Fender Design - Wheel Arch Challenge
Wheel Arch:
Wheel Arch is the semi-circular part of the fender positioned above the wheel of the vehicle.
The design of Wheel arch of a fender should be such that it must shield wheels and protect both passengers’ compartment and
pedestrians from projection of water, mud and stones.
For the vehicle to has its use permit in different countries, the wheel arch of fenders must be compliant with the standards and
regulations set by the respective countries.
Objective of the Wheel Arch Challenge:
The objective of the wheel arch challenge is to calculate the wheel arch area and to prove whether the given fender of car will pass
the European standards or not.
European Standards for Wheel Arch:
1. The clearance "L" as shown in above fig at all the five sections SA-SA, SB-SB, SC-SC, SD-SD and SE-SE should be greater than 10
mm.
2. Wheel Guard Requirement: The value of "a" shall be more than 5 mm at a line 30° forward and 50° rearward from centre vertical
axis of the wheel.
4. Obtaining Results:
Sketch is drawn on the wheel face as per the European standards provided and projected on the wheel arch at sections SA, SB, SC, SD
and SE to measure "L", "a" and wheel arch area.
A. Obtaining the value of clearance "L"
a) Measuring "L' for the given wheel and fender at SB: 10.00mm
b) Measuring "L' for the given wheel and fender at SA=9.9489mm
c) Measuring "L' for the given wheel and fender at SC=0.1126mm
d) Measuring "L' for the given wheel and fender at SD:1.7423mm
B. Obtaining the value of clearance "a" for Wheel Guard Requirement:
a) Finding the value of "a" at line 30° forward from centre vertical axis of the whee
The value of "a" at line 30° forward from centre vertical axis of the wheel = 43.623 mm
b) Finding the value of "a" at line 50° rearward from centre vertical axis of the wheel.
the value is 38.0mm
results:
| location | L value | pass/ fail |
|
SA |
9.489 | FAIL |
| SB | 10.00 | PASS |
| SC | 0.11 | FAIL |
| SD | 1.74 | FAIL |
| SE | 3.5492 | FAIL |
| LOATION | ANGLE | CLEARANCE | PASS/FAIL |
| SB | 30 | 43.63 | PASS |
| SA | 50 | 38.0 | PASS |
CONCLUSION:
After analysis is done the fender according to european standards for wheel arc tells us that is required to do changes by styling team. changes need to be made at locations SA,SC,SD,SE for greater 'L' value.