Affiliation:
1. Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy
Abstract
In this work, we discuss the numerical challenges involved in the computation of the complex eigenvalues of damped multi-flexible-body problems. Aiming at the highest generality, the candidate method must be able to deal with arbitrary rigid body modes (free–free mechanisms), arbitrary algebraic constraints, and must be able to exploit the sparsity pattern of Jacobians of large systems. We propose a custom implementation of the Krylov–Schur method, proving its robustness and its accuracy in a variety of different complex test cases.
Subject
Electrical and Electronic Engineering,Industrial and Manufacturing Engineering,Control and Optimization,Mechanical Engineering,Computer Science (miscellaneous),Control and Systems Engineering
Cited by
2 articles.
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1. A unified analytical expression of the tangent stiffness matrix of holonomic constraints;Computer Methods in Applied Mechanics and Engineering;2024-02
2. Eigenvalues of the Free Rotation Mode of the Multi-bladed Rotor;Proceedings of the 11th IFToMM International Conference on Rotordynamics;2023-08-27