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Compressive Analysis

Aslan_20882

Hı everyone,

I want to do compressive analysis with optistruct.

My compenent is Sheell so I used to PSHELL card.

But the program want from me T parameter.

I know T is Thickness and shoul be greater than one. but I dont know is it component thickness or other somethink.

How do I adjust it.

Thank you.

. image.png.0c22fac74e1f2d5dcbefb7c2dfaf06c0.png

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Simon Križnik

Hi,

in the PSHELL property card the T parameter is the thickness and should be greater than 0. The thickness specified will be assigned to all shell elements in components referencing this property card. Property can also be assigned directly to elements by right-clicking the property in the browser and go for assign option.

<a href="https://community.altair.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.youtube.com%2Fembed%2FjAobfA1qwNM%3Ffeature%3Doembed">https://www.youtube.com/embed/jAobfA1qwNM?feature=oembed</a>

Alternatively, the nodal thickness can be assigned on CQUAD4 or CTRIA3 elements.

https://community.altair.com/community?id=community_question&sys_id=e296047a1b2bd0908017dc61ec4bcb4e

Aslan_20882

Thank you for your reply

ı share my model with you and show thickness.

it is may be T max value. İs it true?

I want to compressive analysis why I need T value .

Why is it use.

image.png.7f7ec56055c57d7045ed6742c9cc9fba.png

Simon Križnik

Glad to help.

In the model you shared the PSHELL property is applicable only to the two plates on either end. The lattice structure in between should be explicitly modeled with solid or beam elements. This model can not be simplified (homogenized) into a single layer of shell elements, due to shell elements being plane stress elements (no through-thickness stress).

What T max value are you referring to? There is no such parameter in the PSHELL card.

The thickness parameter assigns the missing third dimension to 2D (shell) elements.