TYPES OF MESHING

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 Hey guys,

Today we are going to talk about meshing, I know another meshing one blog yes... I know we already discuss some meshing concept but today we are exploring it a bit more... so let's start 

We know why we carry out meshing and what its advantages also we had discussed about the DOF and nodes, elements blah blah... if you don't read it I am providing the link here check it out

https://understandingfea.blogspot.com/2020/10/meshing-fem-and-types-of-elements.html


So the basic purpose to carry out is to make calculations at finite points.

We know that we have to carry out meshing for the various geometries and geometry can be different and complex. 

                Then what to do in such cases, Lets explore it we know that our FEA problem which we are solving is needed to be easy and not very much complex and, if you have a complex problem then we need to identify how can we simplify it...

We can simplify the problem for meshing by the types of geometry we have and by converting it into the various dimensions like the 3D problem can be solved by taking the problem in 1D. Many software is providing such types of functions to carry out...Like Ansys, Hypermesh...and etc

So meshing can be divided into 3 types based on geometry 

I) 1-D meshing

II) 2-D meshing

III) 3-D meshing

So, let's look one by one


I) 1-D Meshing

1D analysis refers to the application of finite element analysis on line elements, i.e. 1-dimensional models comprised of only 2 nodes. 1D analysis can be applied to 2D and 3D models by analyzing the individual line elements that form the models' finite element mesh.

When to use these 1-D elements 

This element is used when one of the dimensions of geometry is larger than the other two-dimensions.




In which the line element is used, And additional data like two-dimension taken from user e.g.cross section 

Types of elements used are: Bar, axisymmetric shell, Rod, Pipe, beam

Practical application: Shaft, Line, Beam


II) 2-D Meshing

This meshing is in use when the two dimensions are very large then the third dimension.



The element type used: Quad, Tria additional data is taken from the user is the thickness of geometry

Element type: Plate, Membrane, Plane stress, Thin shell, Sheet metals, etc

Practical application: Sheet metal parts, Plastic component, etc

We are going to discuss the Mid-surface in 2-D meshing which is very important in terms of carrying out the meshing in Softwares.


III) 3-D Meshing

This 3-D  meshing is used when all the 3 dimensions are comparable.



Types of element used: Tetra, Penta, Hexa There is no additional data required from the user

Element Type: Solid elements

Practical application: Gearbox, Engine Block, crankshaft


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