Analytical model for friction coefficient determination in hydroforming of thin-walled tube elements/Plonasieniu vamzdiniu elementu hidraulinio formavimo trinties koeficiento analitinis modelis

Industrial branches where the changes occur with the introduction of the new technologies in a very short period are automobile and aviation industries, because the securing and ergonomic criteria had to be achieved. These demands initialized setting of the new productive philosophy, which is based on a modern production like plastic forming and modelling with an incompressible fluid.