Szukana fraza: [Abstract = "An optimization method for geometrically non\-linear mechanical structures based on a sensitivity gradient is proposed. This gradient is computed by using an adjoint state equation and the structure is analysed by means of a total Lagrangian formulation. This classical method is well\-understood for regular cases, but standard equations \(see e.g. Rousselet et al., 1995\) have to be modified for the limit\-point case."]