| GH2132高温高应变率下力学性能分析与Johnson-Cook本构模型的建立 |
| |
| 引用本文： | 田宪华,闫奎呈,赵军,王情情,王延庆,陈笑然. GH2132高温高应变率下力学性能分析与Johnson-Cook本构模型的建立[J]. 中国机械工程, 2022, 33(7): 872-881. DOI: 10.3969/j.issn.1004-132X.2022.07.015 |
| |
| 作者姓名： | 田宪华 闫奎呈 赵军 王情情 王延庆 陈笑然 |
| |
| 作者单位： | 1.中国矿业大学机电工程学院,徐州，2211162.中国矿业大学江苏省矿山机电设备重点实验室，徐州，2211163.山东大学机械工程学院，济南，2500614.中国矿业大学材料与物理学院,徐州，221116 |
| |
| 基金项目： | 国家自然科学基金(51805534)；中国博士后科学基金(2021M703501，2019M661976) |
| |
| 摘 要： | 对铁基高温合金GH2132进行了准静态压缩试验和分离式霍普金森压杆(SHPB)试验,获得了该材料在不同温度和应变率下的应力应变曲线,分析了其力学行为.GH2132在准静态压缩过程中出现加工硬化且没有明显的屈服阶段.在SHPB试验中,GH2132有明显的温度软化效应,当应变率在4000～8000 s-1之间时表现出应变率...
|
| 关 键 词： | 铁基高温合金 准静态 分离式霍普金森压杆 本构模型 |
Properties at Elevated Temperature and High Strain Rate and Establishment of Johnson-Cook Constitutive Model for GH2132 |
| |
| TIAN Xianhua,YAN Kuicheng,ZHAO Jun,WANG Qingqing,WANG Yanqing,CHEN Xiaoran. Properties at Elevated Temperature and High Strain Rate and Establishment of Johnson-Cook Constitutive Model for GH2132[J]. China Mechanical Engineering, 2022, 33(7): 872-881. DOI: 10.3969/j.issn.1004-132X.2022.07.015 |
| |
| Authors: | TIAN Xianhua YAN Kuicheng ZHAO Jun WANG Qingqing WANG Yanqing CHEN Xiaoran |
| |
| Affiliation: | 1.School of Mechatronic Engineering,China University of Mining and Technology,Xuzhou,Jiangsu,2211162.Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment,China University of Mining and Technology,Xuzhou,Jiangsu,2211163.School of Mechanical Engineering,Shandong University,Jinan,2500614.School of Material and Physics,China University of Mining and Technology,Xuzhou,Jiangsu,221116 |
| |
| Abstract: | Quasi-static compression tests and SHPB tests were carried out on superalloy GH2132, and the stress-strain curves of the materials at different temperatures and strain rates were obtained, and then the mechanics behavior were analyzed. GH2132 has a work hardening and unconspicuous yield stage in quasi-static compression processes. During the SHPB tests, GH2132 shows significant temperature strengthening effectiveness as the strain rate is between 4000 s-1 and 8000 s-1, while the material exhibits strain rate softening effectivenes as the strain rate is between 8000 s-1 and 10 000 s-1, and strain rate softening effectivenes is shown. By modifying temperature softening coefficient and strain rate strengthening parameter, the Johnson-Cook constitutive model of GH2132 with high temperature and high strain rate was established. |
| |
| Keywords: | iron-based superalloy quasi-static split Hopkinson pressure bars(SHPB) constitutive model |
|
| 点击此处可从《中国机械工程》浏览原始摘要信息 |
|
点击此处可从《中国机械工程》下载免费的PDF全文 |
|
