What does mesh independent mean?

What does mesh independent mean?

Mesh Independence: Following convergence, additional mesh refinement does not affect results. At this point the model and its results are independent of the mesh.

What is a mesh independent study?

A mesh independence (or grid independence) study is something an analyst can perform to determine the dependence of the results on the mesh density. One of the ways this can be done is by following the approach listed below: Isolate an area of interest on the geometry.

What is meant by mesh convergence?

This two-part article describes what might be one of the most overlooked issues that affect accuracy, namely; mesh convergence. This refers to the smallness of the elements required in a model to ensure that the results of an analysis are not affected by changing the size of the mesh.

How do you prove mesh independence?

The best way to check for a mesh independent solution is to plot a graph of the resultant monitor value vs the number of cells in your simulation. This is illustrated below where we have three results from our steady monitor points for the average temperature at an outlet.

What is mesh sensitivity?

The mesh orientation sensitivity is investigated by diametrically compressing a disc specimen of unstructured meshes from different angles. The computational efficiency of the three-dimensional fracture model is also studied.

How do I check my mesh independence?

What is mesh resolution?

The resolution of a surface mesh is the overall spacing between vertices that comprise the mesh. We present an algorithm that transforms a mesh with an uneven spacing between vertices into a mesh with a more even spacing between vertices, thus improving its definition of resolution.

What is grid independence?

The grid independence test is a process used to find the optimal grid condition that has the smallest number of grids without generating a difference in the numerical results based on the evaluation of various grid conditions.

What is coarse mesh?

Coarse meshes are often adequate to predict trends and to compare how different concepts behave relative to each other. However, you should use the actual magnitudes of displacement and stress calculated with a coarse mesh with caution.

What is mesh refinement in FEM?

Mesh refinement is an important tool for editing finite element meshes in order to increase the accuracy of the solution. Refinement is performed in an iterative procedure in which a solution is found, error estimates are calculated, and elements in regions of high error are refined.

How is mesh independence determined in a convergence study?

Mesh Independence: Following convergence, additional mesh refinement does not affect results. At this point the model and its results are independent of the mesh. A mesh convergence study verifies that the FEA model has converged to a solution. It also provides a justification for Mesh Independence and additional refinement is unnecessary.

How is mesh independence determined in finite element analysis?

By assessing convergence and demonstrating mesh independence. It doesn’t take much for a finite element analysis to produce results. But, for results to be accurate, we must demonstrate that results converge to a solution and are independent of mesh size. To begin, let’s define a few key terms:

Do you have to be independent of mesh size?

The results of an FEA model must be independent of mesh size. A convergence study ensures the FEA model captures the systems behavior, while reducing solve time. At XCEED we know that FEA can become the analytical basis behind costly or high-risk decisions. Our FEA results need to be 100% accurate and verifiable by others.

How can I use mesh to search PubMed?

Use MeSH to search MEDLINE®/PubMed® for medical literature and information. Click Next Page to page through the tutorial, or select a topic of interest using the navigation menu to the left. See also the video Branching Out: The MeSH Vocabulary and the Searching Drugs or Chemicals in PubMed tutorial.