Dynamics and vibration
investigations

In dynamic calculations, inertia, strength, failure and other influences are taken into account as a function of time. This is done using appropriate calculation methods. The best-known calculations in the field of short-term dynamics are crash calculations from the automotive industry.

The following is a list of typical industries, topics and tasks in which calculation and simulation has established itself as a tool for short-term dynamics. If you cannot find your topic here, please contact us!

Perimeter protection / protection against moving objects

• • Computational evaluation of the stability of fences, gates, bollards and obstacles against vehicle impact. Increased toughness through targeted optimization of energy absorption with limited deformation and reduction of overall weight by exploiting dynamic material hardening.
  • Design and calculation of crash barriers to accommodate moving objects. Constructive implementation by us.
  • Testing the dielectric strength of housings for fans, engines, etc. (containment tests)
  • Evaluation of bursting chambers and testing machines and verification of safety and strength

Protection against explosions and pressure waves

• • • Evaluation of the load due to short-term pressure increase from explosion or deflagration. If appropriate, also by coupling the flow with the structure.
    • Shock calculations and calculation of shock-absorbing construction elements or other measures
    • Calculation of the transient pressure curves that occur depending on the geometry of the components if no measurement results are available.
    • Development of pressure-relieving, constructive measures and evaluation of their effects on the load / acceleration of the assembly
    • Explosion risk assessment in accordance with Machinery Directive 2006/42/EC
    • Constructive explosion protection in accordance with the Explosion Protection Products Directive (ATEX Directive)

Vibrations or resonances can reduce the performance of machines and systems or even lead to mechanical damage. This can represent a considerable risk. We recommend investigating the following topics as early as possible in the development phase:

• Seismic evaluation of machines. We provide our customers with proposals for reinforcement against horizontal loads and/or the displacement of natural frequencies. The calculation of seismic loads is usually carried out using spectrum analysis.
• We carry out modal analyses and frequency response analyses (harmonic analysis) to determine natural frequencies and resonance effects.
• Evaluation of the fatigue strength of oscillating structural parts.