Abstract
One of the most common operations of magnetic pulse sheet stamping is the formation of a rift and stiffeners, which are widely used in aircraft manufacturing. Reducing labor intensity while maintaining the required quality parameters of the obtained parts is one of the most relevant issues of sheet stamping. The solution to this problem should provide, with given tolerances on the geometric dimensions of the part, the requirements for the surface condition, strength and performance characteristics of the product. A necessary condition for the implementation of this goal is the absence of signs of technological defects, in particular, the formation of waves, corrugations, ligaments in the areas of the part on compressed and compressed-stretched sections of the workpieces. In this paper, to study the stress-strain state of a rift workpiece in forming – drawing processes using control elements, the finite element method was used. An example of numerical simulation of the electromagnetic forming of a rift with the obtained mesh shape of a workpiece without a corrugation defect or metal shrinkage is given.
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