Tetra meshing

Altair Forum User

Hello everybody,

May I know whether it is necessary to project the mid nodes of second order tetra elements on the geometry. I have read it in the book 'Practical Aspects of FEA' that it is not acceptable if do not do so. 

If it is necessary then please tell me how can I project mid-nodes on the geometry. 

Thanks in advance

<?xml version="1.0" encoding="UTF-8"?>

tinh

I think it should be on geom because it will represent shape better.

When switch to 2nd, toggle the option 'mid nodes exactly...' on order change panel

But your primary nodes must be associated to geom first, otherwise use panel tool>project to project mid nodes to surfs

Rahul Rajan_21763

PFA screenshot for order change panel.

<?xml version="1.0" encoding="UTF-8"?>

tinh

/emoticons/default_cool.png' title='B)' /> thanks Rahul actually I want to post a similar image but i was so lazy to go to hot room and open computer, instead i lay in cool room and use gift phone to answer him. Is there any tiny hypermesh version that i can install on android?

Altair Forum User

Altair Forum User said:

PFA screenshot for order change panel.

<?xml version="1.0" encoding="UTF-8"?>

 

Thank you sir!  I want know whether is it mandatory to project the mid nodes (as it is said in the book that 'It is not acceptable if mid nodes are not on the geometry'). Isn't it that the shape of the elements will get of distorted? Does it create any problem?

Rahul Rajan_21763

Its not mandatory but if you dont project mid nodes , mesh will not be captured properly on geometry.In general area having this kind of mesh is fine but near critical region, it is good to have proper mesh.