Resume

Geraldo Rebouças

Senior Analysis Engineer – Drivetrain & Energy Systems, PhD

Summary

Senior Analysis Engineer with 10+ years of experience in modeling and simulation of complex machinery and energy systems, with a focus on drivetrain dynamics in wind turbines and hybrid trucks.

Expertise in physics-based modeling, numerical simulation, and data analysis to evaluate system behavior under realistic operating conditions and support engineering decisions. Proven track record in developing computationally efficient models aligned with high-fidelity simulations, enabling faster and more practical engineering workflows.

Core areas include system-level modeling, drivetrain analysis, and techno-economic evaluation (TCO, ROI, RUL).

Experience

Product Development Engineer

Brudeli Green Mobility AS Dec 2021 – May 2025

Developed simulation and analysis frameworks for hybrid, electric, and combustion truck powertrains to evaluate system performance and support design decisions.

• Modeled energy flow and component behavior (engine, battery, electric motors) using physics-based simulations (MATLAB/Simulink)
• Performed techno-economic analysis (TCO, ROI) to compare powertrain concepts and support decision-making
• Conducted sensitivity analyses on fuel, electricity, and battery costs to evaluate system trade-offs
• Developed power management strategies for a patented hybrid powertrain architecture
• Optimized system configurations by integrating simulation outputs across multiple operating scenarios

Postdoctoral Fellow

Norwegian University of Science and Technology (NTNU) Jun 2019 – May 2021

Developed modeling and analysis methodologies for drivetrain systems in offshore wind applications.

• Designed methods for stress estimation and structural down-scaling of multi-stage gearboxes
• Modeled wind turbine drivetrains using multibody dynamics (Simpack) and reduced-order models (MATLAB)
• Performed fatigue, vibration, and safety analyses for drivetrain components
• Developed integrated simulation workflows across Simpack, MATLAB, and KISSsoft (COM interface)
• Contributed to industrial applications, including modeling of reciprocating compressor valves
• Published research in peer-reviewed international conferences

PhD Researcher

Technical University of Denmark (DTU) Jul 2014 – Oct 2018

Conducted experimental, numerical, and analytical research on nonlinear mechanical systems.

• Investigated vibro-impact dynamics and assessed modeling assumptions against experimental data
• Developed and validated simulation models to improve accuracy and applicability
• Applied analytical and numerical methods to explain nonlinear system behavior
• Supported teaching in “Dynamics of Machinery” (MSc level)

Assistant Professor (non-tenured)

Federal University of Rio Grande do Norte (UFRN) Aug 2013 – Jun 2014

• Delivered undergraduate courses in numerical and fundamental computing (30–120 students)
• Designed assignments and evaluations; provided structured feedback
• Developed communication and teaching skills in large-group settings

Education

PhD in Mechanical Engineering Technical University of Denmark (DTU), 2018

• Thesis: Vibro-Impact Mechanics — Analytical, Numerical and Experimental Investigations

MSc in Mechanical Engineering Federal University of Rio Grande do Norte (UFRN), 2014

BSc in Mechanical Engineering Federal University of Rio Grande do Norte (UFRN), 2011

Technical Skills

Modeling & Analysis

• System modeling and simulation
• Drivetrain dynamics (wind turbines, hybrid trucks)
• Fatigue, vibration, and safety analysis
• Model validation and experimental data analysis

Programming & Tools

• MATLAB, Python, C++, Julia
• Simulink, Simpack, KISSsoft
• Git, Linux

Methods

• Numerical simulation
• Signal processing
• Experimental modal analysis (EMA)

Languages

• English (Full Professional)
• Norwegian Bokmål (Elementary, B1/B2)
• Portuguese (Native)

Additional Experience

Publications

Innovating Hybrid Power: Simulation, Testing, and Regulatory Compliance of a Patented Series-Parallel Heavy-Duty Truck

Brudeli, G., de Souza Rebouças, G.F., Vestgaard, B., Fagerås, H.F. Innovating Hybrid Power. In: Heintzel, A. (eds) Internationaler Motorenkongress 2025. Int.Engine.Congr. 2025 2025. Proceedings. Springer Vieweg, Wiesbaden.

Digital twin modeling for predictive maintenance of floating offshore wind turbine drivetrains

F. K. Moghadam, G. F. S. Rebouças, A. R. Nejad. Forschung im Ingenieurwesen

Modelling and Analysis of Vibrations on an Aerial Cable Car System with Moving Mass

Fonseca, C.A., Sampaio, G.R., Rebouças, G.F.d.S., Pereira, M., Cunha Jr., A. (2022). Modelling and Analysis of Vibrations on an Aerial Cable Car System with Moving Mass. In: Lacarbonara, W., Balachandran, B., Leamy, M.J., Ma, J., Tenreiro Machado, J.A., Stepan, G. (eds) Advances in Nonlinear Dynamics. NODYCON Conference Proceedings Series. Springer, Cham. https://doi.org/10.1007/978-3-030-81162-4_21

On Down-Scaled Modelling of Wind Turbine Drivetrains

G. F. S. Rebouças, A. R. Nejad. Journal of Physics: Conference Series 440 (2020)

Unilateral vibro-impact systems — Experimental observations against theoretical predictions based on the coefficient of restitution

G. F. S. Rebouças, I. F. Santos, and J. J. Thomsen. Journal of Sound and Vibration 440 (2019) 346-371

Validation of vibro-impact force models by numerical simulation, perturbation methods and experiments

G. F. S. Rebouças, I. F. Santos, and J. J. Thomsen. Journal of Sound and Vibration 413 (2018) 291–307

Talks

On Down-Scaled Modelling of Wind Turbine Drivetrains

September 28, 2020

Conference at TORQUE 2020 Conference, Delft, The Netherlands

Unilateral Vibro-Impact Systems – Experimental Observations and Theoretical Predictions using the Coefficient of Restitution

July 30, 2018

Conference at 4th International Conference on Vibro-Impact-Systems and Systems with Contact and Friction – ICoVIS, Kassel, Germany

Experimental validation of vibro-impact force models using numeric simulation and perturbation methods

June 27, 2017

Conference at 9th European Nonlinear Dynamics Conference – ENOC, Budapest, Hungary

Numerical investigation of chaotic behavior in Josephson Junctions (in Portuguese)

November 29, 2012

Conference at Congress of Applied and Computational Mathematics – CMAC-Nordeste, Natal, Brazil

Stabilization of Unstable Periodic Orbits in Josephson Junctions (in Portuguese)

August 02, 2012

Conference at 7th National Congress of Mechanical Engineering – CONEM, São Luis, Brazil

Teaching

Teaching Assistant

Assistant Professor (non-tenure)

Teaching Assistant

Service

• Reviewer for international conferences and journals (e.g., Journal of Vibration and Control and COBEM 2019)