차량 측면도어 임팩트 빔의 최적설계 및 측면도어 충돌실험에 관한 연구

Abstract

The impact beam, a beam-shaped reinforcement installed horizontally between the inside and outsidepanels of car doors, is gaining importance as a solution to meet the regulations on side collision of vehicles. Inorder to minimize pelvis injury which is the biggest injury happening to the driver and passengers when a vehicleis subject to side collision, energy absorption at the door impact beam should be maximized. For the inner panel,the thrust into the inside of the vehicle must be minimized. The impact beam should be as light as possible sothat the extent of pelvis injury to the driver and passenger during side collision of the vehicle is minimal. Toachieve this, the weight of the impact beam, has to be optimized. In this study, we perform a design analysis witha goal to reduce the weight of the current impact design by 30% while ensuring stability, reliability, and comparisondata of the impact beam for mass production. We conduct three-point bending stress experiments on conventionalimpact beams and analyze the results. In addition, we use a side-door collision test apparatus to testthe performance of beams made of three (different materials: steel, aluminum, and composite beams).