Week - 4 - 2D meshing for Plastic components

AIM:To create mid-surface and check for geomentry errors and create 2D mesh for the given plastic model.

WORKING PROCEDURE:

Import the model into ansa and analysis the geometry and check the properties

Do the geometry check up for the parent geometry and measure the distance of each property using Utilities and Measure.

Then extract using auto mid surface or by manual offset option in faces and extract mid surface for each and every property.

For the features shown below, auto mid surface has been used in the face option and entened to the respective surface and interected, Incase of unwanted surface should be deleted after intersection.

For bottel cap challange there are two threads so, for creating therad use curve midline, create a bottom midline and top midline, by using create surface planer option and extened it to the respective surfaces and toggle the unwanted line.

Extract the midsurface of the top area of the bottel cap by clearing geomentry and using topo for supresing unwanted lines and offset the upper suface.

After extracting midsurface properly, we should extend and intersect all the surfaces respectively and delete the unwanted surfaces and supress theos unwanted lines.

The feature below has sucessfuly by using auto-mid by takeing both sides and extened to the bottom surface.

After extracting all the mid surface of all the feature from the parent geomentry carefully all the should be extened respectively and intersected properly and unwanted should be deleted and also unwanted lines should be suppresed.

By Using classick mesh in mesh panal and using free and best mesh, mesh has been created for the midsurface and elements has to pass trough quality criteria.

Assign the quality criteria as given in the question. then find the elements fail for quality criteria and do the needful geometry cleanup or use reconstruct option in shell mesh.

Again check for geomentry and quality criteria.

LEARNING OUTCOME:

Basics of ANSA Software tools.

To do geomentry cleanup for the given model.

To Extract Auto and manual MidSurface and assign property and thickness.

To mesh the component satisfying Quality Criteria with better mesh flow.

CONCLUSION:

Geometry cleanup, mid surface extraction, and 2D meshing of the given hood model were successfully done. All the elements pass the quality criteria.