Improvement of finite element model by using sine vibration test results of acommunication satellite

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2021-2-15

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Çekiç, Abdulkadir

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In this thesis, the vibration analysis of a communication satellite is performed,and the improvementof the finite element model by using vibration test results is presented. First, the satellite finite element model isgenerated using MSC/PATRAN and MSC/NASTRAN commercial software. With the natural frequency and frequency response analysis, the expected frequency values and response amplitudes in accelerometers arecalculated in vibration tests. The results obtained in the vibration test arecompared with the analysis results using the HYPERGRAPH commercial software and their similaritywith the modal assurance criteriacalculation,which is developed using the FORTRAN programming language. The frequency values converged to the measured values as a result of the finite element model improvement,which is performed using error sensitivity assessment at the relevant frequencies.

Subject Keywords

Communication Satellites, Finite Element Method, Vibration Analysis, Finite Element Model Improvement, Vibration Test

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https://hdl.handle.net/11511/89781

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

A. Çekiç, “Improvement of finite element model by using sine vibration test results of acommunication satellite,” M.S. - Master of Science, Middle East Technical University, 2021.