Augustin Gakwaya

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Bursting, an irreversible failure in tube hydroforming (THF), results mainly from the local plastic instabilities that occur when the biaxial stresses imparted during the process exceed the forming limit strains of the material. To predict the burst pressure, Oyan's and Brozzo's decoupled ductile fracture criteria (DFC) were implemented as user material(More)
The aim of this paper is to study the impact of the manufacturing process of a skid landing gear on its performance during drop test simulation. A complete methodology is proposed to implement it on Abaqus. When a new landing gear design is to be designed, it has to be validated by experimental drop tests, and has to demonstrate the same overall impact(More)
A smoothed finite element method formulation for the resultant eight-node solid-shell element is presented in this paper for geometrical linear analysis. The smoothing process is successfully performed on the element midsurface to deal with the membrane and bending effects of the stiffness matrix. The strain smoothing process allows replacing the Cartesian(More)
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