Exporting .k files for LS-DYNA

Coreform Cubit Creation and Modification
#1

When exporting .k files, the mesh does not include node sets and side sets for boundary conditions. I have attached a journal file exporting .k meshes from Coreform Cubit and an example of a similar mesh with the correct formatting.

#2

example_of_boundary_conditions_not_working_cylinder.jou (1.8 KB)

Excerpt from a Correctly formatted mesh below
# LS-DYNA Keyword file created by LS-PrePost(R) V4.9.1-08Apr2022 # Created on Nov-14-2023 (16:44:32)
*KEYWORD
*TITLE
$# title
LS-DYNA keyword deck by LS-PrePost
*BOUNDARY_SPC_SET_1
1
1 1
*SET_NODE_LIST_TITLE
NODESET(SPC) 1
1
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56
57 58 59 60 61 62 63 64
65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88
89 90 91 92 93 94 95 96
97 98 99 100 101 102 103 104
105 106 107 108 109 110 111 112
113 114 115 116
*PART
cylindersolid
1 1 1 0 0 0 0 0
*ELEMENT_SOLID
1 1 1 7 8 2 117 123 124 118
2 1 2 8 9 3 118 124 125 119
3 1 3 9 10 4 119 125 126 120

#3

Hi Kurtis,

How are you generating the boundary conditions? Can you include a simple journal file?

Thanks,
Karl

#4

I attached a journal file.

#5

Nodesets are included in LS-Dyna export. However, the following line is only included if you specify an FEA displacement constraint. You typically have to constrain the mesh to perform a valid analysis.

Note that nodeset and sideset import is not currently supported for LS-Dyna models.