Hood design-Week 2

                                                HOOD DESIGN CHALLENGE

Introduction:

                  The Hood is also called as bonnet.The Hood is the main component of a car and it is located in the front position of the car.Then the Hood makes the car look like stylish and also gives the stylish looks.and then shape of the hood is made aerodynamic in order to minimize the air effect.

Hood Design Consideration:

            The Hoods are designed to reduce air resistance  as the air flows around the car.Then the hood is also designed for the many requriements.It acts as the cover for the engine and and also protects the passengers inside the car and it causes less for the person when hits on the car.

The Following parts are used to Design for the Hood,

           1.Hood Outer panel

           2.Hood inner panel 

           3.Hinge assembly

           4.Striker assembly

1.Hood outer panel:

                  The Hood outer panel is the cover of the inner panel,which gives the stylish look and has the luxurious look.The outer panel and inner panel  cannot join by an any welding processlike spot welding or rivet,which spoil the look of the hood. the outer panel was created from the generally from the extracted model of the given design as the part file.

2.Hood inner panel:

                              The inner panel was designed by the extraction of the outer panel and by doing the offset surface,offset curve in space,emboss,wave geometry linker,law extension,trim sheet and face blend by this option we designed the hood inner panel.and the lots of gap is allowed in the center of the inner panel due to the safety purpose of the person who hits on the car.and it also covers the engine and other parts in the car below the hood design.In this panel we only can attach the reinforcement,embossed,mastic points and etc.

3.Hinge Assembly:

                  The is the component that fixes the hood to fenders of the car.Then latch must be fixed perpendicular to the axis so that the hood opens or closed properly.While Designing the hinge is fitted on the hood inner panel. 

4.Striker Assembly:

         The striker is used for locking the hood with the car.It is usally placed on the top and center of the inner panel. 

The process involved in Designing the hood as a sheet metal operation is 

• Hemming
• Deep Drawing
• Embossing
• Blanking
• Piercing

Hemming:

          The hemming is the sheet metal forming process in whic sheets are joined by bending it to 180 degrees.The Hemming process is used in the automotive parts such as deck lids,trunk lids,doors and hoods.

Deep Drawing:

                    The Deep drawing is a manufacturing process that is used in the forming of sheet metal into the cup or box like structure.A deep drawing of sheet metal is performed with the punch and die.

Embossing:

           The embossing operation is commonly used as the combination heat and the pressure on the sheet metal,depending upon the which type of embossing is requried.

Latch trajectory:

           When opening or closing the hood,the latch must be perfectly aligned to the fixing or striker point.For that,the latches trajectory must be perpendicular to the hinge axis.