Fender Design

Fender Design

OBJECTIVE

To develop the front fender using Nx cad following the design parameters.

FENDER

It is an aesthetic component/part of a car that frames the wheels. Prevention of sand mud particles, and other road contaminants from being thrown into the engine compartment and also to the pedestrians by the rotating tires are the main purpose served by the fenders.

The front fenders are separate components whereas the rear fenders are integrated with the body sides.

Car fenders are the curved panels that cover the wheels on the side of the car. They are typically made of metal or plastic, and they serve a number of important functions, including:

• Protecting the tires and brakes from mud, rocks, and other debris.
• Preventing water and other liquids from splashing into the engine compartment or passenger cabin.
• Improving the aerodynamics of the vehicle.
• Adding to the overall appearance of the vehicle.

Most cars have four fenders, one over each wheel. However, some vehicles, such as sports cars and off-road vehicles, may have different fender designs. For example, sports cars often have fenders that are more aerodynamic, while off-road vehicles may have fenders that are higher and wider to accommodate larger tires.

Fenders are attached to the car body by a number of screws or bolts. They are also typically connected to the hood, bumper, and headlights. This helps to create a strong and integrated body structure.

When fenders are damaged, they can be repaired or replaced. Repairing a fender is typically less expensive than replacing it, but it may not be possible to repair a fender that is severely damaged. Replacing a fender is usually a straightforward process, but it is important to use a fender that is specifically designed for your make and model of vehicle.

Here are some additional details about car fenders:

• Fenders are made from a variety of materials, including steel, aluminum, plastic, and fiberglass. The type of material used depends on the vehicle and the desired appearance and performance.
• Fenders can be painted to match the color of the car body, or they can be left in their natural finish.
• Some fenders have vents or openings that help to improve airflow and aerodynamics.
• Fenders can also be equipped with accessories such as mudguards and running boards.

TYPES OF FENDERS

1. FULL BUMPER TYPE: These types of fenders were used in earlier models of vehicles. They contribute to the major increment of the steel weight by just covering the front headlights with respect to the bumper region. The problem associated with this kind of fender is there is a lot of wastage in the blank and every inch of a material is a cost to the industry.

2. HALF BUMPER TYPE: These fenders are mainly used for serving the purpose of cost-cutting and reducing enough proportions of the steel wait resulting in a reduction of the weight of the vehicle slightly. They can be economically manufactured, i.e by slightly increasing the blank size, we can produce two fenders at a time.

MOUNTING REGIONS ON FENDER :

There are 5 mounting regions on the fender , they are

• A- pillar mounting
• Body mounting
• Sill mounting
• Bumper mounting
• Drip mounting

Master Section:

DESIGN OF DRIP AREA MOUNTING

• It is the important mounting unit of the fender it is connected with the engine compartment therefore the lot of design constraints are to be followed while designing the fender
• While designing the drip area we have to initially leave 200-300 mm for cowl top
• For placing the headlamp we have to leave at least 150 mm at the front while designing the fender
• Cowl top part consists pf wiper motor and its instruments
• Two darts are added on the longer side of the drip area in order to provide the stiffness and adds strength to the part . This helps the fender to not to vibrate and impact the forces outside of the fender during motion of the vehicle.
• Embossing are provided on the mounting to strengthen them during fastening.

DESIGN OF SILL MOUNTING AREA

Sill is the panel directly below the bottom of the door supporting the floor and may be used to combine the floor and the body The bottom end of the fender is mounted on the sill body for reinforcement of the fender panel thus the sill mounting position is designed with holes and emboss. M5 fasteners are used to fix the fenders on the sill body.

DESIGN OF BUMPER MOUNTING AREA

Bumper mounting area is used to fix the plastic bumper to the fender with the help of the fasteners

DESIGN OF A-PILLAR MOUNTING AREA

The A -pillar is the structural pillar that combines the body to the roof . this make the sides of the windshield rest front fenders are fastened to the A -pillar to form a robust structure.

DESIGN OF BAFFLE MOUNTING AREA

Baffle mounting or mudguard are clip fit type of mounting on the inner side of the fender arch over the Tyre. it protects the car engine compartment and pedestrians from causing injuries from chip out debris on the road when the car is in motion .they are mounted on the fender using a special type of locking clips which are made up of plastics .

APPLYING OF THICKNESS TO THE SURFACE

The thickness of 0.75 mm inward on the final sewed surface of the fender to the sheet metal parameters

DIFFERENT VIEWS OF FENDER

Purpose 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.

CONCLUSION:

Here, developed mounting flanges in Drip area, Sill mount, A pillar and Bumber with given design requirements.