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Trying to create quality elems check macro

Altair Forum User

Hi,

I would like to create a macro which check quality of elements.

I didn't find how to check an element for some specific values as aspect ratio, skew angle, or warpage.

Do you have any ideas to do that ?

Thanks in advance.

Regards,

Cya.

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tinh

Hi,

by following these steps:

delete documents/command.cmf file

press F10 /press 'aspect'

open command.cmf file and you will see how to check aspect

if you want to get aspect value of an elem, using hm_getentityvalue elems ID aspect 0 -byid

Altair Forum User

Thanks for your help !

Ok for the value, but how can I get the ID of incorrect elements ?

Because using 'save failed', and 'retrieve mark', I'm not able to get them.

tinh

if you want to get correct id, using hm_getsolverid

Altair Forum User

I use hm_createmark instead of hm_getentityvalue. If you review the documentation for hm_createmark you will find that there are some options to create the mark by a Data Name value, these options are:

'by value range' 'attribute_or_data_name value_lower value_upper'
'contains value' 'attribute_or_data_name value value_type'
'equal to value' 'attribute_or_data_name value value_type'
'greater than value' 'attribute_or_data_name value'
'less than value' 'attribute_or_data_name value'

Here is an example:


 hm_createmark elems 1 'less than value' 'jacobian 0.5';
 set elemList [ hm_getmark elems 1 ];

which get all of the elements with jacobian value less than 0.5.

For more information, read the hm_createmark and DataName documentation:

DataNames: http://www.altairhyperworks.com/hwhelp/Altair/hw11.0/help/hwdref/data_names.htm

hm_createmark http://www.altairhyperworks.com/hwhelp/Altair/hw11.0/help/hwdref/hm_createmark.htm

Edit: The ids of the elements obtained from the hm_getmark commands are the internal hypermesh id of the elements not the element number for the solver. In case you need also the solver element id use the command hm_getsolverid entity id, where entity is any hm entity in this case elements.