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An investigation on optimisation of a car rim by elasto-plastic analysis

Akbulut H.

International Journal of Applied Mechanics and Engineering

2001

Vol. 6, no 3

627-638

This paper presents the optimisation of an octopus type car rim in which first critical zones have been found and then optimum thickness has been investigated using an elasto-plastic analysis. In this study, three dimensional finite elements method has been used for conducting elasto-plastic analysis. In the finite element analysis, the elements forming the meshes are hexahedral linear elements with eight nodes. Twelve different meshes were used. A quadrant of rim is exploited due to its symmetric shape. The theoretical results have been compared with experimental ones. It seems that the theoretical results are in agreement with the experimental ones. The results were given in tables, graphics and figures.

Calculation of residual stresses in metal-matrix composite laminated plates under transverse loads

Aykul H., Meric C., Akbulut H.

Applied Mechanics and Engineering

1999

Vol. 4, no 1

171-185

An isoparametric quadrilateral element with nine nodes is developed for the elasto-plastic analysis of the laminated plates. A stainless steel fiber reinforced aluminum metal matrix laminated and simple supported plate is loaded transversely. Elastic, elasto-plastic and residual stresses are calculated in the symmetric and/or antisymmetric cross-ply and angle-ply laminated plates for small deformations. Iteration numbers are chosen 50, 100 and 150. The spread of plastic zones is illustrated. A metal-matrix composite layer is manufactured by using moulds under the action of 30 MPa pressure and heating up to 600oC. The first-order shear deformation theory is used.