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Volume 27 Issue 5
Mar 2015
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Chinese Journal of High Pressure Physics  > 2013  >  27(5): 662-670.
XU Song-Lin, LIU Yong-Gui, WANG Dao-Rong, TAN Zi-Han, Zheng Hang. Dynamic Responses of Alumina Microvoid Ceramics with High Porosity under Combined Pressure and Shear Impact Loading[J]. Chinese Journal of High Pressure Physics, 2013, 27(5): 662-670. doi: 10.11858/gywlxb.2013.05.002
Citation: XU Song-Lin, LIU Yong-Gui, WANG Dao-Rong, TAN Zi-Han, Zheng Hang. Dynamic Responses of Alumina Microvoid Ceramics with High Porosity under Combined Pressure and Shear Impact Loading[J]. Chinese Journal of High Pressure Physics, 2013, 27(5): 662-670. doi: 10.11858/gywlxb.2013.05.002
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Dynamic Responses of Alumina Microvoid Ceramics with High Porosity under Combined Pressure and Shear Impact Loading

doi: 10.11858/gywlxb.2013.05.002
  • 1.

    CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China;

  • 2.

    National Key Laboratory of Science and Technology on Test Physics and Numerical Mathematical, Beijing 100076, China

  • Received Date: 10 Jun 2012
  • Rev Recd Date: 29 Aug 2012
  • Issue Publish Date: 15 Oct 2013
    Abstract
  • Based on one-stage light gas gun, series of experiments including oblique planar impact with inclination angles of 0~15 and impact velocity ranging from 68 to 201 m/s were carried out to investigate the responses of alumina microvoid ceramics with high porosity subjected to impact loading. Experimental results show that since the diameter of microvoid in sample is smaller than 5 m, the process of sample compression is gradually and evenly developed, and there is no porous collapse observed. The dynamic shear behaviors are similar to those of brittle materials. Based on the Hoek-Brown criteria and Cap-model, the dynamic model for the failure surface and the double yield surfaces of porous brittle materials was built. Based on the experimental data of compression and shear combined impact loading, the preliminary analyses were carried out and the results show the applicability of the model.

     

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