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Progressive Damage of Unidirectional Composite Panels

Vladislav Las

Faculty of Applied Sciences, Department of Mechanics University of West Bohemia, Pilsen, Czech Republic, las{at}kme.zcu.cz

Robert Zemcík

Faculty of Applied Sciences, Department of Mechanics University of West Bohemia, Pilsen, Czech Republic

This work focuses on the numerical simulation of damage and fracture of unidirectional fiber-reinforced composite structures using the finite element method. A computational model is presented which can predict initial failure and is capable of the simulation of the subsequent process of local material damage up to final fracture. This procedure also known as progressive failure analysis originally combines Puck's failure criterion for the prediction of local failure and an innovative stiffness degradation approach for the simulation of resulting damage. The performance of the proposed model is demonstrated on examples of tensile tests of single-ply fiber-reinforced panels having different fiber orientations with and without stress concentrators. The numerical simulation is performed both as quasi-static and transient analysis and it involves identification and repetitive adjustment of material properties. The comparison of the results from experiment and from the simulation yields satisfactory agreement.

Key Words: fiber • composite • damage • progressive • failure • FEA • experiment.

Journal of Composite Materials, Vol. 42, No. 1, 25-44 (2008)
DOI: 10.1177/0021998307086187
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F.P. Van Der Meer and L.J. Sluys
Continuum Models for the Analysis of Progressive Failure in Composite Laminates
Journal of Composite Materials, September 1, 2009; 43(20): 2131 - 2156.
[Abstract] [PDF]