Fender Design

AIM: -

To design a front fender of a car by following the given master section as per the design considerations of OEM.

FENDER:-

Front fender is a part of the vehicle that frames the wheel . the primary purpose of the fender is to prevent sand , mud , rock etc from being thrown away into the air by rotating tire . fender can be of two types , full bumper type and half bumper type . nowadays half bumper type fender is typically used . the cost of sheet metal blank is reduced as we can produce two half bumper type fender in single blank . this also leads to reduction of scrap .

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

Here we design 5 mouting area with using standards and by using given master drawing,

Let we analysis below master section I do the drip area mouting and other mounting will be design my style

1 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.

2 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.

3 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.

4 DESIGN OF BUMPER MOUNTING AREA :

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

5 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 .

FINAL VIEW OF FENDER DESIGN

CONCLUSION -

We have developed front fender with mounting points following the design parameters and master section.