| 薄壁异形环截面管材料环向动态拉伸特性测试 |
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| 引用本文： | 杨建波,李玉龙,索涛,宋保永. 薄壁异形环截面管材料环向动态拉伸特性测试[J]. 爆炸与冲击, 2011, 31(1): 95-100. DOI: 10.11883/1001-1455(2011)01-0095-06 |
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| 作者姓名： | 杨建波 李玉龙 索涛 宋保永 |
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| 作者单位： | 西北工业大学航空学院航空结构工程系,陕西,西安,710072;西北工业大学航空学院航空结构工程系,陕西,西安,710072;北京宇航系统工程研究所,北京,100076 |
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| 基金项目： | 国家自然科学基金项目，航空科学基金项目，西北工业大学"结构力学行为科学与技术"创新引智基地项目 |
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| 摘 要： | 针对薄壁异形环截面管状结构,结合有限元分析,提出了基于Hopkinson拉杆技术的环向材料动态拉伸实验方法;设计了特殊的夹具,采用空心透射杆提高透射波幅值;并对1Cr18Ni9Ti材料薄壁异形环截面管状结构进行不同应变率下的冲击拉伸实验。实验结果表明,该实验方法可适用于这种薄壁异形环截面管状结构,该结构具有良好的塑性变形能力,断裂应变随应变率的提高明显降低,拉伸强度随应变率的提高明显增大。
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| 关 键 词： | 固体力学 拉伸强度 动态拉伸 Hopkinson拉杆 异形环 空心透射杆 |
Study on a radial-direction dynamic tensile test method for a thin-walled tube structure with special ring section |
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| YANG Jian-bo,LI Yu-long,SUO Tao,SONG Bao-yong. Study on a radial-direction dynamic tensile test method for a thin-walled tube structure with special ring section[J]. Explosion and Shock Waves, 2011, 31(1): 95-100. DOI: 10.11883/1001-1455(2011)01-0095-06 |
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| Authors: | YANG Jian-bo LI Yu-long SUO Tao SONG Bao-yong |
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| Affiliation: | 1.SchoolofAeronautics,NorthwesternPolytechnicalUniversity,2.Xi’an710072,Shaanxi,China; |
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| Abstract: | Aimed at a thin-walled tube structure with special ring section,combined with finite element analysis,a radial-directional dynamic tensile experimental method was proposed based on conventional split Hopkinson tensile bar(SHTB).A special clamp was designed,and a hollow steel transimission bar was used to magnify the transmitted signals.For the 1Cr18Ni9Ti thin-walled tube structure,some dynamic tensile tests were implemented under different strain rates.The resulsts show that the experimental method is appli... |
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| Keywords: | solid mechanics tensile strength dynamic tensile Hopkinson tensile bar special ring hollow transmission bar |
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