Finite element model updating on structural components of simplified model of aircraft pylon

• Published in: AIP Conference Proceedings
• Main Author: Bahari A.R.; Yunus M.A.; Rani M.N.A.; Shah M.A.S.A.; Mirza W.I.I.W.I.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics Inc. 2022
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141852671&doi=10.1063%2f5.0103288&partnerID=40&md5=135904ad92f10dcdecd0ab2be2e32ba5

Assumptions and simplifications in finite element (FE) modelling for structural vibration analysis contribute to discrepancies in numerical results. This paper presents FE model updating on components of a simplified model of an aircraft pylon. The components are tested under free-free boundary conditions. Impact testing is performed with roving accelerometers technique. Modal parameters are predicted numerically using NASTRAN SOL 103 normal modes analysis. NASTRAN SOL 200 optimisation for modal based updating method is subsequently used and successfully minimised the total error of the initial FE model from 19.17 per cent to 3.19 per cent. These satisfactory results could be confidently enhanced the quality of the FE model to be used for the further engineering analysis. © 2022 Author(s).