mac311111
New member
- Jan 30, 2012
- 1
Hello,
I have a thick composite material compared with in plane dimensions (around 40mm thick and 200x80mm in plane). I am trying to define the mat9 card to model it as an anisotropic material since I already have a hexa model with pretty high density (around 5 elements in out of plane direction) and local out of plane effects are important.
I have in plane properties and I can estimate out of plane properties, E33, NU13, NU23.
However, I do not know how to define Mat9 card.
I have made some calculations to define Mat9 as an orthotropic material, from engineer properties, but I cannot use orthotropic assumption because my laminate is not symmetrical nor balanced. It is a non symmetrical tape reinforcement over fabric and tape part. There are couplings everywhere (B and D).
Is is Mat9 card the Q matrix (stress=Qxstrain)?
How can I get Q matrix from lamina/laminate properties or Laminate ABD matrix?
Thank you,
I have a thick composite material compared with in plane dimensions (around 40mm thick and 200x80mm in plane). I am trying to define the mat9 card to model it as an anisotropic material since I already have a hexa model with pretty high density (around 5 elements in out of plane direction) and local out of plane effects are important.
I have in plane properties and I can estimate out of plane properties, E33, NU13, NU23.
However, I do not know how to define Mat9 card.
I have made some calculations to define Mat9 as an orthotropic material, from engineer properties, but I cannot use orthotropic assumption because my laminate is not symmetrical nor balanced. It is a non symmetrical tape reinforcement over fabric and tape part. There are couplings everywhere (B and D).
Is is Mat9 card the Q matrix (stress=Qxstrain)?
How can I get Q matrix from lamina/laminate properties or Laminate ABD matrix?
Thank you,
