Meshing Techniques in Abaqus: Part 1- 3D Element

This video explains an advanced technique that is very helpful to enhance computational time without losing model accuracy. The method is useful for 3D models with critical areas such as models with contact. The technique needs partitioning the face then using cell partitioning to divide the part into more components. Next by using the sweep technique the element size would increase in X, Y, and Z directions. This is a very beneficial technique to use small element sizes for the areas with a high-stress gradient and the larger elements for the far region. To have a better understanding of the procedure, the sweep profile and sweep path are explained in a PowerPoint slide.
The element size is a key factor in large simulations as doubling element size would lead to reducing the computational time to 1/8 for standard models. This ratio will be larger for explicit models as it affects the incerement time as well. To learn more you could watch this series of videos about explicit models.

When it comes to biomechanical models the story is different. Since the geometries are complex it is very important to define very fine element sizes for contact regions. for the contact areas, we need to make sure we are using the right ratio for the master and slave elements. Otherwise, we will face errors as was explained in this video:

There are many techniques to increase element size for the far region to save time. Each is useful and we will cover them one by one. in these series of videos.

The video covers the following contents:
0:00 Intro
0:50 Partitioning for mesh
2:20 Sweep mesh
4:00 Defining seeds for each edge
5:52 Ending

Music by Wavecont,
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[kinuschi]

Thank you for the helpful technique!
I will try to apply this to my simulation model.

[bqudswt]

Hi sir, thank you so much for sharing such type of very informative video. I am currently working on a simulation for thermo-mechanical analysis, when i go for mechanical analysis, getting this type of error;

The volume of two elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.

Plz suggest a solution for it. Thank you.

[franckrksc]

Cool! How should I know about which way I have to divide the model into partition ?

[KaarthicKaundabalaraman]

How can you help me in getting the model meshed as per the reference model

[suhaibrasul]

Sir i'm getting this error please tell what should i do?

The volume of 756 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.

[hensem]

Hey can i send you my model and you do the meshing part?