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하벼리(Byoeri Ha),장병춘(Byoungchun Chang),백일현(Ilhyun Baek),노윤식(Yunsik Ro),박경훈(Gyounghoon Park),김성훈(Sunghoon Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Air brake system is a type of friction brake for vehicles in which compressed air pressing on a piston is used to apply the pressure to the brake pad needed to stop the vehicle. Air brakes are used in heavy duty vehicles and need high stiffness. Spring guide is device to set position of power spring in brake chamber. It has reliability problems by friction, wear damage and high load from power spring. In this paper, spring guide is designed to apply PA66 material and temporary product is made for design assessment. And shape optimization is performed using taguchi method and finite element analysis. As a result, SN ratio is calculated considering safety factor and weight lightening. Using taguchi method, predicted safety factor is similar to analysis result. Finally, designed optimum model is 28.3% lighter than temporary product and 66.6% lighter than existing steel product.