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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 ...
r13's user avatar
  • 8,227
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 ...
JohnHoltz's user avatar
  • 526
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., ...
Biswajit Banerjee's user avatar
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 ...
JC ME's user avatar
  • 170
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 ...
NMech's user avatar
  • 24.4k
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) ...
Burt_Harris's user avatar
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 ...
jko's user avatar
  • 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 ...
Jonathan R Swift's user avatar
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 ...
NMech's user avatar
  • 24.4k
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 ...
Solar Mike's user avatar
  • 15.9k
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 ...
Gesetzt's user avatar
  • 93
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) ...
elliot svensson's user avatar
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 ...
CLB's user avatar
  • 26

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