Fender Design Challenge

Fender Design

Aim: Follow the given Master section to create the Drip Area, Sill mount, Bumper Mount and A-Pillar mount create your own design according to the Engineering standard that you learned in the class.

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 roads spray from being thrown into the air by the rotating tire. Fenders are typically rigid and can be damaged by contact with the road surface.

Sticky materials, such as mud, may adhere to the smooth outer tire surface, while smooth loose objects, such as stones, can become temporarily embedded in the tread grooves as the tire rolls over the ground. These materials can be ejected from the surface of the tire at high velocity as the tire imparts kinetic energy to the attached objects. For a vehicle moving forward, the top of the tire is rotating upward and forward and can throw objects into the air at other vehicles or pedestrians in front of the vehicle.

In British English, the fender is called the wing (this may refer to either the front or rear fenders. However, in modern unibody vehicles, rear fenders may also be called quarter panels.) The equivalent component of a bicycle or motorcycle, or the "cycle wing" style of wing fitted to vintage cars, or overtires on lorries which are not integral with the bodywork, is called a mudguard in Britain, as it guards other road users – and in the case of a bicycle or motorcycle, the rider as well – from mud, and spray, thrown up by the wheels.

What does the fender do?

The fender is designed to prevent debris from being thrown around from the tires and aside from that, is generally a decorative part of your vehicle’s body. A fender does have a purpose though, as it prevents damage to the sides of the vehicle and it makes the overall driving experience safer for the driver of the vehicle and for other vehicles around the road.

The fender is a body panel with a curved shape. The size of the part is somewhat larger than the wheel that it will house.

Where are fenders located on the vehicle?

The fender is located over the wheels of the vehicle. As such, there are four fenders on a typical vehicle: front right, front left, rear right, and rear left.

Types of Bumpers

Nowadays we use Half Bumper Design.

Master section of Fender Design

Location of Fenders

While designing Fender there are some very important Noise, Vibration, and Harness (NVH) factors that come into consideration for improving the design of Car fenders

This method is used for joining of Fender using Fasterns nowadays instead of using Brackets which create NVH

Drip area, Sill mount, Bumper Mount, and A-Pillar mount

Drip Area Mounting:

• It is the most important mounting unit of a fender. It is connected with the engine compartment and therefore a lot of design

constraints are to be followed while designing the drip area.

• It should have sufficient clearance from the front and rear end of the fender to accommodate the Cowl mounting region and the

Headlamp housing units respectively as shown in the figure.

Sill Area Mounting:

• Sill area mounting is mounting at the bottom of the car which the sill covers this bottom portion of car after fitting the fender for the aesthetic purpose of the car.

Bumper Mounting

• In this area, the bumper cover comes into contact and covers this portion of Fender mountings.

A-Pillar Mounting

• In this area, A-pillar will come into contact with fender upside mountings.

Splash/Baffle Area Mountings

Mountings:

In order to fix the Fender, Mountings are essential. In our design we classified these mountings in 5 areas, namely are

• Drip Area Mounting.
• Bumper Mounting.
• Sill Mounting.
• A-Pillar Mounting.
• Splash / Baffle Mounting.

Exact Location of Fender Mountings are as follows: