Denysiuk O. Models and methods for controlled by accuracy numerical analysis of corroding hinged-rod structures

The object of research - process of corrosive deformation of hinged-rod structures (HRS) in aggressive environments which creates risk of their destruction before the expiration of the required service life; goal - improvement of quality and reliability of design solutions in design of corroding HRS by ensuring the accuracy of complex constraint functions calculation with acceptable calculation cost; methods - mathematical methods of process analysis, penalty method, genetic algorithm, flexible tolerance method, artificial neural networks, finite element method; results - author developed a new conceptual model of corroding HRS optimal design; developed new method of constraint function calculation error control in optimization problem based on use of artificial neural networks; developed new method of optimization problem solution based on genetic algorithm and flexible tolerance method; im-proved the model of HRS corrosive deformation creating new models of corroding cross-sections of rod elements; introduced in LLC "Dniprovska holdingova kompaniya" for expert assessments of residual long-bearing capacity and development of new design projects for metal structures of industrial buildings, taking into account the influence of aggressive environments.