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LS-TaSC

About

LS-TaSC™--Topol­o­gy and Shape Com­pu­ta­tion--sup­ports both the im­plic­it and ex­plic­it solvers of LS-DY­NA®. Au­to­mo­tive cus­tomers use LS-TaSC to op­ti­mize topolo­gies in the pres­ence of si­mul­ta­ne­ous con­straints on im­pact, sta­t­ic, and NVH. Be­yond the au­to­mo­tive, it is a ful­ly fea­tured and gen­er­al pur­pose mul­ti­dis­ci­pli­nary topol­o­gy op­ti­miza­tion tool. The method­ol­o­gy is specif­i­cal­ly de­vel­oped to sup­port mod­els hav­ing mil­lions of el­e­ments with non­lin­ear physics: large dis­place­ments, con­tact, and non­lin­ear ma­te­ri­als.

General Capabilities

  • Sol­id de­sign us­ing first-or­der hexa­he­drons and tetra­he­dral el­e­ments
  • Shell de­sign us­ing first-or­der quadri­lat­er­al and tri­an­gu­lar el­e­ments
  • Glob­al con­straints
  • Mul­ti­ple load cas­es
  • Mul­ti­dis­ci­pli­nary de­sign con­sid­er­ing im­pact, sta­t­ics, and NVH load cas­es
  • Tight in­te­gra­tion with LS-DY­NA
  • Im­pact analy­sis fea­tures, such as eval­u­at­ing Head Im­pact Cri­te­ri­on val­ues, the True Me­chan­ics Sol­id /­ Void scheme, and el­e­ment dele­tion
  • Mod­els with more than 10 mil­lion el­e­ments

Methodologies

  • An­a­lyt­i­cal and/­or Nu­mer­i­cal De­sign Sen­si­tiv­i­ty Analy­sis us­ing a mul­ti-point scheme
  • Pro­ject­ed Sub-gra­di­ent De­sign Op­ti­miza­tion Method
  • Op­ti­mal­i­ty Cri­te­ria for Dy­nam­ic Prob­lems
  • De­sign Con­tri­bu­tion Es­ti­ma­tion
  • An LS-TaSC com­po­nent in LS-OPT en­abling com­plex de­sign schemes

Geometry Definitions

  • Mul­ti­ple parts
  • Ex­tru­sions
  • Cast­ing, one sided
  • Cast­ing, two sided
  • Sym­me­try

Post-processing

  • De­sign his­to­ries and an­i­ma­tions of it­er­a­tive op­ti­miza­tion re­sults
  • Re­sults vi­su­al­iza­tion and mod­el edit­ing us­ing LS-Pre­Post®
  • STL files of the fi­nal de­sign that can be ex­port­ed to CAD pro­grams