Fender Design
AIM :The main objective isto design a fender using nx cad software by given 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.
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.
Car Fender Function
Fenders do not only cover the car tires. There are many functions that this component has, including:
1. Wheel Guard
Fenders are useful as wheel protectors from unexpected things that could happen on the road. This also applies to protecting pedestrians and other road users. The debris that comes from the street can potentially cause discomfort to others.
For example rocks, mud, or other liquids so they don't get thrown into the air. The debris will be stuck when the wheels are moving. As a result, driving becomes more comfortable and does not disturb other road users.
2. Protector of Scratch
The function of this one actually comes from the fender cover. This one part is the front cloth which is located on the right and left side of the fender. Its function is to protect the car when it is being serviced or routine check. The service that is carried out will not cause scratches, so that the car parts are maintained. Keys used for this service can cause scratches accidentally, requiring protection.
Car Fender Materials
Fenders are not only available in various forms, but the material used for fenders also varies.
1. Rubber
This material is very flexible in holding debris. Both debris entering and leaving the side of the car can be contained. This rubber material is usually combined with a metal bracket.
2.Polyurethane
Polyurethane is often referred to as PU which can be used as an optimal car protector. This material is made of rubber mixed with plastic. The hardness level is more optimal when compared to rubber. The advantage of this material is that it is more resistant to bumps. Also resistant to the risk of scratches while on the trip.
3. Steel
These steel fenders are very useful for protecting the car from unexpected debris. For example, from mud or rocks, so it doesn't easily enter the vehicle body. In addition, these debris also do not have the potential to hit other road users so driving remains comfortable
MOUNTING REGIONS OF FENDER
There are 5 mounting regions on the fender , they are
- A- pillar mounting
- Body mounting
- Sill mounting
- Bumper mounting
- Drip mounting
Master Section:
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.
Sill area mounting :
sill area mounting is a one of important mounting. The mounting is place at bottom of fender in such away that it will avoide NVH issue.
DESIGN OF BUMPER MOUNTING AREA :
Bumper mounting area is used to fix the plastic bumper to the fender with the help of the fasteners.In this mountingdart is povided to give additional stength
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
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 : Thus, all mounting areas for the fender designed from skin data and master section is done by following all design rules .