Abstract
The evolving designs and requirements of aircraft structural components has recently created an increased interest in application of nonlinear modelling techniques. While the finite element (FE) methods already incorporate the necessary mechanics to model nonlinear behavior in structures, a major drawback is the considerably higher computation cost in comparison to the linear counterparts. Reduced order modelling (ROM) techniques offer a solution to counter this limitation. The work presented here is focused on the Koiter-Newton (K-N) model reduction technique which is based on a cubically nonlinear mechanical model. The K-N method utilizes existing FE models as a starting point to generate equivalent ROM parameters and thus, can be applied to obtain ROMs for generic structures. The model validity is assessed by conducting nonlinear dynamic analyses of two models with different boundary conditions. Nonlinear frequency response analyses are conducted to demonstrate hardening effects in both the test cases. Comparisons to full FE analyses show significant reduction in computational times.
Original language | English |
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Title of host publication | Proceedings of the AIAA SCITECH 2025 Forum |
Number of pages | 12 |
ISBN (Electronic) | 978-1-62410-723-8 |
DOIs | |
Publication status | Published - 2025 |
Event | AIAA SCITECH 2025 Forum - Orlando, United States Duration: 6 Jan 2025 → 10 Jan 2025 |
Conference
Conference | AIAA SCITECH 2025 Forum |
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Country/Territory | United States |
City | Orlando |
Period | 6/01/25 → 10/01/25 |