冲击动力学研究中实测波信息的解读分析

王礼立; 朱珏; 赖华伟

doi:10.11858/gywlxb.2010.04.007

冲击动力学研究中实测波信息的解读分析

doi: 10.11858/gywlxb.2010.04.007

王礼立^1,2,,
朱珏¹,
赖华伟^1,3

1.
宁波大学力学和材料科学研究中心，浙江宁波 315211；
2.
爆炸科学与技术国家重点实验室，北京 100081；
3.
浙江水电水利高等专科学校土木系，浙江杭州 310018

详细信息

通讯作者:
王礼立

计量
- 文章访问数: 7402
- HTML全文浏览量: 385
- PDF下载量: 732
出版历程
- 收稿日期: 2007-08-12
- 修回日期: 2007-10-24
- 发布日期: 2010-08-15

Understanding and Interpreting of the Measured Wave Signals in Impact Dynamics Studies

WANG Li-Li^{1,2
,},
ZHU Jue¹,
LAI Hua-Wei^1,3

1.
1. Mechanics & Materials Science Research Center, Ningbo University, Ningbo 315211, China;

2.
State Key Laboratory for Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;

3.
Department of Civil Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China

More Information

Corresponding author: WANG Li-Li

摘要

摘要: 分析了多点测量技术在解读和分析实测冲击波信息时的重要性和难点，提出了将Lagrange多点测量反分析与Hopkinson压杆技术相结合的新方法，解决了在同一个Lagrange位置上难以同时测量应力和质点速度波形的难题，对试样上不同Lagrange位置处实测质点速度波形进行了解读分析，由n个实测质点速度波形信息得到了各Lagrange位置处的动态应力-应变关系。以有机玻璃和水泥砂浆两种粘弹性试样为例，进行了数值计算，验证了该方法的可行性和有效性。
- 冲击动力学 /
- 多点测量 /
- Lagrange分析 /
- Hopkinson压杆技术 /
- 动态应力-应变关系
Abstract: The significance and difficulty of the multi-position measuring were analyzed when understanding and interpreting the wave signals measured in impact dynamic experiments. By combining the Lagrange inverse analysis with the Hopkinson pressure bar technique, a new method was proposed, which substantially resolves the problem of measuring simultaneously both stress wave and particle velocity at a Lagrange position in impact tests. When the particle velocity wave signals at n (n3) Lagrange positions are measured, by using this new method, the dynamic stress-strain curves at n Lagrange positions of specimen can be determined and interpreted. The feasibility and validity of this new method was consistently confirmed by numerical tests for two viscoelastic materials (PMMA and cement mortar).
- impact dynamics /
- multi-position measurement /
- Lagrange analysis /
- Hopkinson pressure bar technique /
- dynamic stress-strain relationship

HTML全文

参考文献(14)

Wang L L. Foundation of Stress Waves [M]. 2nd ed. Beijing: National Defence Industry Press, 2005. (in Chinese)

王礼立. 应力波基础 [M]. 第2版. 北京: 国防工业出版社, 2005.

Wang L L, Wang Y G. The Important Role of Stress Waves in the Study on Dynamic Constitutive Behavior of Materials by SHPB [J]. Explosion and Shock Waves, 2005, 25(1): 17-25. (in Chinese)

王礼立, 王永刚. 应力波在用SHPB研究材料动态本构特性中的重要作用 [J]. 爆炸与冲击, 2005, 25(1): 17-25.

Xu S L, Tang Z P, Hu X J, et al. Experimental Investigation on Dynamic Properties of the Polypropylene Micro-Fiber Reinforced Cement (FCEM) under Impact Load [J]. Explosion and Shock Waves, 2004, 24(3): 251-260. (in Chinese)

徐松林, 唐志平, 胡晓军, 等. 聚丙烯短微纤维增强水泥冲击特性研究 [J]. 爆炸与冲击, 2004, 24(3): 251-260.

Fowles R. Conservation Relations for Spherical and Cylindrical Stress Waves [J]. J Appl Phys, 1970, 41: 2740-2741.

Cowperthwaite M, Williams R F. Determination of Constitutive Relationships with Multiple Gauges in Nondivergent Waves [J]. J Appl Phys, 1971, 42: 456-462.

Seaman L. Lagrangian Analysis for Multiple Stress or Velocity Gages in Attenuating Waves [J]. J Appl Phys, 1974, 45: 4303-4314.

Wang L L, Yang L M. A Class of Nonlinear Viscoelastic Constitutive Relation of Solid Polymeric Materials [M]//Wang L L, Yu T X, Li Y C. Progress in Impact Dynamics. Hefei: University of Science and Technology of China Press, 1992: 88-116. (in Chinese)

王礼立, 杨黎明. 固体高分子材料非线性粘弹性本构关系 [M]//王礼立, 余同希, 李永池. 冲击动力学进展. 合肥: 中国科技大学出版社, 1992: 88-116.

Wang L L, Shi S Q, Chen J Y, et al. Influences of Strain-Rate and Stress-State on Dynamic Response of Cement Mortar [J]. Int J Struct Stab Dyn, 2003, 3(3): 419-433.

Zhu J. On SHPB Technique and Lagrangian Analysis Used for Studying the Impact Response of Concrete-Like Materials [D]. Hefei: University of Science and Technology of China, 2006. (in Chinese)

朱珏. 混凝土类材料冲击本构特性的SHPB技术及Lagrange反解法的研究 [D]. 合肥: 中国科学技术大学, 2006.

施引文献

资源附件(0)

访问统计