Goal of research:
Investigation of the techniques for constructing of constitutive equations describing the mechanical properties of the materials during hat forming processes.
The continuum mechanics methods are used for modeling of objects of study. The theories of viscoplastic and superplastic forming as well as computer methods solving boundary value problems of continuum mechanics are used for simulation of forming processes.
Empirical base of research:
The research is based on empirical data obtained by tensile and free bulging testing of the investigated alloys.
Results of research:
Mathematical relations and computer algorithms allowing one to simulate forming of the material during free bulging testing.
Recommendations aimed to improve an adequacy of simulation results of gas forming technologies by correction of the constitutive constants in order to take into account the differences between its behavior in uniaxial and biaxial tension conditions.
Empirical data describing the behavior of several industrial alloys in conditions of uniaxial and biaxial tension.
Level of implementation, recommendations on implementation or outcomes of the implementation of the results
The results can be recommended for introduction at the enterprises of machine-building and aircraft industries on the design of gas forming technology.