Hood design-Week 2

Hood Desgin

Introdution:-

A car hood is also known as bonnet. Hood is assemble in front side of car's and it covers engine and in sports car boot space. Hood assembly consist of different parts that combine to be in vehicle.

1. Hood Outer Panel

2. Hood Inner Panel

3. Hinges assembly

i) Hinge hood side

ii) Hinge engine side

4. Latch & Striker

1. Hood outer Panel:-

Hood outer panel is upper metal cover which hold the inner panel and the inner give strength of outer panel.

2. Hood Inner Panel:-

Hood inner panel is inside metal cover which support the outer panel and it had diffrent design, embossed, mastic data & attached hinges and latch.

3. Hinges:-

The hood hinge is a pivot and bracket machanism that makes it possible for you to open and close your hood. it connects the hood & engine Compartment of car.

4. Latch:-

Latch is also known as stricker. which placed over the hood inner panel and use to locking hood and engine component.

Master Sketch:-

Master sketch is a given referance of the hood panel, which is provided as the dimensional referance for the desgin of hood panel. along with the master referance hood thickness and other informations are also provided.

Embossed:-

Embossed surface is an important role in car hood panel while crashing or accident of car. Hood is most affected part which sustains all the impact forces whlile crashing most of the impact forces are directly flows in the given direction with the help of embossed surface. embossed surface shaped is given on inner panel the impact forces coming in the direction is diverted toword corner point of the hood and car inside cabine couldn,t be harm.

Latch Trajectory:-

The hood latch on any car is used to connect the hood release cable to the hood locking mechanism. if it breaks you will no longer be able to open the hood using the hood release in the inside of the car, which will be problematic the next time you have to enter the engine bay.

Mastic Data:-

Mastic data is improves the NVH of the hood. mastic seal is one type of hard rubber it will join the inner and outer panel of the hood. mastic sealant improves the strength of the around 20 diameter.

Reinforcements:-

Hood reinforcement structures as provided to reduce impact in collisions and sound absorption. glass fibre filament is the most widely used material to reinfoce sound absorption elements in the automotive industry.

Manufacturing Process

Deep Drawing:-

Deep drawing is a sheetmetal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. thus a shape transformation process with material retention. the process is considerd deep drawing when the depth of the drawn part exceeds its diameter.

Hemming:-

Hemming process is basically used to join the inner hood panel and outer hood panel together. Hemming metal working process in which a sheet metal edge is rolled over itself. the edge of sheet is rolled the rollers 3 times in a diffent angles. while a seam joints the edges of two materials. hem are commonly used to reinforce an edge hide burrs and rough edges and improve appearance.

Relief is provieded during hemming.