Element direction in LS-Prepost
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Hello,
I am modelling wave propagation in 2D orthotropic shell elements. I am having some issues in figuring out the element direction. I get different element direction when I use (a) ElementTool-- Elemen Edit--Direction and (b) ElementTool--Identify--Element--Shell--Element Direction. I have also attcahed a figure showing element direction as given by both options and I am not sure which direction the solver uses. Any help regarding the issue would be highly appreciated.
Manoj Rijal
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Hello,
Thanks for the response. The model has many elements. All info would be too big. I have only included nodes and elements seen in figure. The model is composite with orthotropic properties. Red layer is 90 and brown is 0 degree oriented.Here is the info you requested. Please let me know if you need more info.
*NODE
$# nid x y z tc rc39969 4.993751 0.05625 0.0 0 0
39970 4.993751 0.059375 0.0 0 0
39971 4.993751 0.0625 0.0 0 0
39972 4.993751 0.065625 0.0 0 0
39973 4.99375 0.06875 0.0 0 0
39994 4.996875 0.05625 0.0 0 0
39995 4.996875 0.059375 0.0 0 0
39996 4.996875 0.0625 0.0 0 0
39998 4.996875 0.06875 0.0 0 0
39997 4.996875 0.065625 0.0 0 0
*ELEMENT_SHELL
$# eid pid n1 n2 n3 n4 n5 n6 n7 n8
38371 10 39969 39994 39995 39970 0 0 0 0
38372 10 39970 39995 39996 39971 0 0 0 0
*ELEMENT_SHELL_BETA
$# eid pid n1 n2 n3 n4 n5 n6 n7 n8
38373 11 39971 39996 39997 39972 0 0 0 0
$# thic1 thic2 thic3 thic4 beta
0.0 0.0 0.0 0.0 90.0
38374 11 39972 39997 39998 39973 0 0 0 0
0.0 0.0 0.0 0.0 90.0*PART
$# title
0_Laminate_10
$# pid secid mid eosid hgid grav adpopt tmid
10 1 1 0 0 0 0 0
*PART
$# title
90_Laminate_11
$# pid secid mid eosid hgid grav adpopt tmid
11 1 2 0 0 0 0 0*MAT_ORTHOTROPIC_ELASTIC_TITLE
0laminate
$# mid ro ea eb ec prba prca prcb
11.46000E-42.090000E7 1389000 1389000 0.0214 0.0214 0.55
$# gab gbc gca aopt g sigf
6940000 448200.0 6940000 0.0 0.0 0.0
$# xp yp zp a1 a2 a3 macf ihis
0.0 0.0 0.0 0.0 0.0 0.0 4 0
$# v1 v2 v3 d1 d2 d3 beta ref
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
*MAT_ORTHOTROPIC_ELASTIC_TITLE
90laminate
$# mid ro ea eb ec prba prca prcb
21.46000E-42.090000E7 1389000 1389000 0.0214 0.0214 0.55
$# gab gbc gca aopt g sigf
6940000 448200.0 6940000 0.0 0.0 0.0
$# xp yp zp a1 a2 a3 macf ihis
0.0 0.0 0.0 0.0 0.0 0.0 3 0
$# v1 v2 v3 d1 d2 d3 beta ref
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0*SECTION_SHELL_TITLE
Shell_Comp
$# secid elform shrf nip propt qr/irid icomp setyp
1 13 1.0 4 1.0 -1 0 1
$# t1 t2 t3 t4 nloc marea idof edgset
0.5 0.5 0.5 0.5 0.0 0.0 0.0 0
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Hello,
Thanks for sharing your input.
In Element Tools > Identify,
Elem Dir: shows the element N1 -> N2 direction.
Mat Dir: shows the material direction orthotropy (defined by the AOPT, BETA, etc parameters).
In Element Tools > Element Editing, the Direction option sets the direction of orthotropy axis 1 of the material.
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