Learning Forum

[gary_consolazio]

I would like to make use of the warped beam element formulation in LS-DYNA (ELFORM 11 and 12) but I?m having trouble locating examples to get efficiently started. I?ve found several past presentations where the element accuracy is demonstrated (e.g. for channel shapes, etc.), but no actual example files, or documentation of the main keyword cards.nCan someone provide some simple example/verification keyword files that demonstrate the use of these element formulations (11,12)?nThank you.nn

[Andreas Koutras]

Hello Gary,n1) Here is an example of the input cards of a type 11 beam element.n*PARTn$# titlenWARP BEAMn$# pid secid mid eosid hgid grav adpopt tmidn1,1,1n*SECTION_BEAMn$# secid elform shrf qr/irid cst scoor nsm naupdn1,11,1.0,-1,2n$# ts1 ts2 tt1 tt2 nsloc ntloc n0.0,0.0,0.0,0.0n*MAT_ELASTICn$# mid ro e pr da db not used n1,7.85000E-9,21000.0,0.3n*INTEGRATION_BEAMn$# irid nip ra icst k n1,0,0.0,2,2n$# d1 d2 d3 d4 sref tref d5 d6n10.0,1.6,30.0,1.0n*ELEMENT_BEAM_WARPAGEn$# eid pid n1 n2 n3 rt1 rr1 rt2 rr2 localn1,1,1,2,102n$# sn1 sn2 n23,24n*NODEn$# nid x y z tc rc n1,0.0,0.0,0.0,7,7n2,45.0,0.0,0.0n102,0.0,5,0.0,0.0n*NODE_SCALARn$# nid ndof n23,1n24,1n*ENDnn2) Here is an example of the section definition of a type 12 beam.n*SECTION_BEAMn$# secid elform shrf qr/irid cst scoor nsm naupdn1,12,0.0,1,2n$# stype d1 d2 d3 d4 nSECTION_02,10.0,1.6,30.0,1.0nnI hope this will help.nn