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

OBJECTIVE:

A back wheel panel (Floor panel) component is given for mesh and to got the quality output as per given quality parameters and then assign them the thickness.

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

Introduction

SIDE WHEEL WELL:

1. It is an additional tire carried in a motor vehicle as a replacement for one that goes flat, has a blowout, or has another emergency.

2. Although steel is the long-time incumbent in SWWs, for the past decade, European OEMS have been using increasing amounts of composite materials for this application to reduce weight and costs.

3. By virtue of their lower specific gravity, polymer composites havegenerally had the advantage of lighter weight parts vs. metals.

4. The spare tire is generally or almost all vehicles actually carry an entire wheel with a tire mounted on it as a spare rather than just a tire, as fitting a tire to a wheel would require a motorist to carry additional, specialized equipment

5. Traditionally produced in stamped steel, and more recently in aluminum, this spare wheel well (SWW, also known as a spare wheel baffle) is a large, heavy, tub-like component that also plays a role in vehicle structure and crash safety.

6. Because it is exposed to the elements, its underside is prone to corrosion

MODEL:

PROCEDURE:

The floor panel component is given for the meeting, the component has small parts that are saved in different component files which has been organized to the single whole component and remaining has been deleted.

Floor panel did not have a solid part, so directly worked on the topology cleanup, the panel has many missing surfaces and or the surface are overlapping, particularly for such case a surface has been masked and checked for the proper surface deleted unwanted surface and the unmasked them.

Small circles that will not meet the quality condition, so such surfaces are deleted and the Bigg circle has some glitched to the surface so they are deleted and recreated.

There are some minor issues in the surface which are deleted and created the new surfaces and toggled them properly. After getting the proper surface, deleting unwanted surfaces the geometry cleanup is done on the parent component.

Command: (Geometry + Quick edit panel]

Using Automidsuface for generating midsurface, But taking the auto mid surface, some of the surfaces are having glitches, so that all the parts are done offset.(Manual mid surface) from the parent component.

Command: [Geometry + Surface edit+ offset)

manual midsurface gave a perfect midsurface with out any errors on the surface.

To have the proper mesh flow while meshing the component the mesh is started from the right side top part of the component with the element size 5mm and following the elements with their trias management rule and quality parameters.

While meshing the components there are several fail elements at narrow edges or small surfaces, elements that are failing for angle quad, skewness, taper, min, and max size but fixing them as well there are unwanted trim surfaces which are toggled to have one single surface.

BY using cleanup Tools those quality issues are fixed and moreover, by using distance option we can increase the distance of minimumand maximum element failed elements.

After finishing the meshing, check for free edges by going tto edges tool and turn off the mesh and surface to watch the edges clearly, if there are any free edges then there will be no load transfer, So always check for free edges and rectify them.

After all create a property for the midsurface and assign the thickness.

RESULT:

The floor panel is the one component but has many several small parts and some surface are not offset properly in the manual mid surface due to that the element is having the warpage issue but they are fixed by "translate or moving" the nodes at the given direction, other issues the edges are narrow so they are fixed by toggling the line and getting at a better distance so the element will not fail. Overall the floor panel is capture with the quality result.

CONCLUSION:

Floor panel is the different concept of hypermesh which gives detail idea about meshing and how to follow the mesh quality and flow as per the given quality parameters, also the mid surface is an important concept that understood in both automatic and manually, as checking the quality of mesh there were many warpages but they fixed by several methods, finally getting the quality output of the floor panel mesh.