Fender Design - Wheel Arch Challenge

Wheel Arch in Fender:-

• The arch is the semi-circular part of the fender positioned above the wheel of the vehicle
• The fender design must be in such a way that it must shield wheels and protect both passsengers copartment and pedesterian from mud and water which get projected due the speed of the car.
• For different countries the standered for the design are defined by the country.

Objective:-

The objective of the wheel arch challenge is to calculate the wheel arch area and prove whether the given fender of car will pass the European standards or not.

European Standards For Wheel Arch:-

Procedure:-

1)sketch:-

The 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.

Clearance value:-

1)Measuring "L"for given wheel and fender at

1)SB:-

The value of "L"at SB=10mm.

2)SA:-

The value of"L"at SA=9.9490mm.

3)SC:-

The value of "L"at SC=0.1139mm.

4)SD:-

The value of"L"at SD=2.887mm.

5)SE:-

The value of"L"at SE=5.997mm.

Table of "L" value:-

SECTION	CLEARANCE VALUE "L"	RESULT (L≥10=PASS,L<10=FAIL)
SB	10	PASS
SA	9.9490	FAIL
SC	0.1139	FAIL
SD	2.887	FAIL
SE	5.997	FAIL

From this data of table we can say that the Fender doesn't pass the European standard because it's fails at section SA,SC,SD and SE.

A)Obtaining the value of clearance "a"for wheel guard requirements:-

1)Finding the value of "a"at line 30 Degress forward from centre vertical axis of the wheel.

The value of"a"at line 30 Degress forward from centre vertical axis of the wheel=48.62mm.

2)Finding the value of"a"at line 50 degress rearward from centre vertical axis of the wheel.

The value of "a" at reward axis of the wheel=43.35mm.

Table for"a" value:-

SECTION	ANGLE(in deg.)	CLEARANCE(mm)	RESULT (a>5=Pass,a<5=Fail)
SB	30	48.62	PASS
SC	50	43.35	PASS

The clearance value obtained at SB and SC it passess the european standards.

Wheel arch area:-

Wheel Arch Area=24432.93mm2

CONCLUSION:-

From the above result obtained,we can say or conclude that the given fender dosen't pass the eurppean standards.The stayling team is required to modify the stayling surface of the fender such that the clearance "L"at sections must be greater or equal to 10mm by increasing the curvature at those sections towards outside.