Fender Design Challenge

FENDER DESIGN

OBJECTIVE :

The main objective of this project is to design a fender using a new age design software - NX – CAD.

FENDER :

The main purpose of the fender is to prevent sand,mud, rocks, liquids and another road spray from being thrown into the air by the rotating tire.

TYPES OF FENDERS :

Full bumper type

Half bumper

Type Presently we are using the half bumper type , the reason for choosing the half bumper type is that when we choose the full bumper type the blank used for creating it is very large and also has the lot of wastage , but in the case of the half bumper type we have the possibility to reduce the scrap . This is what we called as scrap management

In half bumper type we reduce the usage of the steel material and uses the lots of plastic on the bumper which in term decreases the cars weight and increases the performance.

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

DESIGN METHODOLOGY :

GIVEN DATA :

Master section

• DESIGN 0F 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 fenderCowl top part consists 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.

DRIFT AREA MOUNTING

• 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.

SILL MOUNTING

DESIGN OF BUMPER MOUNTING AREA :

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

BUMPER MOUNTING

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.

PILLAR MOUNTING

• 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.

BAFFLE MOUNTING

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 :

• CONCLUSION :
• Finally design of fender is done with the help of NX-CAD software by following the master section.