Proceedings of the International scientific and practical conference ― Cambridge Science and Education Conference‖ (February 23-25, 2026) / Publisher website: www.naukainfo.com. – Cambridge, United Kingdom, 2026. - 289 p.

84 GENERALMECHANICS AND MECHANICAL ENGINEERING UDC 539.3 Volodymyr Sirenko Candidate of Technical Sciences (PhD) Deputy Director of Yuzhnoye State Design Office Dnipro, Ukraine CHOICE OF CALCULATION SCHEME FOR CALCULATION OF BOLT CONNECTIONS OF MISSILES CARRIER COMPARTMENTS Abstract. The paper considers the features of predicting the ultimate loads of bolted joints in the docking elements of launch vehicle compartments based on finite element analysis. The decisive influence of the correct selection of the computational scheme and the consideration of eccentric tension caused by load application eccentricity is demonstrated. The introduction of a ―force lever‖ coefficient is proposed to refine the assessment of the stress state. The sensitivity of the results to tightening parameters, bushing geometry, and bolt arrangement is investigated, which makes it possible to increase the reliability of strength calculations for launch vehicle joint assemblies. Keywords: launch vehicle; bolted joint; finite element analysis; stress–strain state; structural strength. Forecasting the ultimate loads of the connecting elements of launch vehicle compartments is one of the rather important tasks of creating power elements of