Proposition of a unified model to predict strength and fatigue lifetime of 3D woven composite structures with polymer matrix

Frédéric Laurin (1) , Myriam Kaminski (1) , Lise Angrand (2) , Rodrigue Desmorat (3)

1 DMAS, ONERA, Université Paris Saclay [Châtillon]
2 Safran Aircraft Engines
3 LMT - Laboratoire de mécanique et technologie

A unified damage and failure approach has been proposed to estimate the failure of 3D woven composite materials subjected to static and/or fatigue loadings. Indeed, the existing damage and failure approach developed by Onera for static loading has been extended in the present paper to predict the damage evolution during fatigue loading, even for multiaxial spectral loadings, using an incremental damage formalism. The fatigue lifetime predictions, the evolution of apparent modulus and S-N curves for different stress ratios, have been compared successfully with the available tests carried-out by Safran Group. Moreover, this unified approach has been implemented into a commercial finite element code and applied successfully to different composite structures subjected to fatigue loading.

Mots clés: 3D woven composite; Damage model; Fatigue lifetime; Finite element simulation

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]; Chimie

Frédéric Laurin, Myriam Kaminski, Lise Angrand, Rodrigue Desmorat. Proposition of a unified model to predict strength and fatigue lifetime of 3D woven composite structures with polymer matrix. ECCM18 – 18th European Conference on Composite Materials, Jun 2018, Athens, Greece. ⟨hal-03189092⟩