Hood design-Week 2
DESIGN OF HOOD ASSEMBLY
OBJECTIVE:
The main objective of this project is to design the hood assembly of the car using NX cad. The parts of the hood assemblys are hood outer surface, hood inner surface, striker, hinges.
INTRODUCTION:
The hood or bonnet is hinged cover over the engine of a car that allows access to the engine. In this project we have to designing the inner panel, outer panel, striker and hinges are assembled together using NX cad software
Design inputs:
Hood thickness information
Outer panel thickness = 0.75mm
Inner panel thickness = 0.75mm
Master section:
Creating the inner panel to prevent crash force towards hinge:
Assemblying the hinge and striker on inner panel:
Applying Hemming the hood outer panel maintaining gap as per master sketch:
Hemming is the process of joining hood inner panel and outer panel. Set of rollers roll the hood outer panel to get hemming surface. The gap between hood outer panel and inner panel is filled with sealants to make joint waterproof
Applying Mastic points to the hood inner panel:
Mastic is rubber like material, which is used to reduce vibration and noise. The mastics having diameter of 60 to 80mm
Applying reliefs at the corners to reduce stress concentration:
CONCLUSION:
Thus the hood assembly is completed designed as per the design inputs using NX Cad.