Influence of the pre-stress on the stability of elastic grid shells

Romain Mesnil (1) , John Ochsendorf (1) , Cyril Douthe (2)

1 MIT - Massachusetts Institute of Technology
2 IFSTTAR/MAST/EMMS - Expérimentation et Modélisation des Matériaux et des Structures

The paper presents some results on the influence of the pre-stress induced by the erection method in elastic grid shells on their buckling capacity. The numerical methods have been validated with the study of a pre-buckled arch. A form-finding scheme using low-speed dynamics has been employed to generate automatically a family of elastic grid shells. Their buckling capacity has been compared to the one of grid shells with the exact same geometry, but without any pre-stress. The paper demonstrates that the pre-stress decreases the buckling capacity of elastic grid shells. Low-speed dynamics, elastic grid shell, lightweight structures, buckling analysis

Mots clés: ELASTICITE; FLAMBEMENT

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Romain Mesnil, John Ochsendorf, Cyril Douthe. Influence of the pre-stress on the stability of elastic grid shells. IASS 2013 Symposium, Sep 2013, Poland. 5p. ⟨hal-00938315⟩