CALCULATING THE FENDER WHEEL ARC AREA : CASE STUDYING WHETHER THE CAR WILL PASS THE STANDARDS OR NOT

OBJECTIVE

The objective of the project is to measure the wheel arc area of the front fender of a car by using the model provided by the styling team. The wheel arc must be calculated by following the European standard regulations and the necessary feedback must be provided to the styling team for further development.

INTRODUCTION

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. The car has big high-definition headlights that extend to the wheel arch.

The wheel arc standard differs from region to region, to minimize the productivity time the maximum deviation values will be fixed which satisfies every region.

To avoid chipping of mud and stones like particles inside the engine compartment and helps in preventing the particles thrown towards the pedestrians so as to ensure their safety (Anti Chipping Criteria).

WHEEL ARC AREA STANDARDS

There are three types of wheel arc regulations followed which almost covers the entire region all over the world as per the conditions of the road construction in their respective regions.

EUROPE REQUIREMENTS

The value of ‘L’ must be more than 10mm. The point SA will be at exact 90 degree and the point SB will be at 30 degree anti-clockwise and the point SC will be 50 degree clockwise. The point SE will be coincides with the line 150mm above x-axis and the mid-point of SC and SE between 50 degree and line above 150mm will be the SD.

US REQUIREMENTS

For US regulation the ‘a’ value must be greater than 5mm. The clearance table must be checked from 100 degree to -100 degree on all positions.

JAPAN REQUIREMENTS

For japan standard the line at 30 degree anticlockwise to the 90 degree axis line and the line at 50 degree clockwise to the 90 degree line was used and the points A,B and C will be used to measure the ‘L’ from the outer most edge of the fender.

CALCULATING THE WHEEL ARC AREA

By using the European regulation the wheel arc area for the given styling surface will be calculated as below,

• First the lines will be drawn as per the requirements of the European standard and the outer most edge of the fender arc and then the outer most face of the wheel must be measured.
• The projected points will be named as SA, SB, SC, SD, SE and then the values must be measured.
• As per the European standard the value of ‘L’ must be greater than or equal to 10.
• The value lesser than 10mm will result in the failure of design.
• By using this study the styling team will get some suggestions which will help them to come up with a successful design with the necessary requirements.

‘L’ VALUE AT ‘SA’

‘L’ VALUE AT ‘SB’

‘L’ VALUE AT ‘SC’

‘L’ VALUE AT ‘SD’

‘L’ VALUE AT ‘SE’

COMPARISON TABLE

ISOMETRIC VIEW

CONCLUSION

Except the section SB all others failed to satisfy the minimum requirement of the clearance value ‘L’ which is 10mm as per European regulations. In addition to that the wheel protrudes outside the fender which was not at all acceptable so the entire design was failed and forwarding the report to the styling team to ensure the wheel arc area will be redesigned as per the requirements necessary.