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Analysis of an engine frame subjected to large imbalance loads
2009 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This master thesis deals with the load carrying capability of a turbine exhaust case subjected to large imbalance loads. The event is transient dynamic to its nature and displays non-linear features such as plasticity and large deflections. The main result sought is the ultimate load to which structural integrity can be guaranteed. Results are compared between dynamic and quasi-static analyses and the methods are evaluated. The ability to overcome computational difficulties and the solver time are compared between three finite element solvers. Abaqus/Explicit is compared to LS-DYNA in dynamic analysis and Abaqus/Standard is compared to ANSYS in quasi-static analysis. The results show consistency between analysis methods and solvers. LS-DYNA is faster than Abaqus/Explicit and Abaqus/Standard is faster than ANSYS for the simulations performed in this thesis.

Place, publisher, year, edition, pages
Keyword [en]
Technology, FEM, Finite element method, Buckling analysis, turbine, exhaust case, TEC, TRF, Abaqus, LS-DYNA, ANSYS
Keyword [sv]
URN: urn:nbn:se:ltu:diva-48689ISRN: LTU-EX--09/062--SELocal ID: 61d8c234-8a7f-4365-a0f0-ea22c6858fbcOAI: diva2:1022033
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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