cylindrical shell, tank truck, bulk filler, elastic-plastic bending, stability, critical load, experiment.

The results of an experimental study of the loss of stability of thin-walled closed cylindrical shells filled with bulk material, hinged on two supports, are presented. A method for approximate calculation of the bending stability of thin-walled cylindrical shells filled with bulk material has been developed. An approximate calculation of the tank truck from the weight load is shown.

Rytova Tatyana Georgievna, Candidate of technical Sciences, associate Professor, Moscow State University of Civil Engineering, Moscow, Russia.

Maximova Lyudmila Anatolyevna, Doctor of physical and mathematical Sciences, Professor, Russian University of transport, Moscow; I.N. Ulyanov Chuvash State University, Cheboksary, Russia.

Petrov Mikhail Vasilyevich, Doctor of Technical Sciences, Associate Professor, I.N. Ulyanov Chuvash State University, Cheboksary, Russia.

Pfanenshtil Nadezhda Georgievna, Candidate of historical Sciences, Associate Professor, Kazan Branch of the Russian State University of Justice, Kazan, Russia.