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Marine operations are omnipresent during full MRE's life cycle. All technologies are concerned; from offshore or floating wind up to tidal & wave energies. 
The missions are various, complex, expensive and can present high human, material and economical risks. The mastering and the assessment of complex marine operations are important levers to optimize and reduce CAPEX, OPEX or LCOE.


FRyDoM allows complex multibody systems modelling, integrating rigid and flexible bodies, kinematic joints, actuators and thrusters and control systems in a marine environment.


The FRyDoM framework is built on top of a robust constrained multibody dynamics solver, a finite element module to model flexible parts and a collision detection engine. Marine environment models and their loads on structures are then available to build fairly complex marine operations. FRyDoM is implemented in full object oriented C++11/14 language and is designed from ground with an open API allowing for easy extension with new features and models. Validation of the code is a main concern and several benchmarking cases are currently addressed.

  • Numerical framework for the development of innovative products or tailored tools (training, virtual reality, embedded system...)
  • Both Open sources (GPLV3) and commercial licensing
  • Fast and complete modelling of installation operations including transients


  • Environment models including tides
  • Contact detection & Multibody solver
  • Wind & Current forces
  • Waves forces (first order)
  • Nonlinear Froude-Krylov wave excitation
  • Mean waves drift forces
  • Morison model
  • Restoring forces (linear and nonlinear hydrostatics)
  • Cables (quasi static & dynamic FEA) for mooring system modelling, tug operations, lifting


Strong ongoing developments are carried out by the FRyDoM developpers such as;
  • FEA modelling of mooring cables
  • Nonsmooth Contact
  • Cables/seabed interactions
  • Actuators control e.g. cranes, winches, etc.
  • Floating Wind Turbines
  • etc.

This work was carried out within the framework of the WEAMEC, West Atlantic Marine Energy Community, and with funding from the Pays de la Loire Region

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Published on December 13, 2018 Updated on June 30, 2020