Use of Aerospace Fasteners in Mechanical and Structural Applications

Hugh Magma lockUn article paru dans «  Annals of Materials Science & Engineering« , publié sur www.austinpublishinggroup.com

Abstract. The intention of the present short review is to introduce to the non-specialist reader the feasibility of the use of alternative materials not generally considered by engineers working in mechanical and structural applications. That is, the use of specialised aerospace rivets in the more general area of construction is considered. To this end, the text briefly overviews the different types of fasteners used in the construction industry and their common mechanisms of failure.

Une proportion importante des défaillances mécaniques sont liées à des problèmes d’assemblage. Vissage, soudage, rivetage, collage… aucun type n’est épargné.

Le Cetim traite pour sa part, plus d’une centaine de cas d’analyses de défaillance liés à cette problématique par an.

Erreurs de conception, problèmes de procédés ou de mise en œuvre d’assemblage, défauts de matière, sont autant de pistes à explorer pour identifier et localiser les origines du problème. Des solutions correctives et pérennes appropriées sont ensuite proposées et mises en œuvre. Les experts du Cetim se tiennent à votre disposition pour vous apporter conseils et expertises dans cette problématique. N’hésitez pas à les contacter : cliquez ici.

 

Stress and failure analysis of mechanically fastened joints in composite laminates

Marie-Laure Dano, Guy Gendron, André Picard, 
Stress and failure analysis of mechanically fastened joints in composite laminates, Composite Structures, Volume 50, Issue 3, November 2000, Pages 287-296, ISSN 0263-8223, 10.1016/S0263-8223(00)00119-7. 
http://www.sciencedirect.com/science/article/pii/S0263822300001197
Abstract : The literature published on single mechanically fastened joints in fiber-reinforced plastics is reviewed. A finite-element model is developed to predict the response of pin-loaded composite plates. The model takes into account contact at the pin–hole interface, progressive damage, large deformation theory, and a non-linear shear stress–strain relationship. To predict the progressive ply failure, the analysis combines Hashin and the maximum stress failure criteria. The objectives of the study are to determine the influence of the failure criteria, the inclusion of a non-linear shear behavior on the strength prediction and the load–pin displacement curve. The proposed model is used to predict the bearing response of composite plates with different stacking sequences. Good agreement between experimental results and numerical predictions is observed. 
Keywords: Pin-joints; Composite laminates; Finite-element analysis; Non-linear modelling; Failure criteria; Bearing strength