Week 6-Meshing of Hood Challenge

                                                          MESHING OF HOODS MODEL OF A CAR

AIM :

         To Midsurface and mesh the given components in the Hoods model of an car by using the given quality criteria and   -

target length .

OBJECTIVES :

1. To mid surface the given 4 components including , Inner extract , Outer extract ,Hinge reinforcement extract and latch .
2. To mesh the components by mixed option using given quality criteria .

PROCEDURE :

1. Import the model by FILE>>OPEN>>MODEL>>Hoods_model.hm>>Import .
2. Visually inspect the model for any free edges , non-manifold lines and other imperfections.
3. Turn ON the wireframe mode and check for geometric errors .
4. Click the Visualization options and enable suitable free edges and missed surfaces .
5. Reconstruct the free edges and missed surfaces .

    6. After geometric clean up we want to perform midsurfacing for the component .

    7. Go to Geometry>>Mid surface>>auto mid >>tick the extraction options>>select skin offset

        back to auto extraction>>select all the surface>>extract .

    8. Isolate the mid-surface from the model by isolate only .

    9. Analyse the mid-surfaced file for any errors or improper actions .

     10. Take mid-surface for the whole 4 components using skin offset option as the same .

     11. Give the given quality parameters to the model and target length .

          preferences >> criteria file settings

    

     12. Look for the mid surfaced geometry and toggle compressed lines and closer lines which will fail for min-length .

          Geometry >> Quick edit >> toggle edges >> select the lines to be suppresed .

    13. After this , mesh the component part by part by auto mesh option .

         2D >> Auto mesh >> select the surface to be meshed >> give element size = 5 >> mesh

    14. Mesh the entire component by this auto mesh option .

    15. Turn the By element quality mode ON and check for the quality errors .

    16. Rebuild the mesh if the mesh flow is poor and choose the best one with out quality errors .

          2D >> REBUILD >> Select elements >> rebuild .

    17. Check the mesh quality and improve the mesh using the following tools as per the requirements .

         2D >> Quality index >> clean up tools >> select the tools as per the requirement >> perform

    18. Select the required clean up tools and improve the mesh and clear for all quality errors .

NOTE * - As the number of nodes exceeds the limits in hypermesh student version ,the finished components and files are

              saved inside a compressed folder as a zip file .

CONCLUSION

Midsurfaced and meshed the given components in the Hoods model of an car by using the given quality criteria and   -

target length by using hypermesh preprocessor .