Self contact in optistruct

tuan trinh

hi people,

at present, i am practing  about self contac in optistruct, but the result of simulation is not righ, that is why please help me, thank 

condition: hyper 2017

*both Part A and part B use material Fe, E 70 Gpa.

* i carry out many situation to self contact, but is not ok

-situtaion 1

Patten1
Card image: contact
Type:slide
Ssid : part a and part B
Msid: part a and part B
Morient: norm
Discret:S2S
Trach:Consli

-situtaion 2

Patten2
Card image: contact
Type:slide
Ssid : part a and part B
Msid: part a and part  B
Morient: norm
Discret:S2S
Trach:Finite

Patten3
Card image: contact
Type:slide
Ssid : part a and part B
Msid: part a and part B
Morient: norm
Discret:S2S
Trach:small

 

refence document

https://insider.altairhyperworks.com/wp-content/uploads/2018/10/TT-1328-OptiStruct-Self-contact-with-surface-to-surface.pdf

https://community.altair.com/community?id=community_question&sys_id=1966ccf61b2bd0908017dc61ec4bcba3

 

***special situtaion

when i change Discret:S2S to N2S, it can not running, 0 percentage.

>>> all situation have a result as NG, it has penetration although i have set self contact it

 thanks

 

anh the.jpg

Community-Pasted-Attachment-1623487123545.png

Community-Pasted-Attachment-1623487148157.png

Community-Pasted-Attachment-1623487265300.png

Community-Pasted-Attachment-1623487335321.png

send.hm

Adriano_Koga

please take care, as your green part is a shell mesh, and not a solid one.

You are calling it self-contact, but what you're trying to do apparently is simply regular contact between 2 parts.

Instead of selecting all elements as master and slave, break into 2 different contactsurfs(set segments): One for the green part, and another for the brown part.

But first of all correct your model, so that both are 3d mesh.

 

When you create as 'set segment'/contactsurfs, you will be able to see these pyramids, and they should point each other, in order to the contact to be identified without any further MORIENT options.