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• Prediction of FLD using Abaqus and Gurson Model for Simple Flat Spacemen

  32-44

  Tatiane Domokos

  Attila Baksa

  Szabolcs Szávai

  Views:

  105

  In the past century, in many industries, such as, metal forming industry, it has been important to predict ductile damage and fracture of metals under complex loadings. Regarding damage mechanics, one of the most classical models is the GTN, which was originated from Gurson and later enhanced by Tvergaard and Needleman. The inprovement was achieved by introducing an equivalent void volume fraction f and two more parameters called q₁ and q₂ into the yield function of Gurson’s model.

• The Influence of the Boundary Conditions on the Buckling of Thin-walled Cans during Manufacturing

  41-50

  Dávid Gönczi

  Views:

  94

  In this paper the effect of the boundary conditions on the stability of thin-walled aerosol cans under axial pressure is investigated. The main objective is to outline the main characteristics of this highly nonlinear mechanical problem and to present methods to simulate the buckling of cans with different boundary conditions. Due to the numerical difficulties coming from the contact between the can and different components of the machines, the effect of the different supports of the can is investigated on the crushing (or buckling) force at which the loss of stability occurs. The commercial finite element software Abaqus is used to solve the problems and to present the efficiency of FE codes in the design process of cans.