6
votes
Meshing of complex geometrical domains
While the other guys explained the theoretical framework behind meshing, the practice is markedly different and it is not at all automatic in industries where quality of mesh is of utmost importance ...
- 95
3
votes
Accepted
Are there other finite element types besides the usual?
Certain geometries can benefit from polyhedral elements or elements with edge degrees of freedom. I can think of three main developments in that direction:
1) Voronoi cell finite elements, e.g., ...
- 1,443
3
votes
Why does the mesh size affect my modal analysis results?
I am not knowledgeable to answer this question but to lead you to read this article, which says "In order to obtain greater number of eigenmodes (and natural frequencies as well) finer mesh of ...
- 8,084
3
votes
Why does the mesh size affect my modal analysis results?
I mean the purpose of modal analysis is not to acquire nodal displacements. Displacements are random.
I disagree with both of those statements.
Part of the reason for performing a modal analysis is ...
- 526
2
votes
Shell vs. solid elements for a fatigue analysis using FEM
It really depends a lot on your model and types of loads but here are some generalities:
Shell elements usually require a lot less computational work than solid elements. This means that you can ...
- 170
1
vote
What does mesh topology mean?
Depending on the context, mesh topology is the cell or mesh density and how it changes across the whole calculation field.
To get detail then the computational area is divided into cells - more cells ...
- 15.3k
1
vote
Turbulence model for low reynolds problem
I solved my problem. I refined the mesh. Part of the problem was the high aspect ratio of my cells, because my tube is very thin in comparison to the length. I have solved the problem laminar and then ...
- 93
1
vote
Accepted
Mesh part failed in solidworks issue
One important (and often neglected) parameter in FEM meshes is the aspect ratio. The aspect ratio is the measure of a mesh element's deviation from having all sides of equal length. A high aspect ...
- 24.2k
1
vote
Flat root spline vs filet root spline: what's the difference
According to ISO 4156-1:2005, the following definitions apply:
3.6
fillet root spline
spline having a tooth or space profile in which the opposing flanks are connected to the root circle (Dei or Die) ...
- 217
1
vote
Accepted
Flat root spline vs filet root spline: what's the difference
Fillet root splines have a smooth curve between adjacent teeth and the root diameter, flat root splines may not and will have a flat portion of tooth space between teeth. Fillet root teeth provide ...
- 2,347
1
vote
Accepted
Unable to do anything with the mesh imported from blender
You can convert it from a graphic body to a mesh body (use the command search at the top right of the screen), and then you can use the Boolean tools to affect it using other mesh bodies.
You will not ...
- 7,662
1
vote
Shell vs. solid elements for a fatigue analysis using FEM
Bottom Line is that either can be used successfully if properly applied.
The most appropriate has to do with:
the application and (e.g. symmetries in geometry vs. irregular shapes and loads)
what ...
- 24.2k
1
vote
What is a good method (equation) for locally refining a 1D grid at each end?
I'm assuming that your equation is only used to define the spacing from an end to the middle, after which you mirror it.
Instead of dx1, write L / N, where L is the total length. Now you have
x(i) ...
- 249
1
vote
Accepted
How to remove a 'mesh edit' item in ANSYS Workbench?
I figured it out. First right click your mesh in the project tree and then click "Clear Generated Data". Then, right click, say your "Node Move", there should be a "Delete", click "Delete", then ...
- 26
1
vote
Accepted
Efficient 3D mesh topology for CFD simulation of turbine blade
I modeled a vertical axis turbine back in 2010 in a two dimensional rotating reference frame in OpenFOAM with good results. I am not up to date with the new tools available, but you want to make sure ...
- 7,794
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