Fender Design Challenge

Project :- FENDER DESIGN USING NX 12

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.

Sticly materials, such as mud, may adhere to the smooth outer tire surface, while smooth
loose objects, such as stones, can be 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 trie is rotating upward and forward, and can throw objects
into the air at other vehicle or pedestrians in front of the vehicle. Fender is a front outer side
member of a car, which covers the wheel side. It has so many small features with ups and
downs.

The Importance of car Fenders:

• The fenders are an intricate sheet of metal covering the wheel well of your car.
• Fenders are designed in a manner to provide resistance against wind and other roadside
  debris.
• When you travel on rough terrains tour vehicle might get minor scratches and dents which
  look no better. Frequent road bumps can cause your cars paint to chip off which needs a
  paint job done.
• The car fender are located on either side of the front and rear wheels. The front car fenders
  begin where the front door hinges run and end just before the bumper. The rear car fenders
  begin where the back doors close and terminate before the back bumpers.

Types of Fenders:

There are two types of fenders.

• Full Bumper Type
• 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.

Purpoes 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.

Aerodynamics : Smooths the car profile so you don't get a lot of drag off the uncovered
wheels. Some fenders are enclosed on the side for this.

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:

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.

SKIN DATA:-

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 Mouting Area:-

• Bumper Mouting Area:-

• A Piller Mouting Area:-

• Baffel Mouting Area:-

All Types of view of Fender:-

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