Volume 19 No. 1
Apr.  2015
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Analysis on the Influence of Multi-Layered Media on Stress Wave Propagation

  • Corresponding author: DONG Yong-Xiang; 
  • Received Date: 2003-10-08
    Accepted Date: 2004-07-03
  • The influence of multi-layered media on stress wave propagation characteristics has been analysed by the low velocity impact experiments and the corresponding numerical simulation. It shows that the wave amplitude and the actuation time are both affected by foamed materials in the layered media, and the energy absorption of multi-layered media with the foamed materials is obvious. As a result, the energy and momentum of different layer are changed when stress wave propagates in the layered media. Comparing the media including foamed aluminium with the media including foamed concrete, it has been shown that foamed concrete can lead to the lower wave amplitude, but foamed aluminium can absorb the more energy than that of foamed concrete under the condition of low velocity impacts.
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    [2] Holmquist T J, Templeton D W, Bishnoi K D. Constitutive Modeling of Aluminum Nitride for Large Strain, High-Strain Rate, and High-Pressure Applications [J]. Int J Impact Eng, 2001, 25: 211-231.
    [3] Gupta Y M, Ding J L. Impact Load Spreading in Layered Materials and Structures: Concept and Quantitative Measure [J]. Int J Impact Eng, 2002, 27: 277-291.
    [4] Skvortsov V, Kepler J, Bozhevolnaya E. Energy Partition for Ballistic Penetration of Sandwich Panels [J]. Int J Impact Eng, 2003, 28: 697-716.
    [5] Yu J L, Wang X, Wei Z G, et al. Deformation and Failure Mechanism of Dynamically Loaded Sandwich Beams with Aluminum-Foam Core [J]. Int J Impact Eng, 2003, 28: 331-347.
    [6] Wada A, Kawasaki T, Minoda Y, et al. A Method to Measure Shearing Modulus of the Foamed Core for Sandwich Plates [J]. Composite Structures, 2003, 60: 385-390.
    [7] Li Q M, Meng H. Attenuation or Enhancement-A One-Dimensional Analysis on Shock Transmission in the Solid Phase of a Cellular Material [J]. Int J Impact Eng, 2002(27), 1049-1065.
    [8] Kearsleya E P, Wainwright P J. The Effect of Porosity on the Strength of Foamed Concrete [J]. Cement and Concrete Research, 2002, 32: 233-239.
    [9] Santosa S P, Wierzbicki T, Hanssen A H, et al. Experimental and Numerical Studies of Foam-Filled Sections [J]. Int J Impact Eng, 2000, 24: 509-534.
    [10] Pan Y, Hu S S, Wei Z G. Experimental Study on Dynamic Behavior of Foamed Aluminum [J]. Materials Science Engineering, 2002, 20(3): 341-343. (in Chinese)
    [11] 潘艺, 胡时胜, 魏志刚. 泡沫铝动态力学性能的实验研究 [J]. 材料科学与工程, 2002, 20(3): 341-343.
    [12] Deshpande V S, Fleck N A. High Strain Rate Compressive Behaviour of Aluminium Alloy Foams [J]. Int J Impact Eng, 2000, 24: 277-298.
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Analysis on the Influence of Multi-Layered Media on Stress Wave Propagation

    Corresponding author: DONG Yong-Xiang; 
  • 1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, CAS, Beijing 100080, China;
  • 2. Institute of Mechanics, CAS, Beijing 100080, China

Abstract: The influence of multi-layered media on stress wave propagation characteristics has been analysed by the low velocity impact experiments and the corresponding numerical simulation. It shows that the wave amplitude and the actuation time are both affected by foamed materials in the layered media, and the energy absorption of multi-layered media with the foamed materials is obvious. As a result, the energy and momentum of different layer are changed when stress wave propagates in the layered media. Comparing the media including foamed aluminium with the media including foamed concrete, it has been shown that foamed concrete can lead to the lower wave amplitude, but foamed aluminium can absorb the more energy than that of foamed concrete under the condition of low velocity impacts.

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