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