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Chinese Journal of High Pressure Physics  > 2013  >  27(6): 856-862.
PAN Jian-Hua, CHEN Xue-Dong. Numerical Simulation of Dynamic Fracture Toughness Test Using Three-Point Bending Specimen in SHPB[J]. Chinese Journal of High Pressure Physics, 2013, 27(6): 856-862. doi: 10.11858/gywlxb.2013.06.010
Citation: PAN Jian-Hua, CHEN Xue-Dong. Numerical Simulation of Dynamic Fracture Toughness Test Using Three-Point Bending Specimen in SHPB[J]. Chinese Journal of High Pressure Physics, 2013, 27(6): 856-862. doi: 10.11858/gywlxb.2013.06.010
shu

Numerical Simulation of Dynamic Fracture Toughness Test Using Three-Point Bending Specimen in SHPB

doi: 10.11858/gywlxb.2013.06.010
  • 1.

    National Technology Research Center on Pressure Vessel and Pipeline Safety Engineering, Hefei general Machinery Research Institute, Hefei 230031, China;

  • 2.

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

  • Received Date: 20 Dec 2011
  • Rev Recd Date: 30 Mar 2012
  • Publish Date: 15 Dec 2013
    Abstract
  • This paper examines 3D and 2D numerical simulations of dynamic fracture toughness test using TPB specimen in SHPB by using commercial code ABAQUS 6.8 and 3D fracture mechanics code ZENCRACK 7.7. The finite element model includes the whole experimental device (the projectile, the input bar, the specimen and the supporting device). Three cases of specimens with different initial crack length impacted by projectiles were simulated, and dynamic stress intensity factor impulse response curves were obtained. The dynamic initial fracture times, tf, were extracted from RKR local stress fracture criterion. The material dynamic fracture toughness are successfully obtained from numerical simulations. The simulated results from 2D and 3D FEM are compared with benchmark tests, finding that 3D finite element results are better than 2D results.

     

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