Experimental data from a multiple blade shed incident are used to determine the forces exerted by the blades on a containment ring. A transient, dynamic, finite element procedure is used to model the ring during the blade shed. This work focuses on the selection of the proper numerical parameters that lead to a stable and accurate numerical solution while maintaining physical reality. Examination of the degree of implicitness and various measures of damping, as well as incorporation of large displacement algorithms, has lead to a simulation that successfully determines the forces on the ring. Accurate determination of these forces is necessary for optimal design of containment systems.

Issue Section:
Gas Turbines: Structures and Dynamics
Topics:
Blades, Algorithms, Containment systems, Damping, Design, Displacement, Finite element analysis, Simulation, Transients (Dynamics), Containment
1.
ANSYS, 1989, “Engineering Analysis Systems,” Swanson Analysis, Inc., Houston, PA, May.
2.
Dewhurst, T. B., 1991, “The Impact Load on Containment Rings During a Multiple Blade Shed in Aircraft Gas Turbine Engines,” ASME Paper No. 91-GT-163.
3.
EPRI, 1984, “Assessment of Turbine-Casing Impact Code Calculations,” EPRI N-2744, May.
4.
FAA, 1990, “Background Data and Proposed Advisory Circular, A Development Plan to Support Turboshaft Engine Rotor Burst Protection,” Apr.
5.
Hagg, A. C., and Sankey, G. O., 1973, “The Containment of Disk Burst Fragments by Cylindrical Shells,” ASME Journal of Engineering for Power, Vol. 95, Nov.
6.
Hallquist, J. O., 1983, “Theoretical Manual for DYNA3D,” Lawrence Livermore Laboratory, UCID-19401, Mar.
7.
Hughes, T. J. R., 1987, The Finite Element Method, Prentice-Hall Inc., Englewood Cliffs, NJ.
8.
NAPC, 1969, “Rotor Burst Protection Program,” NAPTC-AED-1901, May.
9.
NAPC, 1987, “Statistics on Aircraft Gas Turbine Engine Rotor Failures That Occurred in US. Commercial Aviation During 1981,” DOT/FAA/CT-86-42, Mar.
10.
SAE, 1987, “Report on Aircraft Engine Containment,” AIR 4003, Sept.
11.
Salvino, J. T., et al., 1988, Experimental Guidelines for the Design of Turbine Rotor Fragment Containment Rings, DOT/FAA/CT-88/21, FAA Technical Center, Atlantic City International Airport, NJ.
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