Optimization Driven Method to Balance Bolt Force and Torque in Automotive Headlamp Assembly

Automotive headlamp designs have evolved considerably over the years, shifting from a utilitarian component of a vehicle to being a major part of its overall styling, particularly for the Front of the vehicle. In addition to this, Headlamps are a ‘mission-critical’ safety feature, especially for driving at night or in poor weather conditions. For this reason, they are subject to high performance requirements and must meet stringent automotive and highway safety standards. Modern headlamps are becoming bigger and heavier to accommodate attractive features like DRL lamps, Projector lamps and Adaptive lamps. The increased weight of the headlamp poses additional challenges with respect to the durability and loss of bolt preload during high road load events.