On the use of Modal Derivatives in Nonlinear Dynamics

Tijseling, H.

On the use of Modal Derivatives in Nonlinear Dynamics

Master thesis (2024)

Authors

H. Tijseling Mechanical Engineering

Contributors

Alejandro M. Aragón Computational Design and Mechanics (mentor)

Farbod Alijani Dynamics of Micro and Nano Systems (mentor)

RAJ Van Ostayen Mechatronic Systems Design (mentor)

Faculty

Mechanical Engineering, Mechanical Engineering

Structures Model Order Reduction Nonlinear Dynamics Modal Derivatives Thin-walled

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Published Date

16-07-2024

Language

English

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Faculty

Mechanical Engineering

Abstract

Model Order Reduction is an essential tool in analysis of structures exhibiting nonlinear dynamic behaviour. In this work the model order reduction method of Modal Derivatives, which is an extension of the linear Modal Truncation method into the nonlinear regime, is implemented in an automated scheme starting from a Finite Element discretization based on a Kirchhoff-Love shell element. After validation of the implementation, multiple thin-walled examples are analyzed and the results of the reduced-order model are compared to results from literature.

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