Fender Design - Wheel Arch Challenge

1) WHEEL ARC CHALLENGE :-

2) OBJECTIVE :- THE OBJECTIVE OF THE WHEEL ARC CHALLANGE IS TO CALCULATE THE WHEEL ARC AREA USING CAD MODELING SOFTWARE SIEMINS NX-CAD AND TO PROVE WEATHER THE GIVEN FENDER OF THE CAR PASSES EUROPEAN STANDARDS OR NOT.

3) INTRODUCTION :-

A) FENDER :-

Fender is the American English term for the part of an automobile, motorcycle or other vehicle body that frames a wheel well (the fender underside). Its primary purpose is to prevent sand, mud, rocks, liquids, and other road spray from being thrown into the air by the rotating tire.

The fenders are located over the wheels of the vehicle – two in the front right and left, and two in the rear right and left of your vehicle.

Modern vehicles today are equipped with fenders made from plastic, steel, aluminum, and modern plastic composites like thermoplastic and fiberglass. Usually, heavy vehicles like trucks, utility vehicles, and SUVs are equipped with metal or steel fenders, whereas passenger vehicles have plastic fenders.

B) WHEEL ARCH :-

The wheel arch is the semicircular part positioned above the wheel of a vehicle. The most important body change was that the front wheel arch was cut higher into the fender. Corrosion had occurred around the splash plate at the back of the wheel arch.

The shaped part of the bodywork of a car or other vehicle that allows the wheel to be accessed, and in the case of front wheels, enable them to be steered.

4) WHEEL ARCH REGULATIONS AND REQUIRMENTS FOR VARIOUS REGIONS :-

A) JAPAN REGULATIONS REQUIREMENTS FOR FENDER WHEEL ARC :-

1. MEASURE CLEARENCE L OF TIRE, HUB, CAP, AND FENDER IN THREE DIFFERENT POSITIONS WITHIN AREA K AND PRODUCE CLEARENCE CHECK CHART TO VALIDATE.
2. CLEARENCE MUST BE GREATER THEN 5 mm IN ALL THREE POSITIONS.
3. WHEEL GUARD REQUIRMENT :- THE VALUE A SHALL BE GREATER THEN 5mm AT A LINE 30 DEGREE FORWARD AND 50 DEGREE REWARD FROM THE CENTRAL VERTICAL AXIS OF THE WHEEL.

B) US STANDARDS REGULATIONS AND REQUIRMENTS FOR FENDER WHEEL ARC :-

1. MAKE CLEARENCE L CHECK DETAILS ON ALL THE POSITIONS FROM -20 DEGREE TO EVERY 10 DEGREE UPTO 180 DEGREES AND MAKE CLEARENCE CHECK TABEL.
2. ALL THE VALUES SHOULD BE GERATER THAN 5mm AT ALL THE POSITIONS TO SATISFY THE REGULATIONS.
3. WHEEL GUARD REQUIRMENT :- THE VALUE A SHALL BE GREATER THEN 5mm AT A LINE 30 DEGREE FORWARD AND 50 DEGREE REWARD FROM THE CENTRAL VERTICAL AXIS OF THE WHEEL.

C) EUROPEAN REGULATIONS AND REQUIRMENTS FOR FENDER WHEEL ARC :-

MEASURE CLEAREANCE L SECTION AT SA-SA, SB-SB, SC-SC, SD-SD, SE-SE AND PRODUCE CLEARENCE CHECK CHART TO VALIDATE THE EUROPEN REGULATIONS.

1. AT ALL FIVE SECTION CLEARENCE L VALUE SHOULD BE GREATER THAN 10mm TO SATISY EUROPEN REGULATION AND REQUIRMENT.
2. WHEEL GUARD REQUIRMENT :- THE VALUE A SHALL BE GREATER THEN 5mm AT A LINE 30 DEGREE FORWARD AND 50 DEGREE REWARD FROM THE CENTRAL VERTICAL AXIS OF THE WHEEL.

PROCEDURE:-

1. ACCORDING TO EUROPEN STANDARD , THE DESIGN FENDER AND WHEEL ARC SHOULD PASS THE WHELL GUARD REQUIRMENT PROCEDURES.
2. FIRST CREATE A PLANE WITH ORIGIN AS CENTRE OF WHEEL PLANE.
3. THEN CREATE SKETCH ON DATAM PLANE , THEN SKETCH HORIZONTAL AND VERTICAL LINES USING SKETCH ORIGIN OF WHEEL PLANE.
4. USE INTERSACTION OF WHEEL ARCH AND WHEEL.
5. THEN CREATE LINE FORWARD AT AN ANGLE OF 30 DEGREE AND REWARD AT AN ANGLE OF 50 DEGREE SNAPPING TO INTERSACTION LINES.
6. NOW, CREATE A LINE 150 mm ABOVE THE ORIGIN HORIZONTAL AXIS I.E. 0 DEGREE , THEN CREATE A LINE IN BETWEEN THE SC LINE AND THE SE LINE TO GET SD POINT.
7. NOW CREATE POINT SA, SB, SC, SD and SE AND PROVIDE ALL THE DIMENSIONS TO THE SKETCH TO MAKE IT FULLY DEFINED .
8. AFTER SKETCHING PROJECT THE INTERSECTION POINTS ON THE FENDER FACE TO CALCULATE THE CLEARENCE VALUE L.
9. THEN USE THE MEASURE DISTANCE TOOL TO CALCULATE THE CLEARENCE BETWEEN SKETCH LINES AND WHEEL ARC.

10. THE CLEARENCE BETWEEN SA AND WHEEL ARC IS 9.9490mm. SO, IT FAILS EUROPEAN REGULATION .

11.THE CLEARENCE BETWEEN SB LINE AND WHEEL ARC IS 10mm .SO, IT PASS EUROPEAN REGULATION .

12.THE CLEARENCE BETWEEN CS LINE AND WHEEL ARC IS 0.113949mm. SO, IT FAILS EUROPEAN REGULATION .

13.THE CLEARENCE BETWEEN SD LINE AND WHEEL ARC IS 2.8846mm. SO, IT FAILS EUROPEAN REGULATION .

14.THE CLEARENCE BETWEEN SE LINE AND WHEEL ARC IS 5.9973mm. SO, IT FAILS EUROPEAN REGULATION .

RESULTS:

REGION	REQUIRED CLEARENCE	ACTUAL CLEARENCE	RESULT
SA	10mm	9.9490mm	FAIL
SB	10mm	10mm	PASS
SC	10mm	0.113949mm	FAIL
SD	10mm	2.8846mm	FAIL
SE	10mm	5.9973mm	FAIL

CONCLUSION :- FROM THE ABOVE RESULT RESULT WE CAN CONCLUDE THAT THE GIVEN CAR FENDER DOES NOT PASS THE EUROPEAN REQUIREMENT AND REGULATIONS, AS THE MINIMUM CLEARENCE L BETWEEN THE FENDER WHEEL ARC AND WHEEL FOR VEHICLE AND PEDESTRAIN SAFETY IS 10mm AND THIS DESIGN DOES NOT MEET THE REQUIREMENT.