压剪载荷作用下TB6钛合金的动态力学性能

邹学韬 张晓晴 姚小虎

邹学韬, 张晓晴, 姚小虎. 压剪载荷作用下TB6钛合金的动态力学性能[J]. 高压物理学报, 2019, 33(2): 024206. doi: 10.11858/gywlxb.20190713
引用本文: 邹学韬, 张晓晴, 姚小虎. 压剪载荷作用下TB6钛合金的动态力学性能[J]. 高压物理学报, 2019, 33(2): 024206. doi: 10.11858/gywlxb.20190713
ZOU Xuetao, ZHANG Xiaoqing, YAO Xiaohu. Dynamic Behavior of TB6 Titanium Alloy under Shear-Compression Loading[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 024206. doi: 10.11858/gywlxb.20190713
Citation: ZOU Xuetao, ZHANG Xiaoqing, YAO Xiaohu. Dynamic Behavior of TB6 Titanium Alloy under Shear-Compression Loading[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 024206. doi: 10.11858/gywlxb.20190713

压剪载荷作用下TB6钛合金的动态力学性能

doi: 10.11858/gywlxb.20190713
基金项目: 国家自然科学基金(11672110, 11472110)
详细信息
    作者简介:

    邹学韬(1993-),男,硕士研究生,主要从事冲击动力学研究. E-mail: zouxt-scut@outlook.com

    通讯作者:

    姚小虎(1974-),男,博士,教授,主要从事爆炸与冲击动力学研究. E-mail: yaoxh@scut.edu.cn

  • 中图分类号: O347.3

Dynamic Behavior of TB6 Titanium Alloy under Shear-Compression Loading

  • 摘要: 钛合金以其轻质高强的优异力学性能被广泛应用于航空航天领域。使用Instron万能材料试验机和分离式霍普金森压杆,对TB6钛合金进行准静态和动态力学性能实验,得到了压缩、拉伸和压剪载荷作用下TB6钛合金的准静态和动态应力-应变曲线,构建了单轴压缩和纯剪切两种应力状态下的Johnson-Cook动态本构模型。结果表明,TB6钛合金的屈服应力表现出明显的拉压不对称性、应变率强化和热软化效应。使用拉压不对称因子,修正了von Mises屈服准则,修正的屈服准则可很好地预测TB6钛合金的准静态和动态屈服行为。

     

  • 图  压剪试件和帽型试件的应力状态

    Figure  1.  Stress of shear-compression and cap-type specimens

    图  试件应变云图

    Figure  2.  Nephograms of strain distribution in specimens

    图  准静态正应力-应变曲线

    Figure  3.  Quasi-static normal stress-strain curve

    图  准静态切应力-应变曲线

    Figure  4.  Quasi-static shear stress-strain curve

    图  SHPB实验典型波形

    Figure  5.  Typical waves of SHPB experiments

    图  SHPB动态压缩应力-应变曲线

    Figure  6.  Stress-strain curves of TB6 titanium alloy under SHPB dynamic compression

    图  绝热温升曲线

    Figure  7.  Time history of temperature rise during adiabatic process

    图  不同应变率下J-C模型预测与实验结果的比较

    Figure  8.  Stress-strain cures at different strain rates from experiments and J-C model fitting

    图  不同应变率下的初始屈服面

    Figure  9.  Initial yield surface at different strain rates

    图  10  应变率3500 s-1下的后继屈服面

    Figure  10.  Succeeding yield surface at strain rate of 3500 s-1

    表  1  J-C模型参数拟合结果

    Table  1.   Fitting results of J-C model parameters

    ConditionA/MPaB/MPanm
    Uniaxial compression939326.60.240.661 18
    Pure shear495 92.50.210.655 48
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-01-17
  • 修回日期:  2019-01-28

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