One delaminated region in the cross-section of the beam was considered which extended to the full width of the beam. It was also assumed that the delamination was open. The influence of the delamination length and position on the changes of natural frequencies of flexural vibrations of the laminated composite cantilever beam were investigated. A multi-disciplinary, numerical approach to shape optimization of notches is presented. The design objective is to minimize the maximum effective stress for a given load.
Formulation is based on constant stress boundary element.
A special concept of segmented Bezier interpolants is adopted for defining geometry of the machine component, and the Sequential Linear Programming is used as optimization procedure. H.J. Antunez and M. Kleiber. Parameter sensitivity of metal forming processes. The flow formulation for metal forming analysis based on a rigid-viscoplastic material model is considered. In addition, one pressure unknown for each node is available in this method, thus yielding a finer discretisation for this variable.