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Understanding and Interpreting of the Measured Wave Signals in Impact Dynamics Studies
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Li-Li WANG1, 2, Jue ZHU1, Hua-Wei LAI1, 3
Chinese Journal of High Pressure Physics | 2010, 24(4) : 279 - 285
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Chinese Journal of High Pressure Physics | 2010, 24(4): 279-285
Understanding and Interpreting of the Measured Wave Signals in Impact Dynamics Studies
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Li-Li WANG1, 2, Jue ZHU1, Hua-Wei LAI1, 3
Affiliations
  • 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 andHydropower College, Hangzhou 310018, China
Published: 2010-08-15
Outline
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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 (n≥3) 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
王礼立, 朱珏, 赖华伟. 冲击动力学研究中实测波信息的解读分析. 高压物理学报, 2010 , 24 (4) : 279 -285 .
Li-Li WANG, Jue ZHU, Hua-Wei LAI. Understanding and Interpreting of the Measured Wave Signals in Impact Dynamics Studies[J]. Chinese Journal of High Pressure Physics, 2010 , 24 (4) : 279 -285 .
Appendix
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Year 2010 volume 24 Issue 4
17
4
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Article Info
  • Receive Date：2007-08-12
  • Online Date：2026-11-02
  • Published：2010-08-15
Article Data
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History
  • Received：2007-08-12
  • Revised：2007-10-24
Funding
Affiliations
    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 andHydropower College, Hangzhou 310018, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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