Improvement and validation of a physically based model for the shear and transverse crushing of orthotropic composites
Artikel i vetenskaplig tidskrift, 2019

This paper details a complete crush model for composite materials with focus on shear dominated crushing under a three-dimensional stress state. The damage evolution laws and final failure strain conditions are based on data extracted from shear experiments. The main advantages of the current model include the following: no need to measure the fracture toughness in shear and transverse compression, mesh objectivity without the need for a regular mesh and finite element characteristic length, a pressure dependency of the nonlinear shear response, accounting for load reversal and some orthotropic effects (making the model suitable for noncrimp fabric composites). The model is validated against a range of relevant experiments, namely a through-the-thickness compression specimen and a flat crush coupon with the fibres oriented at 45° and 90° to the load. Damage growth mechanisms, orientation of the fracture plane, nonlinear evolution of Poisson's ratio and energy absorption are accurately predicted.



damage mechanics

finite element analysis


Sergio Costa

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik


Thomas Bru


Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Robin Olsson


André Portugal

INOV Contacto Programme

Journal of Composite Materials

0021-9983 (ISSN) 1530-793X (eISSN)

Vol. 53 12 1681-1696


Geofysisk teknik

Teknisk mekanik

Kompositmaterial och -teknik



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