Contact Modeling in LS-DYNA®

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  • You should have ba­sic knowl­edge of LS-DY­NA.


In gen­er­al, mod­el­ing con­tact in LS-DY­NA is straight­for­ward for many users and the typ­i­cal con­tact de­f­i­n­i­tions that are dis­cussed in the in­tro­duc­to­ry class to LS-DY­NA per­fect­ly suits their needs. But for ex­pert users, LS-DY­NA of­fers ex­ten­sive pos­si­bil­i­ties to en­hance con­tact mod­el­ling in their ap­pli­ca­tions. In par­tic­u­lar, LS-DY­NA has more than 70 dif­fer­ent con­tact types, and each type sup­ports nu­mer­ous op­tions and spe­cial set­tings. While this gen­er­ous se­lec­tion guar­an­tees ex­treme flex­i­bil­i­ty for the con­tact de­f­i­n­i­tion, it al­so re­quires a great deal of knowl­edge on the user’s side to make prop­er use of it.

This class pro­vides you with a sum­ma­ry of the pos­si­bil­i­ties and lim­its of fre­quent­ly used con­tact de­f­i­n­i­tions and their op­tions when mod­el­ing con­tact in LS-DY­NA. It fo­cus­es on a se­lec­tion of suit­able con­tact types for crash and im­pact dom­i­nat­ed prob­lems. Con­tact de­f­i­n­i­tions used in man­u­fac­tur­ing will be briefly men­tioned but the in­ter­est­ed user is re­ferred to the spe­cial­ized class­es on these top­ics. Dur­ing the class, work­shop ex­am­ples aid in ex­plain­ing the ef­fects of the dis­cussed con­tact types and op­tions on the sim­u­la­tion re­sults.


  1. Clas­si­fi­ca­tion of con­tact types in LS-DY­NA
    1. Node-to-seg­ment ver­sus seg­ment-to-seg­ment treat­ment
    2. One-way ver­sus two-way and sin­gle-sur­face treat­ment
    3. Beam con­tact
    4. Au­to­mat­ic con­tact
  2. Penal­ty ver­sus con­straint treat­ment
  3. Con­tact thick­ness
  4. De­f­i­n­i­tion of a con­tact key­word and avail­able op­tions
    1. Manda­to­ry cards one to three
    2. Op­tion­al cards A to F
  5. Tied con­tacts
  6. Per­for­mance, scal­a­bil­i­ty, & MPP op­tions
  7. Some re­marks on ro­bust­ness
  8. Trou­bleshoot­ing
  9. Cur­rent de­vel­op­ments in LS-DY­NA
  10. Best prac­tice for var­i­ous ap­pli­ca­tions
  11. Sum­ma­ry