INFLUENCE OF RING-SHAPED INCLUSIONS OF VARYINGTHICKNESS ON STRESS CONCENTRATION AROUNDA CIRCULAR HOLE IN THIN PLATES AND CYLINDRICAL SHELLS
DOI:
https://doi.org/10.15407/dopovidi2025.04.065Keywords:
cylindrical shell, thin plate, circular hole, annular inclusion, stress-strain state, stress concentration factor, finite element methodAbstract
The stress-strain state of thin plates and thin-walled cylindrical shells with a circular hole and a ring-shaped inclusion of variable thickness is studied using finite element analysis. The influence of the geometric parameters of the inclusions on the concentration of stresses and strains in the plate and shell near the hole is analyzed. It has been shown that the use of a ring inclusion with certain geometric parameters allows reducing the stress concentration and the corresponding deformation intensity near the hole by more than 45 %. The law of change in the thickness of the inclusion and its width significantly affects the magnitude of the concentration of the stress-strain state parameters of the plate and shell. The results obtained from computational experiments open up prospects for finding rational parameters for inclusions in terms of reducing stress concentration in order to increase the strength and reliability of thin-walled structures.
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