Ply orientation, RADIOSS Block format 110

Altair Forum User

Hello,

 

I'm modeling a container with shell elements and composite material (Material Law 25) in hypermesh and Radioss block format 110 for an impact performance.

I applied to my model a property P10_SH_COMP (with a 0/-45/45/90 stack) for each faces of the box and assign a vector to give the default orientation for each face. 

But when I request the layer orientation in Hypergraph (with /ANIM/SHELL/PHI/ALL) , I obtain a weird result as you can see on the attached file. Some elements have -135° and others have 45° on the same face.

And this is happening for each face of the box. I checked the normals of the element in Hypermesh but all of them have the same direction.

 

Maybe you have the solution to my problem ? (This maybe not has an influence on the final result in term of stresses but could be a good idea to know what it's happening for further studies).

 

Thanl you !

 

 

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi ABIARD

 

Does your model have local system for orientation?

 

ANIM/SHELL/PHI outputs the angle between element system and direction 1.

 

Can you share your model using the dropbox link in below signature to see how it is modeled?

Altair Forum User

I sent you the model in the dropbox. 

And I didn't setup any system in my model, I just indicated a vector for the orientation by nodes.

Altair Forum User

Thank you for sharing the model.

 

I will look into this and will get back to you soon /emoticons/default_smile.png' alt=':)' srcset='/emoticons/smile@2x.png 2x' width='20' height='20'>

durukanbdilek

hi 

I want to change material orientation 

how to change it

note: I use P10 sh_comp for my model

Altair Forum User

Hi,

In /PROP/TYPE10 property card the number of layers is specified in the N field. Then the same number of field (phi) is open to input the angle of each ply.

Please review the sample property card attached.

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

durukanbdilek

NO IT IS NOT WHAT I ASKED

IN 2D, COMPOSITE - MATERIAL ORIENTATION IS HERE

HOW TO CHANGE MATERIAL ORIENTATION

Altair Forum User

Hi,

You can define a vector in this material card and based on this vector the orientation will be updated for the plies defined.

<?xml version="1.0" encoding="UTF-8"?>

durukanbdilek

ok thanks 

but in there, what is function of VX, VY and VZ

HOW TO MODEL WOVEN COMPOSITE

Simon Križnik

Vx, Vy and Vz are x,y and z components (global coordinate system) of a vector V which defines material orientation. Those are filled in automatically when you reference by nodes. 

 

Woven composite is modeled by inputting the same Young's modulus E11=E22 into material law definition.