Fender Design - Wheel Arch Challenge
Fender Design - Wheel Arch Challenge
OBJECTIVE
Calculate the Wheel Arch gap at required points and check whether the car passes the European standard.
INTRODUCTION
Fig.1.1
EUROPEAN STANDARD FOR WHEEL ARC
Here, they instructed between the most large wheel arc intersection point and Fender arc intersection point is as "A" and Fender wheel arc distance is measured as CL L.
At all sections the value of CL L should be greater than or equal to 10 mm then only it will pass the standards.
Wheel guard requirement The value of a shall be more than 5mm at 30 degree and 50 degree backward form the central axis of wheel.
Fig.1.2
Euopean Standard:
Fig.1.3
DESIGN OF WHEEL ARC AND FENDER
we have done the fende and wheel arc design by NX cad software.
First create center plane for wheel and make vertice and horizontal line for wheel from center point of wheel.
Project the Fender arc and wheel arc and project the line from center of wheel to given standard angles.
Make the intersection point for Fender projected arc and giver angle projected lines.
It is measure the distance or clearance of "L" and "a"
CALCULATIONS OF THE CLEARENCE
1) The measuring "L" for giver wheel and fender at L1 is 10 mm.
It was justified European standards.
Fig.1.4
2)The measuring "L" for giver wheel and fender at L2 is 9.9490 mm.
It was not justified European standards.
Fig.1.5
3) The measuring "L" for giver wheel and fender at L3 is 3.4505mm.
It was not justified European standards.
Fig.1.6
4) The measuring "L" for giver wheel and fender at L4 is 0.74155 mm.
It was not justified European standards.
Fig.1.6
5) The measuring "L" for giver wheel and fender at L5 is 5.9018 mm.
It was justified European standards.
Fig.1.7
RESULT OF FENDER CLEARANCE (L)
TABLE
| S.NO | SECTION | CLEARNCE (L) BY MM | RESULT |
| 1 | L1 (SA) | 10=10 | PASS |
| 2 | L2 (SB) | 9.9490<10 | FAIL |
| 3 | L3 (SC) | 3.4505<10 | FAIL |
| 4 | L4 (SD) | 0.741455<10 | FAIL |
| 5 | L5 (SE) | 5.9018<10 | FAIL |
From these above concluded calculations L2,L3,L4,L5 was not pass in the European standards so the above fender wheel arc was failure. if one section was also failure it will consider as total wheel was failure desing so i suggest to desing improve arc.
CALCULATION OF WHEEL GUARD
1) In this below fig.1.8 "a" value is 49.6439 mm it is justify the European standard value More than 5 mm.
Fig.1.8
2) In this below fig.1.8 "a" value is 38.0256 mm it is justify the European standard value More than 5 mm.
Fig.1.9
3) In this below fig.1.8 "a" value is 52.9657 mm it is justify the European standard value More than 5 mm.
Fig.2
CONCLUSION
* In the clearence of Fender arc and wheel arc, All sections does not satisfy the European standard so this above Fender desing is does not pass for next process.
* The above calculated Fender clearance values were not justify the minimum clearence value of 10 mm, so the desing will not satisfied to given requirments.
* At the same time, In the above Fender design , the "a" value is justified the given minimum value of 5 mm.