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Acta Mechanica Solida Sinica

, Volume 19, Issue 1, pp 69–74 | Cite as

Progressive fracture modeling of the failure wave in impacted glass

  • Guowen Yao
  • Zhanfang Liu
  • Peiyan Huang
Article

Abstract

The failure wave has been observed propagating in glass under impact loading since 1991. It is a continuous fracture zone which may be associated with the damage accumulation process during the propagation of shock waves. A progressive fracture model was proposed to describe the failure wave formation and propagation in shocked glass considering its heterogeneous meso-structures. The original and nucleated microcracks will expand along the pores and other defects with concomitant dilation when shock loading is below the Hugoniot Elastic Limit. The governing equation of the failure wave is characterized by inelastic bulk strain with material damage and fracture. And the inelastic bulk strain consists of dilatant strain from nucleation and expansion of microcracks and condensed strain from the collapse of the original pores. Numerical simulation of the free surface velocity was performed and found in good agreement with planar impact experiments on K9 glass at China Academy of Engineering Physics. And the longitudinal, lateral and shear stress histories upon the arrival of the failure wave were predicted, which present the diminished shear strength and lost spall strength in the failed layer.

Key words

the failure wave progressive fracture model glass planar impact 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2006

Authors and Affiliations

  1. 1.College of Civil Engineering and ArchitectureChongqing Jiaotong UniversityChongqingChina
  2. 2.Department of Engineering MechanicsChongqing UniversityChongqingChina
  3. 3.College of Traffic and CommunicationsSouth China University of TechnologyGuangzhouChina

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