Updating of gas turbine finite element model by experimental modal analysis results and modeling disc/blade joint

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ABBASI KAVEH; Siami ali; Khodabandeloo Babak; Asayesh Masood

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Journal: Modares Mechanical Engineering Year:2018 | Volume:18 | Issue:8 Page(s): 202-208

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Title

Updating of gas turbine finite element model by experimental modal analysis results and modeling disc/blade joint

Author(s)

ABBASI KAVEH | Siami ali | Khodabandeloo Babak | Asayesh Masood | Issue Writer Certificate

Keywords

Finite Element ModelingQ1

Model updatingQ1

Gas TurbineQ2

Modal AnalysisQ2

Disc and blade jointQ1

Abstract

The precise finite element model is an efficient tool for vibrational analysis. It should be mentioned that, in structural dynamic analysis finite element models of system should be able to accurately predict system characteristics such as natural frequencies. Contrary to static analysis, in structural dynamic analysis, it is not possible to overestimate system characteristics or apply safety factor for predicted characteristics; that means that the exact values of system characteristics such as natural frequencies, should be derived in structural dynamic. According to this, constructing a reliable model in the structure dynamic always has great degree of importance in vibrational analysis. In this study, it has been tried to extract a reliable finite element model for a row of a sample turbine of RollsRoyce brand using empirical results. So, the material properties of the disk and the connection between the disk and the blade are corrected and updated using experimental Modal Analysis results. Also, it has been tried to propose new method to model and update the disk and blade joint. Finally, reliable finite element model could be used for more analysis such as derivation of Campbell diagrams of system.

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APA: Copy

ABBASI, KAVEH, Siami, ali, Khodabandeloo, Babak, & Asayesh, Masood. (2018). Updating of gas turbine finite element model by experimental modal analysis results and modeling disc/blade joint. MODARES MECHANICAL ENGINEERING, 18(8 ), 202-208. SID. https://sid.ir/paper/179883/en

Vancouver: Copy

ABBASI KAVEH, Siami ali, Khodabandeloo Babak, Asayesh Masood. Updating of gas turbine finite element model by experimental modal analysis results and modeling disc/blade joint. MODARES MECHANICAL ENGINEERING[Internet]. 2018;18(8 ):202-208. Available from: https://sid.ir/paper/179883/en

IEEE: Copy

KAVEH ABBASI, ali Siami, Babak Khodabandeloo, and Masood Asayesh, “Updating of gas turbine finite element model by experimental modal analysis results and modeling disc/blade joint,” MODARES MECHANICAL ENGINEERING, vol. 18, no. 8 , pp. 202–208, 2018, [Online]. Available: https://sid.ir/paper/179883/en

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