TA1薄壁管约束压缩为鼓包的变形行为研究  

Study on the Deformation Behavior of TA1 Thin-walled Tube into Bulge by Constrained Compression

作　　者：莫宁宁 冯治国[1,2] 陶亮[1] 江玉莲[1] 刘勇 MO Ningning;FENG Zhiguo;TAO Liang;JIANG Yulian;LIU Yong(College of Mechanical Engineering,Guizhou University,Guiyang 550025,China;Guizhou Key Laboratory of Special Equipment and Manufacturing Technology,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学机械工程学院,贵阳550025 [2]贵州大学贵州省特色装备及制造技术重点实验室,贵阳550025

出　　处：《材料导报》2025年第10期197-205,共9页Materials Reports

基　　金：国家自然科学基金(52165042);贵州科学技术基金重点项目(黔科合基础[2020]1Z049);贵州省优秀青年人才项目(黔科合平台人才[2021]5617号);贵阳市科技人才培养项目(筑科合同[2021]43-1号);贵州省科技计划项目(黔科合支撑[2023]一般308);贵大人基合字(2022)09号;贵州省研究生教育创新计划项目(2024YJSKYJJ033)。

摘　　要：TA1钛合金薄壁管的塑性变形直接影响鼓包成形质量。在不考虑温度对TA1流动应力的影响下,基于DEFORM进行二次开发,建立了TA1薄壁管的轴向约束压缩数值模型。通过仿真和实验分析了TA1薄壁管压缩为鼓包的变形行为,探讨了约束体厚度H、模具行程S、约束体孔径D以及模具速度V对薄壁管径向流动行为的影响。所开展的仿真与实验得出的鼓包区域形状尺寸相对误差在9.7%内,验证了TA1薄壁管的轴向约束压缩模型在描述材料的流动行为方面的准确性。鼓包的C1区域变形程度最大,金属流线最密集,应力集中和硬化现象最明显。各因素对鼓包直径的影响程度排序为H>D>S>V。The plastic deformation of a TA1 titanium alloy thin-walled tube directly affects the quality of bulging forming.Without considering the influence of temperature on the flow stress of TA1,a numerical model for axial constrained compression of TA1 thin-walled tube was established through secondary development of DEFORM.The behavior of compressing TA1 thin-walled tube into bulges was analyzed through simulation and experiments.The influence of the binding object height H,die stroke S,binding object hole diameter D,and die velocity V on the radial flow behavior of the thin-walled tube was analyzed.The results indicate that the relative error of dimensions describing shape of the bulge area is within 9.7%,which verifies that the axially constrained compression model of TA1 thin-walled tube can describe the flow behavior of the material accurately.The C1 region of the bulge has the largest degree of deformation,the densest metal flow lines,and the most obvious stress concentration and hardening phenomenon.The effects of the aforementioned four parameters on the bulge diameter can be sequenced as H>D>S>V.

关 键 词：DEFORM二次开发 TA1 薄壁管 鼓包 本构 

分 类 号：TG146[一般工业技术—材料科学与工程]