Effect of process technological parameters on geometric characteristics of elements of cylindrical section stringer structures obtained by pneumomolding from anisotropic materials
On the basis of expressions to determine the stress-strain state of the pneumomolding process stringer designs of elements of cylindrical cross-section in the short-term creep mode is founded to influence the deformation time on stress and strain states, the power modes, the process limiting possibilities, geometric parameters of produced parts and unevenness. Possible embodiments of the forming at known law of change of pressure from time are shown, and also cases of forming at constant strain rate and constant pressure are considered. The calculations for special titanium and aluminum alloys are performed. The change of the blank thickness in the blank dome, in fixing place and in characteristic points is analyzed.