Max and Min Mesh
Max and Min Mesh
(OP)
Hello,
Is there any way to define a Max and Min element size for the mesh. I can only aplly "Aproximate Global Size".
In Ansys i can define a min and max element size, (8 to 80 for exemple) and ansys will creat automatically a mesh with these parameters, putting smaller elements where necessary and bigger ones when possible.
Can i do this with abaqus ?
Thank u very much
Is there any way to define a Max and Min element size for the mesh. I can only aplly "Aproximate Global Size".
In Ansys i can define a min and max element size, (8 to 80 for exemple) and ansys will creat automatically a mesh with these parameters, putting smaller elements where necessary and bigger ones when possible.
Can i do this with abaqus ?
Thank u very much





RE: Max and Min Mesh
RE: Max and Min Mesh
How can I operate with min size control ?
If i want my mesh between 8 and 80, being 80 the Aproximate Global Size, what value should i put in min size control ? (i only can choose value from 0 to 1 why ?).
Thank u very much
RE: Max and Min Mesh
First, you define an approximate global seed. Then you define a deviation factor to specify the level of local refinement in regions of high curvature. To prevent tiny elements then you can specify minimum element size as either (i) a fraction of the global seed or (ii) an absolute value.
RE: Max and Min Mesh
I tried an aproximate global size of 15 and went perfect. But with this low value my mesh is too heavy and there is no need for this.
But, when i apply a global size of 50, and a min of 15 (absolute value), abaqus cant generate the mesh.
RE: Max and Min Mesh
RE: Max and Min Mesh
So my model has 2 is a reinforced concret with 2 Parts: Concret with steel inside.
What u can see in the picture is the concret part with the steel negative inside. In assembly mode i put the 2 parts together.
The steel part i can easly mesh, the problem is in the concret part. I just need a fine mesh around the steel negative, in the concret exterior faces i can have a large elements mesh.
Thanks
RE: Max and Min Mesh
RE: Max and Min Mesh
When i aplly a global seed of 15, with 0.1*15 min it´s all good. But if i put a global seed of 20, with a absolut min of 1.5 (iqual to the anterior) apears thhis image (see anex).
RE: Max and Min Mesh
RE: Max and Min Mesh
As it stands I don't see any problem in selecting only the internal edges and assigning local seeds to them. The problem with this though, is that away from edges then the mesh will try to meet the global seed requirements and thus you'll get a coarse mesh along some parts of the steel rods. To get round this you'd need to partition along the lengths of the circular rods, say at 90 degree intervals.
RE: Max and Min Mesh
RE: Max and Min Mesh
@Corus - I already imported just 2 parts from solidworks. The steel is merged into a single part. I just have 2 parts. I already tried to seed the steel edges but the same message keeps appearing "poor boudary conditions ...", and no mesh. The only way i can mesh the steel is assigning a global seed of 15 and specifie as min 0.1*15. Any change to this wont generate mesh.
Is there any way to mesh the all model as one ? Instead of 2 separate parts ?
Thanks !
RE: Max and Min Mesh
@eroque, why don't you merge the two parts you have now and retain the internal edges/faces. Then assign the different materials to the separate identities and mesh it as one part, applying smaller edge seeds to the internal steel edges.
RE: Max and Min Mesh
"You can select edges, faces, or cells to seed; however, Abaqus/CAE creates seeds only along edges.
When you select faces or cells to seed, Abaqus/CAE creates seeds only along the edges of the faces or
cells. In addition, you can select a set or surface to seed; as a result, Abaqus/CAE creates seeds along
the edges of the geometry contained in the set or surface."
RE: Max and Min Mesh
I tried with a more simple exemple and works just fine. Can you please guide-me in this process ?
Thanks