Developing an efficient FEM structural simulation of a fan blade off test in a turbofan jet engine

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Date
2007-10-29Author
Husband, Jason Burkley
Type
ThesisDegree Level
DoctoralMetadata
Show full item recordAbstract
This work develops a methodology for full engine FEA simulation of the fan blade off containment test for a jet engine using LS-Dyna. The fan blade off containment test is a safety requirement involving the intentional release of a fan blade when the engine is running at full power. The released blade must not pierce or fracture the engine cases during the impact or rotating unbalance. The novel feature of the LS-Dyna simulation is the extensive full engine geometry as well as the widespread use of nonlinearities (mainly plasticity and friction) to absorb the large kinetic energies of the engine rotors. The methodology is simple to use, runs quickly and is being recognized by industry as a contender for widespread implementation. Future applications look promising enough that the methodology warrants further development and refinement.
Degree
Doctor of Philosophy (Ph.D.)Department
Mechanical EngineeringProgram
Mechanical EngineeringSupervisor
Szyszkowski, WalerianCommittee
Oguocha, Ikechukwuka N.; Lawrence, Charles; Hertz, P. Barry; Fotouhi, Reza; Boulfiza, MohamedCopyright Date
October 2007Subject
LS-Dyna
finite element method
jet engine fan blade containment