Fender Design Challenge

FRONT FENDER DESIGN

Objective : The main object of this project is to design the BIW(Body in white) of front fender using the fender skin data and master section as the into data by using NX CAD.

Introduction :

Fender is the american english term for the part of an automobile, motorcycle or other vehicle body that frames a wheel well. Its primary propose is to prevent sand, rocks, mud, liquids, and other road spray from being thrown into the air by the rotating tire. Fender are typically rigid and can be damaged by contact with the road surface.

A fender is a requirement for all cars and trucks. These fenders are there for important reasons and not just for coverings. What is a fender of a car – fender car part explained?

A fender is the part of a car, truck, motorcycle, or other vehicles that frames or covers a wheel well. Its main purpose is to prevent debris, rocks, mud, liquids, sand, and other road debris from getting thrown in the air while the tires rotate.

The “fender” typically refers to the front panel that covers the front wheels, and the “quarter panel” typically refers to the rear panel that covers the wheel that also includes the roof pillar. The “bumper” is the front and rear ends of a motor vehicle to absorb impact in a minor collision.

The fender car part is the body kit or body part installed on the left and right sides of the vehicle. Manufacturers usually attach fenders to the wheel arches. There are different reasons why they are a requirement in vehicles. One obvious reason is to improve the aesthetics of the vehicle

Primary Function of Fender

The main purpose why there are fenders on cars is that they shield the wheels and they protect the passengers, the pedestrians, and the other vehicles from stones, mud, liquid, and other debris that can fly in the air because of the speeding rotating wheels while the car is running.

Fenders Should Have a Firm and Rigid Material

To provide this kind of protection, fenders should have a firm and rigid material such as steel. If you use your car every day on rough roads, it will experience a continuous “attack” of all kinds of debris. In this case, you’ll end up with a damaged fender after a while.

Mud and other sticky dirt can also adhere to the smooth rubber surface of the tires. Other loose debris, such as stones, can temporarily embed themselves in tire treads or grooves as the tire rotates while driving your car.

As you drive your car, these foreign materials will be ejected from the tire surface and tread at high velocity as the tire imparts kinetic energy to them. While your car is running, the tires rotate forward and upward.

These rotary motions, especially at high speeds, will throw these foreign objects into the air. They may fly into the path of pedestrians on the roadside or at the front, or other vehicles on the road or the inner sections and components of your car.

Housings for Wheels

So, the primary purpose of the fender car part is to keep road debris of all kinds from being thrown around by the tires of your car. You can say that fenders are housings for wheels that contain or control road debris. If there is nothing that covers your wheels, road debris will always fly around when you drive your car.

This is why vehicles with big oversized tires are required by law to install not just fenders but fender flares. Fender flares are body kits that you can attach over the fenders of your vehicle.

How Car Fenders Offer Protection

Driving will be very messy if your car doesn’t have fenders that house the wheel wells. The tires of your car spin fast when you drive. As they rotate, they catch moisture and debris from the pavement and spray them into the air.

The tire’s kinetic energy ejects these foreign matters into the air at high velocities. As this thing is happening, the moisture and debris that fly in the air can cause the following to happen:

• Get other vehicles or pedestrians on the road side dirty
• Hurt pedestrians
• Scratch the bodies of other vehicles
• Cause minor, and even major damage to other vehicles
• These are some of the reasons why your car should have fenders. They catch the dirt, moisture, and debris and prevent them from hurting people and causing damage to other vehicles on the road. Fenders are there to contain these foreign materials within the confines of your car.

· Different Types of Fenders

There are two types of fenders.

1.Full Bumper Type

2.Half Bumper Type

Full Bumper Type :

This type of bumper is not commonly used because this design is more scrap producing one during manufacturing. The blank of steel or aluminum usedto produce this type has more wastages. This type is not economically good to manufacture.

Half Bumper type :

This types of fenders most commonly used. The con's of full bumper type is satisfied in this design, and the blank area of wastage while producing the part is drastically reduced by scrap management.

Advantages of Fender :

Cleanliness : Protect the car, occupants and passers by from items, water, mud, snow, ice, thrown off the tires as you drive.

Safety : Protects pedestrain from the wheel, e.g. its better to be it by a laterally moving fender than a rolling tire, keeps loose, streaming items from being wrapped up in a rolling wheel.

General Appearance : Looks better with fender, gives a finished look, looks more streamlined.

Front Fender Design :

The given master section to create the drip area and for the still mount, Bumper mount and A-pillar mount create your own design according to the engineering standard.

1.Drip Area

2.Sill Mount

3.Bumper Mount

4.A Pillar Mount

5.Splash/Baffle Mount

Design of Drip Mount Area :

Master Section To Fellow and Create Drip Design :

Skin Data :

It is most important mounting unit of a fender. Its 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 unit respectively.

From the master section we have optimize value for draft , drawing and assembly point to view. Such as distance from the engine comportment is 10mm, height of fender etc.

Design Criteria :

Embosses are provided to increase the strength.

Smooth curves are designed for easy manufacturing of panel.

Ribs are provided to drip area mount to give structual support and extra strengh.

Maintain extra 10mm from the flat surface for the fastner holes.

All fillets should maintain 2 or 3mm radius in most regions.

Thickness of fender is 0.75mm.

Drip Mounting Area :

Sill Mounting Area :

Bumper Mounting Area :

A-Pillar Mounting Area :

Splash/Baffle Mounting Area :

Different views of fender:

CONCLUSION : Thus, all moounting areas for the fender designed from skin data and master section is done by following all design rules .