Damage degradation modelling for transverse cracking in composite laminates under low-velocity impact

This paper derives a damage evaluation law for fibres and an expression the parameter function. It also proposes approach to matrix degradation law. A proposed both constitutive model increment is developed predict intralaminar evolution in composite laminates. Failure envelopes different failure criteria are discussed term of fracture plane cracking under compressive load. The surface consistency condition applied derive plastic multiplier as function flow so that strain updated at each time stress–strain relationship will be updated. user-defined subroutine has been adopted implement model. effectiveness method examined low velocity impact. numerical findings confirm results obtained using suggested good agreement with experimental results.