Fender Design

FENDER:

It is used to prevent the pedestrian and engine components of the car from sand , mud, rock, liquid. Fender design procedure has varied for different region.

TYPES OF FENDERS:

There are two types of fenders , they are

1) Full bumper type

2) 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 region of fenders:

They are five mounting regions:

• A-pillar
• Drip area
• Bumper
• Baffles
• Sill

Design of drip area:

In this area it will attach to the engine side comportments, I developed the drip area as per the design standard which is given the project.

I’ll give 250mm tolerance from the cowl part for develop the drip area. But in this design procedure mention about 200mm-300mm, so I didn’t violate that standards.

Developing the emboss as per my own design procedure. I gave the depth of the emboss is 5mm and 3mm edge blend, but we should give (3mm+thickness of the components). I can’t able to provide this blend radius because if we gave edge blend radius as per the standard need to provide more extended surface that could be merge with engine side components which lead cause of damage.

I provided two darts for strengthen the drip mounting because when car is moving which will generate vibration and noise it could cause damage of the component.

Sill mounting:

Sill mounting it placed bottom of the fender, it has connected in between both floor of the vehicle as well as bottom side of the door panels. M5 fastener used to fix the fender on the sill body.

Bumper mounting area:

Bumper mounting area is used to fix the plastic bumper to the fender with the help of the fasteners.it is same design constraint used to create this mounting.

Baffles mounting:

This will mount will attach to the rubber and it was fastened into the vehicle body. This will help to provide good gripping as well as reduction noise and vibration of the fender. It has locked on the fender by using clip fit type. They are mounted on the fender special type of locking clips by made of plastics.

A-pillar mounting:

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.

It was little bit difficult when design the mounting because of the curved surface. It cause uneven depth which will lead to improper edge blend. So I gave 9 mm depth for giving 3.75 mm radius of edge blend.

Conclusion:

Finally designed the fender by using NX CAD by following the give standard of master section.