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Orthotropic orientation

Hi,

I am using the propertie /PROP/TYPE6 (SOL_ORTH) for an orthotropic material.

When I now set my skew_ID and Psi to 0 and Ip to 3, would the direction 1 have the same orientaion as the x-axsis of my global coordinate system?

And would the orientation of the direction 1 be the same as the x-axis of an local coordinate system when I choose a value of 0 for Ip and Psi and the skew_ID accourding to the local system?

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Altair Forum User

what is the solid formulation and Iframe value used?

if the Isolid is set to 1, 2, 12, 17 and Iframe set to 0, 1 then RADIOSS assumes global system and ignores the element system if Iframe is set to 2 element system is used.

Altair Forum User

I think it answers my question, thanks!
Isolid was set to 14 and Ismstr to 2.

Though my model explodes now.
I will upload it... again...

Altair Forum User

I am using a solid element, so Isolid 1, 2, 12 and 17 are not compatible?

Altair Forum User

Element formulation may depend on the material law. but in general if you are using 1, 2, 12, 17 with iframe set to 0, 1 then global system is assumed.

Altair Forum User

When I set Isolid to 17 my results look like this.
But obvious this makes no sence at all...

Altair Forum User

A nother thought came to my mind, is there a way to review the orientation?

Altair Forum User

you can use the below script to check the element orientation.

go to http://www.altairhyperworks.com/Script-Exchange.aspx and search for the script number.

Simon Križnik

Hi,

I have a similar query regarding orientation of orthotropic property /PROP/TYPE9 (SH_ORTH). There is an option to orient the property by reference vector. That is fine for flat surfaces, but how it works for more complex curved surfaces like spheres?