MESHING A BACK WHEEL PANEL OF A CAR USING HYPERMESH
OBJECTIVE:
- The main aim of this project is to mesh the back wheel panel of the car as per the quality criteria shown below.
- To assign thickness for the mesh elements.
QUALITY CRITERIA:
PROCEDURE:
- Selected the radioss user profile for durability analysis (say).
- Imported the back wheel panel model (.hm) file into the hypermesh GUI.
- Checked for any geometrical failure in the model as shown below, in order to attain good midsurface.
- Cleared the necessary topological failures using the tool: geometry-->quick edit (or) key fn+f11, as shown below.
- defeatured the unwanted surface fillets and edge fillets where the elements fail for minimum length after meshing.
- MIDSURFACE EXTRACTION:
- Here, the automatic midsurface extraction method is used.
- The automatic extraction method is done by using the tools: geometry-->midsurface-->auto midsurface with extraction option as offset+planes+sweeps, since the extraction is good when compared with the other options.
- Checked for the geometrical failures like free edges, surface duplicates, and irregular surfaces and cleared using quick edit panel, surface edit panel(shift+f9).
- The surfaces are splitted and combined into one surface, in order to attain good mesh flow.
- MESHING:
- The midsurface is meshed surface by surface using the tool: 2D-->auto mesh panel with the mixed type and element size of 5mm.
- The option tools-->check elements is used for the elements satisfaction to the given quality criteria.
- Some unsatisfied elements are cleared by using the tool 2d-->quality index.
- Some of them are cleared by the reverse masking technique and remeshing them.
- The options like translate, project, element edit, node edit, replace also used for better feature capturing.
- Checked for the presence of back to back trias, opposite trias, rotational quads, edge trias and cleared by remeshing the elements.
- Checked for the presence of free edges between the elements and cleared by increasing the tolerance value and replace option.
- The concentration of trias is greatly reduced using the option quality index-->cleanup tools-->drag tria element.
- Finally, smoothing is done for the better mesh flow.
- ASSIGNING THICKNESS:
- The component is measured for the thickness value by using the option distance (f4).
- The collector is created as per the uniform thickness value of 0.75mm and organized the components elements using the tool: tools-->organize (shift+f11).
- The property is created with P1-shell as card image and respective thickness value.
- Finally, assigned the property to the respective collector.
- The tool-2D detailed element representation is used to view the assigned thickness.
- Finally, saved the file.
RESULT:
Hence, the back wheel panel of the car is meshed as per the quality criteria and thickness is assigned to the 2D elements.
LINK TO VIEW THE MODEL: