A Study on Improvement of Cooling Performance through Vent Structure Optimization of Carbon Ceramic Composite Disc

카본 세라믹 복합재 디스크의 벤트 구조 최적화를 통한 냉각성능 향상에 관한 연구

Abstract

Recently, use of composite materials has been increasing for body structures and chassis parts in the car industry because of weight reduction effect and excellent mechanical thermal characteristics. However, application of composite materials in brake system is very difficult because it is hard to obtain enough brake performance due to low heat storage capacity of the composite materials. In this paper, we will present new carbon ceramic composite disc with high flow characteristic. To obtain this characteristic, new vent structures were designed by using ARIZ method and substance-field model analysis. The flow effect of these vent structures on the brake performance was verified by pugh matrix and cooling test. The test results show improvement of cooling performance up to $30^{\circ}C$. Finally, These results will improve brake the reliability of the brake performance for the high performance vehicles and electric vehicles.

Fig. 1 Definition of engineering contradiction using function analysis and trimming

Fig. 3 Analysis result of converting engineering contradictionto physical contradiction to physical contradiction

Fig. 4 Results of concept derivation

Fig. 5 First step pugh matrix to evaluate novel design result comparing other system

Fig. 6 CAE analysis for second step pugh matrix

Fig. 7 Second step pugh matrix to evaluate final design result

Fig. 8 Manufacture result

Fig. 9 Comparison result on both CAE analysis and test

Fig. 10 Test result of robust characteristics

Fig. 2 Consideration process of IFR (Ideal Final Result) and physical contradiction using ARIZ application

Table 1 Comparison of lightweight effect