Impact and high velocity impact

Download the PDF

For the analysis of high velocity impact (HVI) scenarios, Virtual Performance Solution allows you to analyze the dynamic behavior of materials or products under high speed impact. The simultaneous use of explicit and implicit in VPS is very welcomed by the Aerospace & Aeronautics industries for advanced structural dynamics and impact simulations.

• High velocity impact scenarios
• Industry validated design methodologies
• Multi-disciplinary compatibility
• Certification by simulation

Aerospace

Validated with the European Space Agency against experimental data for hypervelocity impacts, the module for shock and impacts within VPS supports the following simulation needs in the aerospace industry:

Space debris shielding

• Measure the response of matter under extreme strain rates and pressures.
• Use a range of suitable material models and equations of state describing the full range of the thermodynamic processes.
• Strengthen an effective protection of the satellites and space modules against arbitrary impacts with orbiting space debris
• Simulate the oblique impacts upon whipple and double bumper metallic and non-metallic spacecraft shields with the Smoothed Particle Hydrodynamics (SPH) option.

Spacecraft pyrotechnic separation

• Use a range of suitable material models and equations of state that describe the full range of the pyrotechnic separation process.
• Simulate the detonation process, rocket fairing rupture and associated shock propagation to the upper-stage payload section.

Satellite payload shock response and safety

• Simulate the high-frequency vibration response due to a short duration pulse, which typically affects satellite payload or vehicle equipment bay after the pyrotechnic cutting used to separate modules in spacecraft or rockets.

Aeronautics

Foreign Object Damage upon metallic and non-metallic components

• Simulate the high velocity impact response of primarily composite aircraft structures.
• Perform impacts simulation from birds, hail and stones.
• Benefit from a dedicated models library containing ESI's proprietary bird models for birdstrike simulation.

Crashlanding / Splashdown of Fixed and Rotary Wing Aircraft

• Benefit from design methodologies for aircraft survivability in crash developed through several European research projects (simulation techniques for both metallic and composite structures).
• Simulate aircraft crashlanding on hard or soft soil and helicopter splashdown.

Helicopter splashdown: simulation vs experimentation - Courtesy of project CAST, Westland and DLR

Onboard Passive Safety

• Perform the simulation of complex deformations a thin-walled aerospace structure can suffer under limit loads like internal explosions.

A320 crash survivability: experiment vs simulation - Courtesy of project IMD & EADS-CASA

Engine Blade Containment

• Perform the simulation of turbine engine blade containment thanks to predictive material models (like elastoplastic shells and solids with EWK* damage and failure) included.
• Use the Implicit module for the centrifugal blade pre-stressing initialization.

*ESI-Wilkins-Kamoulakos model

Defense

Performance of munitions with respect to explosion, cratering, kinetic energy penetration

• Munitions modeling and the simulation of kinetic energy penetrators.
• Model the detonation, the cratering in soil and the penetration/perforation of reinforced concrete.
• Evaluate the performance of kinetic energy penetrators.