Week 6-3D Tetra Meshing Challenge

Aim:

1. For the given MODEL 1, Create a Teramesh for Housing component with the following quality criteria.

TetraMesh Generation Method: 2D to 3D Conversion

Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units

Tet collapse: 0.15

2. For the given MODEL 2, Create a 3D Tetramesh with the following quality criteria.

TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh

Target Element size: 3 Units.

Tet Collapse: 0.15

3. For the given assembly MODEL 3, Create a 3D Tetramesh with the following quality criteria.

TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh

Target Element size: 4 Units.

Tet Collapse : 0.15

Obiectives :

1. To check the geometrical errors in the CAD model.
2. To check the CAD Topology and CAD Clean Up.
3. To apply 3d tetra mesh on geometry.
4. To achive mention qualitiy criteria and features of the model have to be captured properly with good mesh flow.
5. To mesh the each surface for better mesh flow.
6. To write a detailed report on meshing of MODEL 1 , MODEL 2 , MODEL 3.
7. To mention the result which gives a best mesh flow of the CAD model.

Geometry Cieanup : The first time to import the CAD model in the hypermesh then the model shows in the graphical region and here we orient the model . Toppology means how elements are bounded and connected to each other.We check compitability of grafics card for hypermesh means nodes and ponint visible or not when moving the model in the graphical area.Edge are of three types single ,double and triple surface sharing . Free edge means that edge which share only one surface,shared edge are that edge which share two surface, T JUNCTION EDGE are that which share three surface.T junction edge is a type of geometrical errors beacause it shares three surface which cause geometry incompitency in the model so it is required to remove from geometry for topology cleanup.some times small entites can be cause a problem if we have small face with sharp edge then surface may be failed for quality criteria therefore check our CAD model for every small entities remove before create a mesh for correct and efficient setup of our simulation required right topology.when we check the geomety then we find out free,shared, t junction edge and fix with a manually with the quick edit tools and apply quick edit tools for to correct the surface ,also increase the edge resolution to know actual gemetry of model.

MODEL .2 GEOMETRY CHECKUP

MODEL. 3

3D TETRA MESHING :

MODEL 1

2D TO 3D METHOD

Min size- 2 Max size- 7 Tet Collapse-0.15 Target element size- 5

CHECKS ELEMENT MODEL 1

MODEL 2

Target Element Size- 3 Tet Collapse- 0.15

MODEL 3

MESHING Target Element Size: 4 Tet Collapse: 0.15

Result And Final FEA 3D MODEL : We achive the target mesh parameter and quality criteria we have some off elements which failing for quality criteria and mesh flow is good.

MODEL 1

MODEL 2

MODEL 3

Conclusion : For given hood model we extract the mid surface and mesh for given mesh parameter and quality criteria for good mesh flow. .

MODEL 1

MY MODEL LINK IS GIVEN BELOW- https://drive.google.com/file/d/1uEJSG9M-kVW1KHcF5O6lpvoZCwFrZvSb/view?usp=sharing

Two model given in assets and 3rd model given in the link and you can dounload.