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The article studies how things stand in terms of the determination of the stress-strained state of the hatch cover of the gondola car when the cargo falls on the cover. The methods that are currently used were briefly reviewed. The calculation was performed using nonlinear dynamic analysis in CAE (Computer Aided Engineering) NX system.

Innovative materials and structures are analyzed in this paper. To calculate the strength of the collision of flat wagons for the transport of large containers, there is no clear methodology for determining effort interaction between the container and the platform. At high longitudinal acceleration of the container, it is set in motion, and the consideration of this problem in a static setting impossible. The relevance of this work is to develop a methodology that is based on the equations of motion and considers dynamic interaction between container and platform.

The idea of direct synthesis of coordination compounds -- use of elemental metals or their oxides as starting materials - has been developed into "Salt route", "Ammonium salt route" and "Direct template synthesis", methods to synthesize heteropolynuclear complexes. The advantages of this approach in obtaining heterobi-, heterotrimetallic and mixed-anion heteropolynuclear coordination compounds are shown taking complexes of transition metals (Cu, Ni, Co, Mn, Zn, Cd) with aminoalcohols and ethylenediamine ligand as an example. The results of the X-ray crystal structure analysis and magnetic properties of the most interesting complexes are presented. [ABSTRACT FROM AUTHOR]