Blast Simulation: FSI vs Load as Pressure

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SUMMARY

The discussion centers on the choice between using Fluid-Structure Interaction (FSI) or applying load as pressure for blast simulations on vehicles. TheSymbol seeks guidance on this decision, highlighting the importance of national vehicle impact standards that address impulsive forces. The UK codes specify applied loads, and there is significant research from TRL on this topic. LS-DYNA, a software known for its FSI capabilities, has recently introduced features for blast simulations, although it remains a relatively new option.

PREREQUISITES
  • Understanding of Fluid-Structure Interaction (FSI) principles
  • Familiarity with LS-DYNA software and its capabilities
  • Knowledge of vehicle impact standards and national codes
  • Awareness of TRL research related to blast simulations
NEXT STEPS
  • Research the latest features of LS-DYNA for blast simulations
  • Study UK vehicle impact standards and their implications for blast analysis
  • Explore TRL publications on impulsive forces and their applications
  • Learn about uncoupled vs. coupled simulation techniques in blast scenarios
USEFUL FOR

Engineers and researchers involved in vehicle safety, structural analysis, and blast simulation, particularly those using LS-DYNA for advanced modeling techniques.

TheSymbol
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Hi all,

Planning to do an Blast simulation on a vehicle.
Should I go for FSI or Use the load as pressure.
Please throw some light on the same.

Thank you,
TheSymbol
 
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Have a look at vehicle impact standards in your national code to see how they treat impulsive forces on barriers, bridges and other structures due to impact.
The UK codes state a specific applied load. There is much TRL research about this published.
 
This sort of thing is mostly still done uncoupled.
LS-DYNA does have FSI capability for blast, specifically, but it is rather new.
 

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