Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Shape Distortions of Angled Sandwich panels
Submission Author:
olumide Mayowa makinde , SP
Co-Authors:
Alfredo Faria, Mauricio Donadon, olumide Mayowa makinde
Presenter: olumide Mayowa makinde
doi://10.26678/ABCM.COBEM2017.COB17-0531
Abstract
Shape distortions are a major source of problems for composite manufacturers. Moreso, these shape distortions are more emphasized in sandwich panels due to their inherent strengths and improved resistance to bending. In this paper, the analytical model developed by Fernlund for angled sandwich panels was extended to capture cure shrinkage effect. The results of the analytical model enables the evaluation of the contributions of the thermal and cure shrinkage effect to the spring-in phenomenon. Additionally, the results of the analytical model was then compared with Svanberg model implemented using UMAT in Abaqus. The results of both models show good accuracy in their prediction of Spring-in behaviours of Angled Composite Sandwich panels. The analytical model shows that the thermal contribution of the sandwich panels remain fairly constant irrespective of the percentage content of the sandwich core while the contributions of the shrinkage effect reduces.
Keywords
Residual stresses, Shape distortions, spring in, Sandwich panels, Composite
