sheet. The influences of temperature, feeding amount and feeding rate on the forming performance of amorphous alloy were studied by finite element software ABAQUS. Then, a theoretical calculation of the forming force was conducted. The results show that the equivalent stress and forming force decrease with the increasing of temperature increases and increase with the increasing of feeding amount and feeding rate. The minimum wall thickness increases with the increasing of temperature, but decreases with the increasing of feeding amount and feeding rate. Under a specific condition, the simulated data of axial force was extracted, and a theoretical calculation of the forming force was conducted under the same conditions. By comparison, it is found that the theoretical calculation model of the forming force has excellent predictive accuracy, providing a theoretical basis for the design of incremental forming equipment and the selection of forming processes and parameters.

基金项目：

国家自然科学基金面上项目（52371154）；湖南大学整车先进设计制造技术全国重点实验室开放基金项目（32215006）

作者简介：张嘉琪（2000-），女，硕士研究生 E-mail：m202271037@hust.edu.cn 通信作者：龚攀（1984-），男，博士，副教授 E-mail：gongpan126@126.com

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