Learning Forum

[hamsalekha]

Hi,

I wish to mesh elliptical disk with small thickness. The parameter that is used to construct  the elliptical disk is a = 5cm, b = 2.5 cm  and c = 0.1mm.

The elliptical disk is constructed using Solidwork software and imported to APDL in IGES format. The element type is set as MESH 200 and the type of mesh is set as 4 node tetra since volume mesh is required. However, the mesh is unable to be generated. Initially, the element edge length is set as 0.0001 for the above parameter and the warning is shown as in the figure below.

Therefore, the parameter was changed to c = 0.5 cm (the thickness is increased). The other parameters remain the same. However, there is a warning generated as shown in figure below. 

Thus, I tried with 250 no. of element divisions for the mesh value. And the error is shown as 

The no. of element division is further reduced to 100. And the result displayed in this form (figure below)

My question is how to generate a correct mesh for elliptical disk? Which parameter (a,b,c) has to be considered to set a correct value of mesh? Is there any formula that needed to be applied to generate a correct mesh for elliptical disk? And how to contact ANSYS support person to solve this issue? I also unable to use SmartSizing to change the mesh values.

[Manel40]

What do you mean by Correct Mesh ? 

May be mesh quality and size ? you must check mesh quality 

You can try sweep method for your geometry ,mapped surfaces for the two elleptical surfaces , insert inflation layers and refinnement.

 

Your geometry is not complicated ( there is not small edges or surfaces ) . In this case , you will be faced at hight propability of mesh failure.