Hydroformen von Aluminiumrohr

Hydroforming is a novel metal forming technique. The paper presented, deals with hydroforming of tubes under the action of axial forces, internal or external pressure and a torque, regarding both work-hardening of the tube material and thickness changing in tube wall. In case of cylindrical expansion at constant rate of a thick-walled aluminium tube the time-depending state of stresses in the tube wall is computed and the corresponding pressure and force funtions are determined