International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The production and breeding of new varieties of high-quality seed material is connected with the sowing of a wide range of crops with different physical and mechanical properties of seeds. In existing seeding machines, the sowing devices are capable of sowing loose and medium-flowing seeds, such as wheat, barley, rye, etc. further transport it to the working bodies for soil application. A characteristic disadvantage in the introduction of hard-flowing (non-flowing) seeds is the presence of a coagulation zone, which should be destroyed. In order to improve the quality of seeding non-flowing seeds, the design parameters of the sowing apparatus for seeding non-flowing grass seeds for moisture and energy-saving technologies in feed production will be substantiated and developed.

This paper presents creep buckling finite element modeling of steel beam-type structure. For beams under sustained loads the loss of stability may occur during a period of exploitation of structure even for loads lower than critical buckling load. For that reason stability is characterized by critical buckling time instead the critical buckling load. The simulation is performed using four nodded Kirchoff- Love theory based shell finite elements. For a space frame, as the test example, critical buckling times are calculated for different levels of applied load, temperature conditions and steel chemical composition.