基于Drucker-Prager/Cap模型的Ti-30Cu粉末轧制过程模拟  

Simulation of Ti-30Cu Powder Rolling Process Based on Drucker-Prager/Cap Model

作　　者：孙振振 彭文飞(导师)[1,2] MOLIAR Oleksandr 李贺 邵熠羽 SUN Zhenzhen;PENG Wenfei;MOLIAR Oleksandr;LI He;SHAO Yiyu(School of Mechanical Engineering and Mechanics,Ningbo University,Ningbo 315211,China;Zhejiang Key Laboratory of Parts Rolling Forming Technology,Ningbo 315211,China)

机构地区：[1]宁波大学机械工程与力学学院,宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,宁波315211

出　　处：《机械工程材料》2023年第3期92-97,102,共7页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(52075272,52205386);省属高校基本科研战略引导项目(SJLZ2021002);宁波市科技创新2025重大专项项目(2019B10100,2021Z099)。

摘　　要：对钛和铜质量比为7∶3的Ti-30Cu混合粉末进行单轴压缩、巴西圆盘和模压试验,获得该粉末Drucker-Prager/Cap本构参数与相对密度的关系;利用Abaqus软件建立粉末轧制模型,研究喂料高度对板料相对密度的影响,并进行了试验验证;采用该模型研究了辊缝宽度、轧速对Ti-30Cu合金板料相对密度的影响。结果表明:在辊缝宽度为1 mm、轧速为10 mm·s^(-1)条件下,随着喂料高度由150 mm增加到300 mm,板料的相对密度增大,模拟结果与试验结果基本吻合,最大相对误差为2.15%,验证了轧制模型的有效性;随着喂料高度的增加、辊缝宽度或轧速的减小,板料的相对密度增大。The relationship between Drucker-Prager/Cap constitutive parameters and the relative density of Ti-30Cu mixed powder with a mass ratio of titanium to copper of 7∶3 was obtained by uniaxial compression,Brazilian disk and molding tests.A powder rolling model was established by Abaqus software to study the effect of feeding height on the relative density of sheet,and the test verification was carried out.The effect of the roll gap width and rolling speed on the relative density of Ti-30Cu alloy sheet was studied by this model.The results show that under the roll gap width of 1 mm and roll speed of 10 mm·s^(-1),the relative density of the sheet increased with increasing feed height from 150 mm to 300 mm.The simulation was basically consistent with the test result,and the maximum relative error was 2.15%,which verified the effectiveness of the rolling model.With increasing feeding height,and decreasing roll gap width or rolling speed,the relative density of the sheet increased.

关 键 词：Ti-30Cu粉末 Drucker-Prager/Cap本构模型 粉末轧制模型 相对密度 

分 类 号：TG142.71[一般工业技术—材料科学与工程]