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Energy release rate analysis of laminated structures based on Layerwise theory

QING Guang-hui,SONG Wan-ping   

  1. (College of Aeronautical Engineering,CAUC,Tianjin 300300,China)
  • Received:2014-05-10 Revised:2014-05-29 Online:2015-08-22 Published:2015-09-24

Abstract:

Based on Layerwise theory,analyzing formulae of energy release rate at delamination front of composite laminated structures are derived and the in-plane stresses of composite laminated beams are calculated. Then the energy release rate at the delamination front is calculated by introducing virtual spring layer model into the delamination interface and adopting the VCCT technology. Results show that the present method of interlaminar crack problem has higher accuracy and efficiency than traditional ones.

Key words: Layerwise, VCCT, springlayer model, energy release rate

CLC Number: