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力约束管材自由胀形试验研究与材料性能测试

程鹏志 郎利辉 葛宇龙 阮尚文 王韬 武海

程鹏志, 郎利辉, 葛宇龙, 等 . 力约束管材自由胀形试验研究与材料性能测试[J]. 北京航空航天大学学报, 2015, 41(4): 686-692. doi: 10.13700/j.bh.1001-5965.2014.0603
引用本文: 程鹏志, 郎利辉, 葛宇龙, 等 . 力约束管材自由胀形试验研究与材料性能测试[J]. 北京航空航天大学学报, 2015, 41(4): 686-692. doi: 10.13700/j.bh.1001-5965.2014.0603
CHENG Pengzhi, LANG Lihui, GE Yulong, et al. Tube free bulging experiment with force-end and material properties testing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 686-692. doi: 10.13700/j.bh.1001-5965.2014.0603(in Chinese)
Citation: CHENG Pengzhi, LANG Lihui, GE Yulong, et al. Tube free bulging experiment with force-end and material properties testing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 686-692. doi: 10.13700/j.bh.1001-5965.2014.0603(in Chinese)

力约束管材自由胀形试验研究与材料性能测试

doi: 10.13700/j.bh.1001-5965.2014.0603
基金项目: 国家“973”计划资助项目( 613152); 国家自然科学基金国际(地区)合作与交流资助项目(51111120088)
详细信息
    作者简介:

    程鹏志(1985—),男,河北石家庄人,博士生,pengzhi80h@163.com

    通讯作者:

    郎利辉(1970—),男,河南新乡人,教授,lang@buaa.edu.cn,主要研究方向为先进成形技术及装备.

  • 中图分类号: V261.2+8

Tube free bulging experiment with force-end and material properties testing

  • 摘要: 相较于单向拉伸试验,通过管材胀形试验(TBT,Tube Bulging Test)获得的材料性能参数能够更准确地反映材料在高压流体作用下的塑性成形性能,不同的管端边界将会严重影响管材胀形试验的测试结果.针对国际上现有试验方法和设备存在的不足,研制出了一套约束边界清晰、加载精确的管材自由胀形试验系统.在管材测试过程中,基于位移随动力主动加载的控制策略和比例伺服油缸,实现实时的轴向力、轴向位移和内压力的精确加载.端部约束的测试管材通过特殊设计的工装保证了其轴向自由滑动.实时内压力和胀形管材顶点处材料的壁厚和胀形高度信息通过超高压压力传感器、超声测厚仪和磁致伸缩位移传感器采集,进而基于Swift材料本构模型和采集到的数据拟合出材料应力应变曲线和材料性能参数.试验结果表明,管材两端侧推力与内压力对管材内腔端面的作用力和管材轴向自由对称收缩的平衡条件始终处于动态稳定中,试验设备能够准确获得实时胀形高度、顶点厚度、轴向收缩长度和内压力的信息,能够为材料性能测试和工艺设计提供可信的材料参数.

     

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出版历程
  • 收稿日期:  2014-09-28
  • 修回日期:  2014-11-19
  • 刊出日期:  2015-04-20

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