Failure analysis of a laminated front fender

automotive failuresThe main goals of this project were the development of the body for an electric vehicle and the study of the front fender. Various aspects related with the project of a fiberglass component were addressed in this work like the choice of materials, and manufacturing processes of composite materials. In order to test the front fender, this was modeled seperatly and imported to ANSYS classic. A model with solid elements and a tailored mesh was developed, having one element per ply in the through the thickness direction and accounting for aspects like contact and laminate layup. Failure analysis was made by a progressive damage model with a set of Hashin type failure criteria.

telecharger le doc

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