TY - GEN
T1 - Finite-element simulations and probabilistic fracture assessments of the response of alternate rifling geometries
AU - Segall, A. E.
AU - Carter, R.
PY - 2008/5/16
Y1 - 2008/5/16
N2 - A 3-D finite-element model was used to simulate the severe and localized thermal/pressure transients and the resulting stresses experienced by a rifled ceramic-barrel with a steel outer-liner; the focus of the simulations was on the influence of non-traditional rifling geometries on the thermoelastic- and pressure-stresses generated during a single firing event. In order to minimize computational requirements, a twisted segment of the barrel length based on rotational symmetry was used. Using this simplification, the model utilized uniform heating and pressure across the ID surface via a time-dependent convective coefficient and pressure generated by the propellant gasses. Results indicated that the unique rifling geometries had only a limited influence on the maximum circumferential (hoop) stresses and temperatures when compared with more traditional rifling configurations because of the compressive thermal stresses developed at the heated (and rifled) surface.
AB - A 3-D finite-element model was used to simulate the severe and localized thermal/pressure transients and the resulting stresses experienced by a rifled ceramic-barrel with a steel outer-liner; the focus of the simulations was on the influence of non-traditional rifling geometries on the thermoelastic- and pressure-stresses generated during a single firing event. In order to minimize computational requirements, a twisted segment of the barrel length based on rotational symmetry was used. Using this simplification, the model utilized uniform heating and pressure across the ID surface via a time-dependent convective coefficient and pressure generated by the propellant gasses. Results indicated that the unique rifling geometries had only a limited influence on the maximum circumferential (hoop) stresses and temperatures when compared with more traditional rifling configurations because of the compressive thermal stresses developed at the heated (and rifled) surface.
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U2 - 10.1115/PVP2007-26081
DO - 10.1115/PVP2007-26081
M3 - Conference contribution
AN - SCOPUS:43349100205
SN - 0791842819
SN - 9780791842812
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 519
EP - 528
BT - 2007 Proceedings of the ASME Pressure Vessels and Piping Conference - Design and Analysis
T2 - 2007 ASME Pressure Vessels and Piping Conference, PVP 2007
Y2 - 22 July 2007 through 26 July 2007
ER -