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most citedDefining Coherent Vortices Objectively from the Vorticity

336 citations · 3.5k across the 72 of their papers we have counts for

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Showing 2019 · math.DSShow all

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math.DS2019

Exact Model Reduction and Fast Forced Response Calculation in High-Dimensional Nonlinear Mechanical Systems

Sten Ponsioen, George Haller

We show how spectral submanifold (SSM) theory can be used to extract forced-response curves, including isolas, without any numerical simulation in high-degree-of-freedom, periodica…

math.DS2019★ 3 cited

Machine-Learning Ocean Dynamics from Lagrangian Drifter Trajectories

Nikolas O. Aksamit, Themistoklis P. Sapsis, George Haller

Lagrangian ocean drifters provide highly accurate approximations of ocean surface currents but are sparsely located across the globe. As drifters passively follow ocean currents, t…

math.DS2019★ 36 cited

How do Conservative Backbone Curves Perturb into Forced Responses? A Melnikov Function Analysis

Mattia Cenedese, George Haller

Weakly damped mechanical systems under small periodic forcing tend to exhibit periodic response in a close vicinity of certain periodic orbits of their conservative limit. Specific…

math.DS2019

When does a Periodic Response Exist in a Periodically Forced Multi-Degree-of-Freedom Mechanical System?

Thomas Breunung, George Haller

While periodic responses of periodically forced dissipative nonlinear mechanical systems are commonly observed in experiments and numerics, their existence can rarely be concluded…

math.DS2019★ 33 cited

Explicit Third-Order Model Reduction Formulas for General Nonlinear Mechanical Systems

Zsolt Veraszto, Sten Ponsioen, George Haller

For general nonlinear mechanical systems, we derive closed-form, reduced-order models up to cubic order based on rigorous invariant manifold results. For conservative systems, the…