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Subject: Re: Parameterizing Orthotropic Material in Workbench
Author: Srivatsan-K-Mgr-EDC-TICO-TPI
Date: 2008-04-19 11:11:53

Dear Harini,
I think rather than trying to specify the stiffness properties as
paramters,ply angles has to be optimised.

Regards,
K.Srivatsan,
Engineer,CAE,
Chennai.


-----Original Message-----
From: xansys-bounces_at_xansys.org [mailto:xansys-bounces_at_xansys.org]On
Behalf Of Deibler, John E
Sent: Saturday, April 19, 2008 3:42 AM
To: ANSYS User Discussion List
Subject: Re: [Xansys] Parameterizing Orthotropic Material in Workbench


Dear Nithya Harini,

As a Classic ANSYS user I am unable to offer advice on Workbench.
However, I am not surprised to hear that this is not an option for an
orthotropic material. You need to also specify Poisson's ratios - PRXY,
PRYZ, and PRXZ. See the Theory Manual 2.1.1 and also note the
distinction between "major" and "minor" Poisson's ratios. But most
importantly, note the requirement for a positive definite matrix (see
also Theory Manual 13.5). Therefore, one can not arbitrarily specify
the properties for an orthotropic material, so setting them up as
parameters is probably not all that useful.

Best regards,
John Deibler
Pacific Northwest National Lab

"All models are wrong. Some models are useful"

-----Original Message-----
From: xansys-bounces_at_xansys.org [mailto:xansys-bounces_at_xansys.org] On
Behalf Of Nithya Harini (RBEI/END2)
Sent: Friday, April 18, 2008 4:15 AM
To: xansys_at_xansys.org
Subject: [Xansys] Parameterizing Orthotropic Material in Workbench

Hello Everyone,

I am trying to run a material property optimization for a composite
structure.

I want to parameterize Ex, Ey, Ez, Gxy, Gyz and Gxz Values.

I am able to parameterize the Youngs' Modulus value for an isotropic
material.

But for an Orthotropic Material, no checkbox appears to enable
parameterizing.

Please let me know if orthotropic material property values can be
parameterized. If yes, please provide me the direction to proceed.

Regards,
Nithya Harini.H
----------------------------------------------
Robert Bosch India Limited
Coimbatore
Tel: +91 422 663 4666
BeQIK Be Better Be Bosch

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Posts possibly associated with message #92923AuthorDateScore
92899Parameterizing Orthotropic Material in WorkbenchNithya Harini (RBEI/END2) 2008/04/18 
92916Re: Parameterizing Orthotropic Material in WorkbenchDeibler, John E 2008/04/18 
92923Re: Parameterizing Orthotropic Material in WorkbenchSrivatsan-K-Mgr-EDC-TICO-TPI 2008/04/19