AquaSim is a finite elements software developed for analysis of structures exposed to static and dynamic loading, with emphasis on solving problems involving environmental loads such as waves, current and wind. The program is suited for analysis where structural response, hydrodynamic loading and system dynamics must be considered together, including both flexible and rigid structures.
Structural analysis
AquaSim performs nonlinear finite element analysis of structures with large displacements and geometric nonlinearity. Both static and dynamic response can be analyzed in the time domain. Typical analyses include:
- Static and dynamic response
- Nonlinear structural behavior
- Large deformations
- Stress and internal force distributions
- Response simulations
Model test and AquaSim-analysis of spaghetti-net with lice skirt.
Loads
The software includes formulations for simulation of environmental loads and corresponding structural response, including:
- Wave loads
- Current loads
- Wind loads
- Combined environmental loads
- Hydrodynamic load-effects
- Hydrodynamic force correction for changing submergence
- Slamming loads and impact-induced forces
Distribution of forces in a classical aquaculture net.
These features make AquaSim well suited for structures where environmental loads govern the main structural response.
Coupled analysis
AquaSim is developed for analysis of coupled systems where interaction between structures and surrounding fluid is important. Coupled capabilities include:
- Fluid-structure interactions effects
- Added mass and hydrodynamic damping effects
- Diffraction and radiation effects
- Flexible- and rigid body system dynamic effects
FEM modelling
A range of specialized modelling element formulations are available, including:
- Beam and truss elements
- Shell elements
- Membrane elements
These capabilities allow for modelling of both conventional rigid structures and highly flexible systems.
Stability and dynamics
AquaSim includes formulations and tools for evaluation of structural stability and dynamical characteristics:
- Eigenvalue analysis
- Natural frequencies and mode shapes
- Buckling analysis
Typical areas of application
With its wide range of modeling capabilities and -analyses, AquaSim can be applied for structural evaluation of:
- Aquacultural structures
- Mooring systems
- Offshore and marine structures
- Floating systems
- Land-based structures
Engineering applications
AquaSim is well suited for design verifications, response analysis, optimization studies, failure assessments. The software combines nonlinear FEM capabilities with optimized functionality for marine and land-based structures exposed to environmental loading.