Week 12:Project 2-Meshing of Rear Wheel Holder challenge

AIM: Meshing of Rear Wheel Holder challenge

Target Element Length = 5 Units

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2 Units
6	Max. Length	8 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

DELETE THE SOLID

After importing , we change the geometry color mode to BY TOPO, we find that the model consist of solids, Which is not required for our further process.

So we delete the solid from the model which alos benefits in less time consumption for computing in hypermesh

After deleting the solid create a mid surface individually

We extract the mid surface using auto mid surface option.

1stly gonna create a mid surface for inner extract,

for that, right clicking on the inner extract part in the part list and selecting to make current and invisible all the other components.

After extracting the mid surafce for all the component for hood we need to rearrange/toggle the construction lines so that we get good mesh flow.

Some of the regions in the face of inner panel , outer panel, latch and hinge will be distorted exp. misaligned lines , unchecked faces, damagedface, non-washer face, etc.

we also create a washer split at the holes, so can obtain a proper mesh flow.

Distorted region will be removed by following the process (GEMETRY---QUICKEDIT---TOGGLE LINES) to hide the lines to avoid mesh error and process (Geometry-----quickedit---washer split).

Consider the size of these components to facilitate the meshing process,we can work on half of the component and refelect it later as they are symmetrical.this can be done by using duplicate option and selecting half the component

Addtionally need to toggle lines that would hinder mesh flow and use our best judgment to make sure that surface we create .

After mesh is created,we can clean the mesh using various tools.primarilary use element optimize tool,the drag tria tool and to extend,the swp edge tool.

repeat to next component also.

And reflect tool to create the other half.

Finally we can assign a thickness for each of our midsurface

Before meshing we need to set up given quality criteria as per the specified to create quality mesh and also about meshing parameter for every particular Rear Wheel Holder parts.

meshing process is done, The element size tobe 4 and mesh type mixed in auto mesh option.

Now after meshing there are so many back to back trias and quad elements that will formed so, wee need to optimized the quality of the element.

To optimize the element we can use the rebuilt option abd also remesh the elementof the particular.

This will remove all the element failure from mesh the mesh , as it is necessary to have proper mesh for analyasis.

As meshing is applied irregular elements will forms in some region of latch and hinge like triangular elements,rotating quadrialateral elements

To achieve that (2D---edit--element---split)command applied to convert triangular and quadrialateral element into smaller into small one.

command to pull triangular elements backward in oder to present elements as minimum a possible in faces of every part of Rear Wheel Holder model.

ALL mentioned quality criteria, mesh the component has followed and mesh is applied.