A numerical study on the impact resistance of composite shells using an energy based failure model

• Published in: Composite structures Vol. 93; no. 1; pp. 142 - 152
• Main Authors: Yokoyama, N.O., Donadon, M.V., de Almeida, S.F.M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.12.2010; Elsevier
• Subjects: Composite structures; Composites; Curvature; Damage; Damage mechanics; Energy use; Exact sciences and technology; Failure; Finite element method; Finite elements; Fracture mechanics; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); Impact; Mathematical analysis; Mathematical models; Physics; Shells; Solid mechanics; Structural and continuum mechanics; Damage mechanics; Impact; Finite elements; Composites; Fracture mechanics; Energy method; Stratified material; Rupture; Experimental study; Modeling; Composite material; Finite element method; Pressure effect; Curvature; Damaging; Crack
• ISSN: 0263-8223; 1879-1085
• DOI: 10.1016/j.compstruct.2010.06.006

This paper presents a numerical study on the impact resistance of composite shells laminates using an energy based failure model. The damage model formulation is based on a methodology that combines stress based, continuum damage mechanics (CDM) and fracture mechanics approaches within a unified procedure by using a smeared cracking formulation. The damage model has been implemented as a user-defined material model in ABAQUS FE code within shell elements. Experimental results obtained from previous works were used to validate the damage model. Finite element models were developed in order to investigate the pressure and curvature effects on the impact response of laminated composite shells.