EXPERIMENTAL STUDY OF THE STABILITY OF REINFORCED CYLINDRICAL SHELLS UNDER AXIAL COMPRESSION
Keywords:critical load, initial imperfections, displacement, stability, experiment
Purpose: Show the real effect of initial imperfections on the upper critical load of cylindrical shells. Method: Analysis of experimental data. Results: This article presents the results of experimental studies of the stability of cylindrical shells reinforced with stringers with initial imperfections in shape under axial compression. A detailed analysis of the experimental data has been performed. A conclusion is made regarding the stability of cylindrical shells. Recommendations on the directions of further research are given. Discussion: The large difference between the experimental and theoretical axial critical loads of cylindrical shells made researchers look for the reasons for this difference. It was considered that one of the main reasons is the presence of initial imperfections in the shells. Then doubts arose as to the veracity of this statement. There were conflicting opinions. It became necessary to find out the real influence of the initial imperfections on the stability of cylindrical shells.
Grigolyuk E. I., Kabanov V. V. (1978). Ustoichivost' obolochek. [Stability of shells.] M. Nauka, 359p. (In Russian)
Timoshenko S. P. (1914). K voprosu o deformatsii i ustoichivosti tsilindricheskoi obolochki.[ On the Deformation and Stability of a Cylindrical Shell]. Vestn. Technology Island, vol. 21, from 785 to 792
Izv. Petrograd. elekrotekhn. inta, 1914, vol. 11, pp. 267 - 287. (In Russian)
Donnell H. A. (1934). New theory for the buckling of thin cylinders under axial compression and bending. Trans. ASME, Ser. E, vol. 56, pp. 795-806.
Kan S.N. and Lipovskii D.E. (1962). Stability of wireframe circular cylindrical shells under axial compression and transverse pressure. Izv. higher. educat. instit. Aviation technology, No. 4. (In Russian).
Kan, S.N. and Lipovskii D.E. (1963). Bearing capacity of thin-walled circular shells under compression. Izv. higher. educat. instit. Aviation technology, No. 2. (In Russian).
Amiro I. Ya., Zarutsky V.A, Polyakov P.S. (1965). Experimental study of the bearing capacity of ribbed cylindrical shells. Applied Mechanics, Volume 1, Issue 4. (In Russian).
Khachinson D.V., Amazigo D.K. (1967). Sensitivity of eccentrically reinforced cylindrical shells to shape imperfections. Military equipment and astronautics vol. 5, no. 3. https://doi.org/10.2514/3.3992
Budyansky V., Khachinson D. V. (1966). Review of some problems of buckling. Rocket technology and astronautics. vol. 4, no. 9.
Terebushko O.I. (1967). On the influence of the location of the ribs on the value of the critical load of a cylindrical reinforced shell. Calculation of spatial structures, vol. 11, M., Stroyizdat.
Kots V.M., Lipovsky D.E., Todchuk V.A. (1972). Carrying capacity of reinforced cylindrical shells taking into account various initial perturbations. Calculation ofthin-walled structures, vol. 3, Ministry of Defense of the USSR.
Todchuk V.A. (1973). Stability of ribbed cylindrical shells taking into account the non-uniformity of their loading and initial deflection. Dissertation for the degree of candidate of technical sciences. (In Russian)
Todchuk V. A. (2019). New approach to determining axial critical loads shells, plates and rods. Proceedings of the NAU, no 2, pp. 62-70. https://doi.org/10.18372/2306-1472.79.13833