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Release Note Tdyn

Release Note Tdyn

New in version 12.2.3

New features

  • Morison elements implemented in SeaFEM.
  • Energy conserving solver available in RamSeries.
  • Master/Slave contacts implemented in RamSeries (sticking and frictionless contacts).
  • Two-way coupling implemented in RamSeries/SeaFEM (Body and HFS coupling).
  • Tool for generating catenary curves available.
  • Initial configuration analysis available in RamSeries (dynamic analyses).
  • Ground acceleration implemented in RamSeries.
  • Non-linear body links implemented in SeaFEM.
  • Condition HFS implemented in SeaFEM (limited height condition).
  • New multibodies interface for SeaFEM.
  • New postprocessing and animation capabilities.

General improvements

  • FSI coupling GUI improved (Tdyn/RamSeries and SeaFEM/RamSeries).
  • Improvement of multibody links in SeaFEM.
  • File coupling with SeaFEM improved in RamSeries.
  • Two-way coupling in RamSeries/Tdyn improved.
  • Cable and membrane elements improved in RamSeries.
  • Improvement of connections among different type of elements.
  • Improved tool for calculating total weight and center of gravity. Now it also calculates inertia moments.
  • Composite materials GUI renewed.
  • Turbulence models (including temperature turbulence) improved.

New in version 12.1.2


  • Multibody dynamics capabilities in SeaFEM (includes body links).
  • New mooring options in SeaFEM. (New mooring types and segment links).
  • Mooring systems can be defined independently on each body (SeaFEM).
  • Non-linear hydrostatic effects available in SeaFEM.
  • New options in wave spectra generation in SeaFEM (Random wave spectra repeatibility).
  • New contact options for species advection and generic PDEs problems. Contact resistance functions available.
  • Improvements in the update of boundary conditions in compressible models (Tdyn).
  • Global performance optimizations in SeaFEM algorithms.
  • GPU solver library updated.
  • Tdyn GUI icons reviewed.
  • General bug corrections in Tdyn and Ramseries executable files.
  • New tools and improvements in post-processing system.


  • Non-linear geometry implemented for all elements (Large Displacements).
  • Follower loads implemented.
  • New schemes implemented for dynamic analises (Energy Conserving/Decaying)
  • New coupling loads between Tdyn-RamSeries-SeaFEM.
  • Cables and membrane elements available in RamSeries.
  • New tool for creating automatic moooring lines (NURBS catenaries) (RamSeries)
  • New tool for checking local fatigue damage (RamSeries)
  • New tool for calculating total weight and center of gravity.
  • Improvements in RamSeries data tree (including GUI icons review).
  • General bug corrections in Tdyn and Ramseries executable files.
  • New tools and improvements in post-processing system.

New in version 11.0


  • New GPU solvers: BiCG, CG
  • New GPU-CPU Preconditioners: SPAI, Deflated
  • Improved ODDLS algorith
  • New VOF algorith
  • Lagrangian tracking tool (+ pathline + streamline)
  • New functions
  • New Tcl operators (including sparsematrix manipulation)
  • Joule effect added for compressible flow.
  • New Seakeeping module (beta)
  • Potential flow solver based on waves Stokes perturbation (FEMSeakeeping module)
  • Up to 6 degrees of freedom
  • White noise, mono-chromatic waves and Pierson Moskowitz spectrum
  • Mooring and non-linear external forces
  • Coupled with the structural module


  • Morison Loads
  • Improved Fluid-Structure calculations (Seakeeping, Vibrations and Ransol).
  • Cables and membranes including pre-stressing
  • Using paralelized solver hybrid-sparse (Pardiso)
  • Triangular loads in beam
  • Beams distributed torque loads
  • 32 and 64 bits version
  • All solvers can be used in Windows and in Linux
  • Added Von_mises, Rankine and Tresca criteria
  • LaRC04 Three-dimensional Failure Criteria implemented for laminates
  • More complete Tsi-Wu Security Factor, including shear stresses
  • Added shear stresses in laminate calculations.
  • Added option for using all elements available together (Beams, Shells, Solids, Cables and Membranes).
  • Wrinkling algorithm for Membrane elements
  • Dynamic custom loads
  • J2 Plasticity model for Reissner Mindlin shell and solids

New in version 10.3

  • FSI (Coupled analyses) capabilities improvement.
  • Tdyn Tcl Interface: new functions and improvements.
  • Flow rate calculation (postprocess) available for linear, triangular and quad elements.
  • Bug corrections.

New in version 10.2

  • Coupled Analysis management improvements.
  • GUI improvements

New in version 10.1

  • Coupled Analysis management improvements.

New in version 10.0

  • New Graphic user interface
  • Data management based on XML database
  • Completely integrates Structural calculations, Fluid and Multiphysics analyses and Coupled Fluid-Structure Interaction problems
  • New Start-Data window to easily define the type of the analysis to be done
  • Geometrical and mesh data can be sorted in groups and layers

  • Fluids and multiphysics solver
  • New pressure stabilisation algorithm
  • Improved turbulence boundary conditions on bodies
  • Steady state algorithm is enhanced
  • Improved Law of the Wall models
  • New utility to calculate flow through a cut (in postprocess)
  • New Tcl interface tools allowing to interpolate data from one mesh to other
  • New boundary layer mesh generator

  • Coupled Fluid-Structure Interaction
  • (One way) Static Fluid-Structure coupling for 3D beams, shells and solids
  • (One way) Dynamic Fluid-Structure coupling for 3D beams, shells and solids
  • Thermo-mechanical analysis for non-conformal meshes
  • Structure - Generic PDEs multiphysics coupling
Release Note Tdyn