Shipbuilding

Ship structures, onboard equipment, and land-based docking structures and maintenance equipment all require detailed design. Requirements are varied and include cost effectiveness, shock-resistance, leak-resistance, multi-functional/reconfigurable, stiffness/frequency spectrum, and homeland security considerations. These design constraints present particular challenges to the shipbuilding industry and necessitate careful consideration of design, function, materials, assembly, maintenance, and possible failure scenarios. The industry needs a complete simulation solution in order to fulfill these requirements within time- and budget-constrained design cycles, particularly when most shipbuilding projects are put out for competitive bids.

The Abaqus Unified FEA product suite from SIMULIA can play a role in these designs by helping to ensure that the structures, facilities, and equipment meet the mechanical and shock load requirements of ship and shipboard structures. Abaqus Unified FEA UNDEX and DDAM capabilities are particularly noteworthy as being modern capabilities that provide underwater shock and shipboard shock simulation capabilities.

Solution capabilities

• Modern, fast, linear dynamics capabilities for ship stiffness and frequency calculations
• Fully coupled fluid-solid frequency analysis using fast Lanczos procedure
• "Added mass" effect of exterior fluids
• Accurate modeling of interior fluid volumes
• Fast frequency response analysis of coupled systems using Abaqus/AMS
• Substructure capability for handling internal components efficiently
• Industry-leading interface to DDAM procedures based on Abaqus Unified FEA simulation
  • Graphical user interface to set up and perform DDAM
  • Advanced methods for closely-spaced modes
  • Embedded replay and report generation
• Integrated UNDEX capability
  • Fully parallel implementation of UNDEX in Abaqus/Explicit
  • Underwater explosion bubble model
  • Flexible, surface-based structural-acoustic coupling interface
  • Native incident wave loading feature
  • Advanced nonreflecting boundary conditions
  • High-order acoustic infinite elements in XPL
  • Embedded cavitation model using acoustic elements
  • Adaptive mesh (Arbitrary Lagrangian-Eulerian) displacement-based formulation for fluids near highly deforming structures