The investigation is aimed at the improvement of the performance properties of the slotted shell elastic elements. The latter components are the open shell, deformable filler, and rigid pistons. In a good design, the elastic elements with an open shell possess high retention along with comparably low rigidity and the required level of vibrations damping. At present, there is theoretical background for the calculation of the elastic elements with an open cylindrical shell of a stable thickness. The problem of the open shell section's effect on the material consumption, strength, and deformation properties of the elastic element has not been investigated. The procedure of efficient design of the full-strength section of the elastic element with the filled slotted shell, which is in bending, has been developed. Some justified assumptions, which allow one to perform the analytical investigations, have been introduced at the problem formulation stage. Among them are the hypotheses on the inextensibility of the middle shell surface, neglection of friction on the contact surface, and small shear modulus of the filler material. The authors have formulated and solved the one-dimensional task on the interaction of the deformable weakly compressible filler with an open cylindrical shell with the azimuth variable thickness. The full strength of the shell is taken as a key criterion of the construction of the optimum section of the elastic element. The analytical expression has been obtained for the determination of the open shell thickness. The comparison of material consumption and compliance of the full-strength elastic element with similar characteristics of the elastic element with the slotted shell is performed. It is established that the compliance of the proposed elastic element exceeds the prototype compliance by 70%, while the material consumption of the shell with the variable thickness is 57% lower as compared with the corresponding value for the shall with constant thickness.
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Translated from Problemy Prochnosti, No. 2, pp. 82 – 87, March – April, 2021.
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Shats’kyi, I.P., Shopa, V.M. & Velychkovych, A.S. Development of Full-Strength Elastic Element Section with Open Shell. Strength Mater 53, 277–282 (2021). https://doi.org/10.1007/s11223-021-00286-y
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DOI: https://doi.org/10.1007/s11223-021-00286-y