| 膨胀柱壳恒定应变率的本构关系 |
| |
| 引用本文： | 郭昭亮,任国武,张世文,汤铁钢,刘仓理.膨胀柱壳恒定应变率的本构关系[J].爆炸与冲击,2016,36(5):583-589. |
| |
| 作者姓名： | 郭昭亮 任国武 张世文 汤铁钢 刘仓理 |
| |
| 作者单位： | 中国工程物理研究院流体物理研究所,四川绵阳,621999;中国工程物理研究院,四川绵阳,621999 |
| |
| 基金项目： | 国家自然科学基金项目(11172279 |
| |
| 摘 要： | 考虑到金属柱壳膨胀过程中随机裂纹萌生对测试结果的可能干扰，设计了预置有中心穿透圆孔的柱壳样品，采用多普勒光纤探针测量系统获得了柱壳外壁更优的径向速度历史。基于膨胀柱壳实验中固有的非恒定应变率现象，研究了获得恒定应变率下本构方程的方法，并采用改进后的本构方程确定方法，获得了20钢恒定应变率下的应力应变关系。
|
| 关 键 词： | 固体力学 本构方程 多普勒光纤探针 膨胀柱壳 恒定应变率 |
| 收稿时间： | 2015-01-12 |
Constitutive equation of expanding cylindrical shell at constant strain rate |
| |
| Guo Zhaoliang,Ren Guowu,Zhang Shiwen,Tang Tiegang,Liu Cangli.Constitutive equation of expanding cylindrical shell at constant strain rate[J].Explosion and Shock Waves,2016,36(5):583-589. |
| |
| Authors: | Guo Zhaoliang Ren Guowu Zhang Shiwen Tang Tiegang Liu Cangli |
| |
| Institution: | 1.Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China2.China Academy of Engineering Physics, Mianyang 621999, Sichuan, China |
| |
| Abstract: | In this work, taking into account of the interference of random cracks in the expansion process, we designed a cylindrical sample made with a preset hole. Then, using the Doppler pins system (DPS), we obtained some better curves for the cylinder's radial speed histories. Based on the non-constant strain rate phenomena in the expanding ring and expanding cylinder experiments, we conducted experiments and studied a method for obtaining constitutive equation at constant strain rate. The improved constitutive equation method was used to obtain the modified constitutive equation at constant strain rate for 20 steel. |
| |
| Keywords: | solid mechanics constitutive equation Doppler pins system(DPS) expanding cylindrical shell constant strain rate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《爆炸与冲击》浏览原始摘要信息 |
| 点击此处可从《爆炸与冲击》下载免费的PDF全文 |
|
