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Verification & Validation in LS-DYNA®


  • Pro­fes­sor Ala Tabiei

Verification & Validation in LS-DYNA®


This class aims to teach meth­ods and pro­ce­dures for val­i­dat­ing and ver­i­fy­ing sim­u­la­tion re­sults. To en­sure an er­ror-free fi­nal­ized de­sign, an­a­lysts must ver­i­fy the ac­cu­ra­cy of the FEA solver as well as val­i­date the re­sults against ex­per­i­men­tal tests and oth­er out­puts. This class is in­tend­ed for all LS-DY­NA an­a­lysts and any oth­er FE sim­u­la­tion en­gi­neers. Even though the pre­sen­ta­tion is geared to­wards us­ing LS-DY­NA, the meth­ods and dis­cus­sion are ap­plic­a­ble to any oth­er FE soft­ware.


  1. In­tro­duc­tion
  2. De­f­i­n­i­tions of ver­i­fi­ca­tion & val­i­da­tion
  3. Dif­fer­ences be­tween ver­i­fi­ca­tion & val­i­da­tion
  4. Vari­abil­i­ty in sim­u­la­tion re­sults
    1. Things you have con­trol over
    2. Things you do not have con­trol over
  5. In­tro­duc­tion to MPP
    1. MPP ver­sus SMP re­sults
  6. Ex­per­i­men­tal da­ta and lack of it
    1. Test re­peata­bil­i­ty
  7. Sim­u­la­tion re­sults on dif­fer­ent ma­chines
    1. Sin­gle pre­ci­sion ver­sus dou­ble pre­ci­sion
  8. Ex­per­i­men­tal out­puts for ver­i­fi­ca­tion & val­i­da­tion
  9. Ver­i­fi­ca­tion & val­i­da­tion
    1. Meth­ods
    2. Steps
    3. Pro­ce­dures
  10. Quan­ti­ta­tive ver­sus qual­i­ta­tive val­i­da­tion
  11. Val­i­da­tion met­rics
    1. Mag­ni­tude-Phase (MPC) met­rics
    2. Sin­gle-val­ue met­rics
    3. Analy­sis of vari­ance (ANO­VA) met­rics
  12. Mesh con­ver­gence cri­te­ri­on & ver­i­fi­ca­tion
  13. Use­ful out­puts
    1. d3hsp files
    2. mes­sag files
  14. Val­i­da­tion in the fre­quen­cy do­main