Orthotropic Material Issue: Abs(nue) >= Sqrt(E1/E2) is not possible

Hello,

I am recieving the following error. I am attempting to plug in values for CLT timber (see screenshot).

  1. Material #0 ‘105 V’: Abs(nue) >= Sqrt(E1/E2) is not possible. May cause errors in exported models.

Any thoughts on what might be causing this?

Best,
Hugh

Default of nue12 is -1 so Abs(nue) = 1. E1/E2 = 950000/950000 = 1 so Sqrt(E1/E2) = 1.

Therefore Abs(nue) = Sqrt(E1/E2) which is not permitted.

From the Karamba 1.3.2 manual:

For nue12 the constraint |nue12| < sqrt(E1/E2) applies

Regards
Jeremy