Modeling the Stress–Strain State of a Cylindrical Shell Under Explosive Loading Using the Explicit Dynamics Method

Keywords

cylindrical shell; ANSYS Workbench; Explicit Dynamics; explosive loading; stress–strain state; equivalent stresses; plastic deformations; creep; residual strains; fragmentation

Abstract

The study presents a numerical simulation of the stress–strain state of a thin-walled cylindrical shell subjected to internal explosive loading using the Explicit Dynamics method in ANSYS Workbench. The finite element model with an impulse pressure law was used. The results show that the maximum stresses are localised in the central zone of the shell, where plastic deformations are formed and creep is accumulated, which ultimately leads to residual strains and fragmentation.

References

1. Dmytrakh I.M., Syrotyuk A.M., Krasiuk O.P., Bolkot P.A., Tsyrulnyk O.T., Leshchak R.L., Malyuk V.M., and Brychynskyy O.V. Specific features of hydrogen-charged 60S2A steel fragmentation under static explosion tests // Mater. Sci. – 2025. – 60, No. 5. – P. 543-548. https://doi.org/10.1007/s11003-025-00917-8
2. Skalskyi V.R., Dmytrakh I.M., Tsyrulnyk O.T., Syrotyuk A.M., and Zvirko O.I. Development of a method for controlled hydrogen fragmentation of medium-carbon steels to reduce their crack resistance // Strength Mater. – 2023. – 55, No. 6. – P. 1101-1106. https://doi.org/10.1007/s11223-024-00600-4
3. What is Explicit Dynamics? [Electronic resource]. – Available at: https://www.ansys.com/blog/what-is-explicit-dynamics