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Structure Work Hardening Effect HYCRASH

[Introduction] Car Interior parts supplier

Knee bolster strength analysis

Knee bolster, which is design to absorb crash energy, is expected to decelerate drivers/passengers pushing their knees strong and tenderly enough. To achieve this requirement, to get to know the accurate force - displacement property is very important. Here, HYCRASH was adopted to calculate residual strain and thickness distribution before the strength analysis. It can be seen that the strength analysis with HYCRASH has got much higher correlation with the test.

Company profile
  • An automobile interior parts manufacturer
  • Industry : Automobile interior parts manufacturer (Anonymous company)

The knee bolster is one of the occupant-protecting parts, intended to absorb the shock when the knee of the occupant is subjected to a load from a crash and to rest the occupant’s lower body.

Knee bolster Knee bolster

Achievement

Knee bolster is one of the occupant-protecting parts, being subjected to a load from the knee of the occupant at the crash to absorb the shock and to rest the lower body of the occupant. The anonymous company used HYCRASH to optimize the energy absorbing design, the F-S property, and performed strength analysis with work hardening by LS-DYNA. The simulation result with the effects from work hardening could successfully improve the accuracy of the estimated value of the F-S property.

Test set up and deformation Test set up and deformation

the residual stress calculated by HYCRASH the residual stress calculated by HYCRASH

Strength analysis(LS-DYNA implicit) and test Strength analysis(LS-DYNA implicit) and test

Case studies

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  • *LS-DYNA is a registered trademark of Livermore Software Technology, LLC, United States.
  • *HYSTAMP is a registered trademark of JSOL Corporation.
  • *HYCRASH is a registered trademark of JSOL Corporation.
  • *Some models posted on this site are provided by NCAC/GWU.
  • *Product names and service names are the trademarks or the registered trademarks of their proprietors.
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