민감도 해석과 다꾸지 기법을 이용한 대형트럭 캡의 Front Structure 최적화에 관한 연구

Recently, the size of Shock Absorber and air spring is enlarged to improve ride quality. Consequently, a location of front Cab mounting system is changed from under frame to front of dash board panel. In this paper, The goal is to improve strength and stiffness according to change of load point. For the optimization of design parameters in large-sized truck Cab system are used sensitivity analysis and Taguchi method which is one of the robust design methods. In order to obtain the best combination of each control factor, the dynamic and the norminal s-best type characteristic parameter method are used for the strength and stiffness output response. In this paper, eight control factors which are determinated according to sensitivity analysis are used for analysis; one with two levels and seven with three level combinations comprising the design of the L₁?(2¹X3?) orthogonal array. With this optimal design, The result of torsional test shows that strength is improved by 15% and the static stiffness increased by 30%.