Optimization of the flat stiffened panels

The safety of operation of designs is now an actual problem. With this purpose at the initial stage of designing it is necessary to provide a significant amount of requirements, frequently inconsistent. For example, it is restrictions on strength, stability, resource of elements of structures, constructive-technological restrictions etc. For many types of structures, for example airframe, the important characteristic is weight. It is necessary to minimize weight and at the same time, to provide necessary durability of structures. It is reached with the help of optimum designing methods. Varying parameters of rigidity of elements were carried out in the given restrictions as we try to provide minimum weight. Thus various search methods (gradient methods, a method of random search etc.) are used. In such statement varied parameters belong to an interval [0,∞]. In the given work the problem put to transform required sizes so that search was made on an interval [0,1]. It allows the use of effective methods of optimization on a final interval.