Project Description



  • Fixed offshore wind jacket for a 5MW turbine.
  • Transition piece design
  • Load conditions definition
  • In-place analysis
  • Fatigue assessment
  • Code check of tubular joints, punching shear, maximum allowable stress, hydrostatic collapse according to API, GL rules with Beam-check module (Ansys).
  • Pile design
  • Transport and installation design condition assessment of Jacket-type structures.Advance resistance calculations

PROJECT: GBF analysis

  • Hydrodynamic load calculations
    • Loads using morison equation
    • Loads using diffraction
    • Loads combining diffraction & morison method
  • Stability calculations
    • Port operations (harbour moves and dock operations)
    • Towing operations..

PROJECT: Dolwin 6

  • Topsides FEM structural analysis using Ansys.
  • Pile Cluster Analysis:
    • Analysis and strength verification of the pile clusters against In-Service ULS and ALS scenarios as per DNVGL and EuroCode code checks.
    • Extraction of the SCFs (Stress Concentration Factor) for input into fatigue analysis of the different weld connections
    • Grout connection of the pile cluster
Dolwin 6


Development of two identical topsides of two offshore grid connection systems planned as high-voltage direct current (HVDC) connections, located in the German North Sea at about 40m water depth and 100km from shore.

Finite Element Analyses with ANSYS (BID phase). Scenarios analyzed:

  • Global In-service Verification of the Topside, in-place condition
  • Global Pre-service Verification of the Topside, sea transport onto cargo barge and installation via SSCV lift.

Developed tasks:

  • FEM master model
  • Design inputs, loads and asumptions
  • Structural analyses by means of FE:
    • In-service. Inplace – ULS.
    • Pre-service. Sea transport onto cargo barge – ULS.
    • Pre-service. Installation via SSCV lift – ULS.
  • Stresses check to design codes as applicable
  • Support for structural design drawings development


  • Topsides FEM structural analysis using Ansys.
    • Technical support during the bidding stage
    • FEED and Basic structural design
      • Pre-Service
      • In-Service
      • Fatigue
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