Progressive failure numerical simulation and experimental verification of carbon-fiber composite corrugated beams under dynamic impact
作者： Haibo Luo , Ying Yan , Taihua Zhang , Zeqing He , Sheng Wang
DOI: 10.1016/J.POLYMERTESTING.2017.08.004
关键词:
摘要: Abstract To explore the axial impact energy absorption capacity of bidirectional carbon pre-impregnated (prepreg) composite corrugated beams, a solid 3D finite element model with different trigger mechanism settings and ply designs was established. Numerical simulation dynamic performed on model. An in-plane damage considering shear failure created based continuum mechanics Hashin's criteria, stiffness degradation for G803/5224 is proposed. The cohesive zone used bilinear traction-separation constitutive considered to simulate inter-laminar delamination failure, thereby accurately reflecting anisotropic progressive characteristics carbon-fiber prepreg beams. results show that occur under loading energy-absorbing load-displacement curve specific were obtained through simulation. Simulation validated by comparison test results. With maximum relative error its average crushing load less than 11%, morphology beam has improved in uniformity. Furthermore, validity models been validated.
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