Linear Dynamics and Fatigue Analysis

The dynamic behaviour of a structure depends on different aspects related to material properties, boundary conditions, loading, effects of inertial forces, environment ... . This section is dedicated to finite element simulation of structures submitted to time-dependent loadings with linear behaviour.

D2S offers services that cover the whole project from start to finish :

Vibration analysis of a separator on a steel frame

• Measurements: (see Monitoring)    
  • Eigenfrequencies & eigenmodes (modal analysis)
  • Vibration level
  • Signature analysis
  • Measurement of dynamic stiffness
  • Dynamic excitations (impact, shaker, …)
  • Telemetry  
  • …
• Numerical Simulations:
  • Real eigenfrequencies & eigenmodes
  • Complex eigenmodes & frequencies
  • Modes with fluid structure interaction
  • Free-Free structures
  • Pre-stressed structures
  • Transient analysis and forced responses (impact, harmonic, …)
  • Linear and non-linear modal superposition
  • Harmonic analysis
  • Seismic analysis
  • Propagation of vibrations in the soil (traffic, machinery, …)
  • Stochastic analysis (PSD-excitation)
  • Sensitivity analysis
  • Buckling analysis
  • ...
• Application domain:
  Dynamic analysis of rotating parts and analysis of th

  Fatigue analysis of rail guard system

  e vibrations transmitted to the foundation slabs of the machinery

Related to fatigue analysis

• Measurements:  (see Monitoring)
  • Fatigue testing 
  • Durability testing 
  • Measurement of dynamic load 
  • Rainflow cycle counting  
  • …
• Numerical Simulations: 
  • Stress intensity factors 
  • Crack initiation & propagation, rupture 
  • Fatigue life estimation
  • Application of different regulations (CODAP,...)
• Application domain:
  Any structure submitted to cyclic or dynamic loading

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