How to mesh lines automatically by using tcl script?

User: "mansin"
mansin
Altair Community Member
Updated by mansin

Hi ,

I wanted to mesh a lot of lines with variable lengths in model by using tcl script, but I found the sample script in help is not intelligent, for example

 

*createmark lines 1 15 18

*linemesh_preparedata lines 1 30

*linemesh_saveparameters 0 3 0 0

*linemesh_saveparameters 1 2 0 0

*linemesh_savedata1 1 5 0 0

 

The parameter 'density' in line 3 and 4 are manually assigned, and the 'segment' and 'density' parameteres must be strictly matched. If the length of each line are different, the density are also different. So, a lot of *linemesh_saveparameters commands are needed. It is not acceptable for this meshing scripting.

So, is there a way to mesh lines with constant element size?

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    User: "QuyNguyenDai"
    QuyNguyenDai
    Altair Community Member
    Updated by QuyNguyenDai

    If the standard command is not suitable for you, write yourself!

    Here's my script: 

     set elem_size 5; set elem_type 61;  *createmarkpanel lines 1 'Select Lines' set lines [hm_getmark lines 1] *linemesh_preparedata1 lines 1 0 $elem_type; set i 0; foreach line_id $lines { 	set len [hm_linelength $line_id] 	set num [expr int($len / $elem_size)] 	*linemesh_saveparameters $i $num 0 0; 	incr i; } *linemesh_savedata1 1 $elem_type 0 0; *clearmark lines 1;

     

    User: "mansin"
    mansin
    Altair Community Member
    OP
    Updated by mansin

    Hi, Q.Nguyen-Dai

    Thanks you very much for your sample script.

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    If the standard command is not suitable for you, write yourself!

    Here's my script: 

      set elem_size 5; set elem_type 61;  *createmarkpanel lines 1 'Select Lines' set lines [hm_getmark lines 1] *linemesh_preparedata1 lines 1 0 $elem_type; set i 0; foreach line_id $lines { 	set len [hm_linelength $line_id] 	set num [expr int($len / $elem_size)] 	*linemesh_saveparameters $i $num 0 0; 	incr i; } *linemesh_savedata1 1 $elem_type 0 0; *clearmark lines 1;

     

    when i am run this file their is error unknown entity type found what is this ?  what is element type 61?

    User: "Dinesh c"
    Dinesh c
    Altair Community Member
    Updated by Dinesh c

    element type changes from solver to solver. Please set which element type do you want.

     

    You can easily find available element types in hypermesh>1D page>element types

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