Tetra Mesh - Parameters String

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi all,

I have a question after reading the documentation:

for tetra meshing using tcl command *tetmesh the script needs to use strings containing various mesh controls and parameters, e.g. 'tet: ...', '2d: ...', 'size_ctrl: ...', and 'pars: ...' 

I am using following parameters in the last string 'pars':

 

 'pars: vol_skew=0.8  tet_clps=0.2  aspect=6 Skew=30 vol_ar=5'

 

 

However, when I run the script, Hypermesh simply fails to recognize this string, and terminates image/emoticons/default_sad.png' alt=':(' srcset='/emoticons/sad@2x.png 2x' width='20' height='20'>

 

*createstringarray 2  'tet: 35 $growth_rate 2 $max_size 0.8 2 0' '2d: $elem_order $elem_type 1 $elem_size_2d $min_size_2d 30 1' 'pars: vol_skew=0.8  tet_clps=0.2  aspect=6 Skew=30 vol_ar=5'

*tetmesh solids 1 0 elements 0 -1 1 3

 

For further reference kindly see the online documentation about tetmesh:

http://www.altairhyperworks.com/hwhelp/Altair/hw12.0/help//hwdref/hwdref.htm?_tetmesh.htm

 

Anyone with some hints to the reasons for failure of this string, kindly help.

 

Best regards,

Mubeen. 

 

 

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Answers

  • tinh
    tinh Altair Community Member
    edited October 2013

    hi Mubeen

    your string array has 3 strings

    so try replace '*createstringarray 2' to '*createstringarray 3'

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2013

    Hi tinh,

    thanks for the reply, I replaced ' *createstringarray 2' with '*createstringarray 3', but the problem is not resolved image/emoticons/default_sad.png' alt=':(' srcset='/emoticons/sad@2x.png 2x' width='20' height='20'> i.e.

     

    *createstringarray 3  'tet: 35 $growth_rate 2 $max_size 0.8 2 0' '2d: $elem_order $elem_type 1 $elem_size_2d $min_size_2d 30 1' 'pars: vol_skew=0.8  tet_clps=0.2  aspect=6 Skew=30 vol_ar=5'

    *tetmesh solids 1 0 elements 0 -1 1 3

    doesn't work either.

     

    I tried something strange, instead. I appended the quality parameters string directly to the *tetmesh command

     

    *createstringarray 2  'tet: 35 $growth_rate 2 $max_size 0.8 2 0' '2d: $elem_order $elem_type 1 $elem_size_2d $min_size_2d 30 1'
    *tetmesh solids 1 0 elements 0 -1 1 2 'pars: vol_skew=0.8  tet_clps=0.2  aspect=6 Skew=30 vol_ar=5'

     

    This way, there is no error shown by Hypermesh, but I am not sure if the string parameters were used by Hypermesh during the meshing.

     

     

     

     

    Altair Forum User said:

    hi Mubeen

    your string array has 3 strings

    so try replace '*createstringarray 2' to '*createstringarray 3'

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