Hood design-Week 2

HOOD

In the automobile Hood or Bonnet pay very major role. The Hood is opening body panel that cover engine Compartment in the front engine vehicle. It consist of combination of inner and inner panel where inner panel provides strength and outer panel provide cover part. Hood is used to decorate front portion of the car and add luxurious look.

In this report major area is Design consideration, Functional requirement Hood Hing and its function, Latch and its function and joining operation.

DESIGN CONSIDRATION:-

Hood of engine design in such a way that reduces air effect and all the maintenance part easy to do and it should also protect from the external disturbance on the engine. When car comes to an accident it must should be impact force and distributed out side so it should be the Y-shape.

While designing Hood should take care of Safety, Quality, Styling and manufacturing. The Most important safety requirement to be consider while designing the Hood is the pedestrian safety from collision from the front side. Pedestrian safety, It’s a norm which provides safety feature to body when car get collide from the front side and reduce the injuries to the body.

MANUFACTURING REQUIRMENT:-

• Before get into the production it is very important to design it and look into the requirement. Material should be impact absorber and lighter in weight.
• Avoid to provide sharp corners, corner and Negative draft.
• Outer Panel Thickness= 0.75 mm
• Inner Panel Thickness= 0.75mm
• Reinforcement Thickness= 1.5mm

Master Section:-

It gives information of the Hood inner and outer panel to get the desired shape and size. After getting the shape Embossing is feature which used to raised the surface. It also provides strength and direct the force from front collision toward the hinge and body of car.

Position of Hinge and Striker:-

For the proper opening and closing of the hood, the striker should be perpendicular to the trajectory of the hood.

Latch and Hing Reinforcement:-

Hinge:- It is used to mount the Hood into the desired position so that it can be easily can closed and open when required.

Latch:- It is mounted in inner panel and provides locking system.

Mastic:-

As the outer panel provides luxurious look so we can’t provides nut & bolts or welding on that. So here mastic sealant is used to pack the inner and outer panel included hamming. It is in the liquid from but when it goes into the hot bath furnace it get hard and provide strength to the hood.

HEMMING:-

Here, edge is rolled like U-shape for joining and it also improve appearance of combined body.

Relief :-

I used Generative shape Design then Part Design for convert solid body in CATIA V5. Main tools which I used in this model is:-

Position sketch

Extrude

Offset

Sweep

Join

Smooth curve

Projected curve

Fillet

Symmetry

Different View Of Hood are below:-