Design of backdoor

Design of Backdoor

Backdoor:

Backdoor is similar as side door of the car. The back door is a hinged door/tailgate at the rear of the vehicle. It may be used for loading and unloading cargo, or to get passengers in and out, in case there are seats present at the rear

Parts of Backdoor:

1) Outer Panel

2) Inner Panel

3) Reinforcements

1) Outer Panel:

Outer panel consists of upper and lower panel

2) Inner panel:

Inner panel has emboss structure to give rigid structure for it. It provides hinge axis mtg, wiper motor mtg, gas stay mtg

3) Reinforcements:

Reinforcements give rigid structure to mounting areas where the structure will be weak.

LOAD CASES:

1) BEND TEST

2) TORSION TEST

3) ABUSE CASES

4) DENT TEST

5) ASSSEMBLY LOAD CASE

6) ENDURANCE TEST

FUNCTIONAL HOLE:

Hole that is added with reiforcments in order to avoid tearing of parts

Design Methodologies:

Outer panel:

Make proper class A surface joint with good surfaces and make flange surface with respect to upper and lower outer panel with thickness of 0.75mm

Make proper hemming on the Corner of the outer panel around the surfaces. stress relief is applied at the corner area of the structure.

Inner Panel:

By offset the outer panel surface inner panel is made with proper emboss structure and mtg structure with thickness of 0.75mm.

Proper diepull is created with respect to the body panel. holes and emboss structure are created according to the tooling direction.Proper relief applied to the stress concentrated area.

Reinforcements:

Reinforcements added on the mtg area where the structure will be considered weak.

Hinge Axis Creation:

Hinge axis created perpendicular to the striker point.

Draft Analysis:

Draft Analysis is performed on the structure to check the part in tooling direction

Conclusion:

Thus the backdoor is created and draft analysis is performed on the design.