Products

Features

Modelling: 

• Time-dependent dynamic load systems for point loads, distributed loads and prescribed displacements (velocities, acceleration)
• Independent application of horizontal and vertical displacement (velocity, acceleration) components
• Absorbent (viscous) boundaries to absorb waves at the model boundaries
• Rayleigh damping (αR and βR) per material data set for soil layers and structures)
• Smooth meshes, to prevent numerical oscillations and internal reflections
• HSsmall model including small-strain stiffness, modulus reduction and hysteretic damping
• Upon request: UBCSAND liquefaction model (available as User-Defined Soil Model) 

Calculations:

• Automatic time stepping using dynamic sub-steps
• Selection of Newmark time integration scheme (αN and βN)
• Free vibration analysis
• Harmonic loads
• Import of SMC files for time-dependent dynamic loading

Results:

• Velocities and acceleration in addition to displacements
• Envelopes of structural forces and displacements
• Time-displacement, Time-velocity, Time-acceleration curves
• Switch from time-curves to frequency-curves using Fast Fourier Transform
• Pseudo Spectral Acceleration response spectrum
• Animations (creation of AVI files)

Applications:

• Single source vibrations
• Earthquake simulation
• Dynamic soil-structure interaction
• Evaluation of natural frequencies and resonance
• Embankment stability under dynamic loading
• Machine and traffic vibrations
• Impact loading
• Structural response under earthquake loading
• Racking of tunnel lining