Experimental study and theoretical analysis of stability loss of titanium nickelide plates, caused by direct thermoelastic phase transformation under action of compressive load

The results of experimental studies of the dependence of the critical load of stability loss of rectangular titanium nickelide plates, experiencing a direct martensitic phase transformation under the action of a constant compressive load on the length of the plate, are presented. Within the framework of various formulations and concepts, an analytical solution of the corresponding stability task has been obtained. It is established that the best correspondence with experimental data is obtained when solving the task in a single-coupled formulation, within the framework of the concept of a ubiquitous additional phase transition.