Assignment 1-2D Meshing Challenge

Hello sir,

Please find below attached link of Project/Assignment

https://skill-lync.com/student-projects/2d-meshing-of-components-using-hypermesh

TITLE: 2D Meshing of Components using Hypermesh

SUMMARY: Here, we have consider three different CAD Geometry whose geometry cleanup has been done followed by its midsurface extraction and meshing. Each model has been undergone different methodology to achieve desired mesh. Following are the objectives, introduction & procedures which were followed respectfully.

OBJECTIVE: We have been provided with three different CAD Models, whose geometry clean-up operation is need to be carry out followed by its Midsurface extraction along with its midsurface clean & ultimately executing 2D mesh with desired parameters as follows

Target Length	5mm
Min Length	3mm
Max Length	7mm

INTRODUCTION: Hyperworks is a powerful Pre-processor, Post-Processor & Analysis tool used in various industry for solving various Engineering problems. In this project, we are going to used pre-processor methodology for three different models on which geometry clean-up operation, Midsurface generation & Meshing has to be executed.

MODEL 1:

Below are the procedures that were followed in order to Case set up and Execution

PROCEDURE:

1. The geometry is imported in hypermesh userinterface & under GUI it is viewed as either topology or mixed inorder to see the noticeable red/yellow line which describes are abnormalities in model.
2. These abnormalities are then eliminated by provididng proper topology or toggel methodology under quick edit in Geometry toolbar.

Above figures show the difference, once the cleaup methodology is applied.

3. More than single surfaces on the model can be deleted using componenet delete entity, it appeares as a yellow line on model

4. The geometry clean up tool itself allows to perform various task ranging from adding, remoding points along with spliting geometry, toggeling, edges editing nodes, distance & many more.

5. Once Geometry clean up methodology has been done the Midsurface of the model is extracted using automatic midsurface tool.

6. After Midsurface is generated the model is ready for 2D meshing, the model itself is meshed with targeted mesh size as 5mm. The Mesh can be executed under 2D section toolbar from automesh. The Component is selected and meshed.

7. After various geometry cleanups and improvisation of mesh using diiferent methodology such as remesh, smooth effect, mesh style, the consistent mesh flow with minimal trias has been achived.

similarly,

MODEL 2:

PROCEDURE:

1. The second model is imported too, followed its geometry clean as first one in order to eliminate any abnormalities. Tools were used such as quick edit, toggle, filler.
2. Midsurface is extracted once the clean up operation is executed.
3. This model is provided with big holes, which are need to be precisely meshed, to do so, we have provide a washer surface of size 3mm around hole which can be meshed later without disturbing the dependent elements.
4. Once washer surface is provided the model is meshed with elemental size of 5mm & it is checked for any uneven mesh flow, trias. If there are they are elinimated quickly.
5. This geometry is symetric, which means te generated mesh can be duplicated and reflect on its opposite side i.e. mirror. It saves time by pasting the generated elements, instead of meshing the other part again.
6. After executing all above step we achieved a fully meshed model as well.
7. Quality Criteria can be visvualizeas follows,

lastly,

MODEL 3:

PROCEDURE:

1. The second model is imported too, followed its geometry clean as first one in order to eliminate any abnormalities. Tools were used such as quick edit, toggle, filler.
2. Midsurface is extracted once the clean up operation is executed.
3. Meshing is executed as earlier

RESULT & CONCLUSION:

1. All imported models has been undergone geometric clean up operations, where tools such as point removal, filler, toggeling, has been used extensively.
2. A number of tools & features such as reflect, defeaturings are also used.
3. Midsurfacing allows to extract a 2D surface , which is easy for meshiing
4. Execution of mesh along with improving it with proper mesh flow was our goal.