Predicting failure load of a non-crimp fabric composite by means of a 3D finite element model including progressive damage

摘要: Abstract A mesoscopic scale 3D finite element model of its representative unit cell is used to study the progressive damage a [0,90]n non-crimp fabric laminate under compressive loading. The tows have been generated with straight mesh, and out-of-plane fibre crimp has incorporated into by defining mechanical properties each according actual direction fibres. material degradation (MPDG) method evolution. Non-interactive criteria (Maximum Stress Maximum Strain), interactive (Hashin Puck), associated failure modes, employed determine onset at tows. throughout cell, from load which initiated, until predicted, analysed. mechanism responsible for also identified. numerical predictions stress strain, considered criteria, are discussed compared experimental data obtained direct compression tests on biaxial cross-ply NCF laminates. satisfactory agreement between stress, strain as well stress-strain curves MPDG when using Stress, Hashin’s or Puck’s criteria.