Fender Design - Wheel Arch Challenge

WHEEL ARCH CALCULATION

Wheel Arch calculation is to know whether the wheel is placed inside the fender. If the Wheel is located outside the Fender it create chips whle running and it cause the damages to the components and Pedestrian.

REGION OF WHEEL ARCH CALCULATION

• JAPAN REGION
• EUROPEAN REGION
• UNITED STATES REGION

JAPAN REGION

Each Region follows some standards according to their region road condition.

• Measure Clearance L of hub,tier, fender and cap of minimum 5mm gap in three different positions.

EUROPEAN REGION

• It is similar to the Japn region instead we add an extra line with 150mm of reference and a midpoint line between the 50 degree line and the 150mm ref line.
• The clearance should be of 10mm gap between the wheel and the Arch.

UNITED STATES REGION

• In the US region it should calculate for every 10 degree of the wheel arch area from beyond the 0 degree value. In US region also they are maintaining 10mm clearance between the wheel and arch.

WHEEL ARCH CALCULATION EUROPEAN STANDARD

In the above fender and wheel arch we have to calculate the clearance according to the european standards.

• Create an datum plane with outer edge of the wheel as a reference and create a sketch.
• Create a line horizontally of 0 degree to 180 degree and vertical of 90 degree.
• Draw a line to 30 degree and 50 degree respectively.
• With reference of 150mm from the 0 degree line draw an line which intersects with the point.
• Using Derive line command create an midpoint line between them.
• Create an intersection point for all the line to the projected outer edge of an arch.
• Next Project the all the points to the body and calculate the distance between the point on plane to the body.

CLEARANCE OF SB AREA

CLEARANCE OF SA AREA

CLEARANCE OF SC AREA

CLEARANCE OF SD AREA

CLEARANCE OF SE AREA

CALCULATION TABLE

REGION	ACTUAL CLEARENCE	STANDARD CLEARENCE	STATUS
SB AREA	10.00MM	10.00MM	CLEARED
SA AREA	9.9490MM	10.00MM	CLEARED
SC AREA	0.1139MM	10.00MM	NOT CLEARED
SD AREA	2.8875MM	10.00MM	NOT CLEARED
SE AREA	5.99773	10.00MM	NOT CLEARED

CONCLUSION

Hence the given fender arch model is not clearing the standard clearance value. We have to make changes in either Fender or Hood Design.