Find nearby surfaces
Hi all,
Is there any command available to find surfaces which are very close to each other. I have 2 components and there are some locations where the surfaces are really close(like contacts), need to find these surface ids without any manual selection.
Answers
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Hi Vipin,
try using hm_collisioncheck (refer to hm help)
set output for mark_id_pene_surfs
you may need to set an appropriate thickness for surface component
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Hi tinh,
How do i assign thickness to surface? right now the hm_collisioncheck is returning all surface ids i selected initially.
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Hi VIpin
try assigning thickness to component storing the surface
Could you show your codes?
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Hi tinh
*createmark surfs 1 'displayed'
hm_collisioninit
hm_collisionentitycreate surfs 1 0 1 0 0 0 0 0 0
hm_collisioncheck 0 0 0 1 0 0
hm_collisionend
hm_highlightmark surfs 1 'low'right now my code looks like this. I cant find any option to assign surface thickness! how to do that?
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Hi Vipin,
maybe the example given in hm help is wrong!
Below code is working in my hm2017, please try it (T1 is thickness of surfs in comp1, T2... comp2):
proc p_GetContactSurfs {CompId1 T1 CompId2 T2} {
hm_collisioninit
*createmark surfs 1 'by comp id' $CompId1
hm_collisionentitycreate surfs 1 0 10 $T1 0 0 0 0 1
*createmark surfs 1 'by comp id' $CompId2
hm_collisionentitycreate surfs 1 0 10 $T2 0 0 0 0 1
hm_collisioncheck 0 0 0 1 0 0 0
hm_collisionend
hm_highlightmark surfs 1 low
hm_getmark surfs 1
}
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Hi @tinh
I am not getting any output, i think there is no thickness for surfaces in my model.
Please tell me how to update thickness for surface components.
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Really?
T1 and T2 are thickness values to apply to surfs
in my test:
comp1 (ID 1001) has surfs 1 2 3 4 5 6 7 8 9 10
comp2 (ID 1002) has surfs 11 12 13 14 15 16 17 18 19 20
I invoked:
p_GetContactSurfs 1001 1.0 1002 1.0
it worked!
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This command will assign thickness to the surfs
hm_collisionentitycreate surfs 1 0 10 $T1 0 0 0 0 1
in hm help, it says add 10 will add thickness to outside of surfs
maybe your surface normal is inward
could you try with number '30' - will add thickness to both inside and outside of surfs
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proc p_GetContactSurfs {CompId1 T1 CompId2 T2} {
hm_collisioninit
*createmark surfs 1 'by comp id' $CompId1
hm_collisionentitycreate surfs 1 0 30 $T1 0 0 0 0 1
*createmark surfs 1 'by comp id' $CompId2
hm_collisionentitycreate surfs 1 0 30 $T2 0 0 0 0 1
hm_collisioncheck 0 0 0 1 0 0 0
hm_collisionend
hm_highlightmark surfs 1 low
hm_getmark surfs 1
}
p_GetContactSurfs 1 1.0 2 1.0
Can you please try on this model, I dont know what is going wrong.
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Altair Forum User said:
proc p_GetContactSurfs {CompId1 T1 CompId2 T2} {
hm_collisioninit
*createmark surfs 1 'by comp id' $CompId1
hm_collisionentitycreate surfs 1 0 30 $T1 0 0 0 0 1
*createmark surfs 1 'by comp id' $CompId2
hm_collisionentitycreate surfs 1 0 30 $T2 0 0 0 0 1
hm_collisioncheck 0 0 0 1 0 0 0
hm_collisionend
hm_highlightmark surfs 1 low
hm_getmark surfs 1
}
p_GetContactSurfs 1 1.0 2 1.0
Can you please try on this model, I dont know what is going wrong.
No no Vipin, a critical bug at the second 'hm_collisionentitycreate', the last argument must be '2' instead of '1'
it is group id of surfs that will be pushed into hm_collisioncheck
I test your model, it return surfs 4 9 3 2, (thickness option 10 or 30 are all OK)
please try again and announce me
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Hey @tinh Thank you so much!!
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problem solved.
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