| Road traffic safety problem have become increasingly highlighted as the numberof motor vehicle is increasing. Eighty percent of accidents caused by vehicle isrelated with brake performance. Brake performance has the direct bearing on trafficsafety. The heat dispersion performance and resistance to thermal recession&waterrecession performance of disc brake are better when compared with drum brake. Airdisc brake is assembled in truck, passenger car, and school bus, etc, and is replacingdrum brake. Based the special geographical conditions and national conditions, whenwe design air disc brake, it is not the best way to allow the standards established byEurope and US. Instead, we should design air disc brake according to what it is inChina. Nowadays, Chinese air disc brake enterprises are busying with copy andimitate the product from Europe and US, so it is vital important to carry out researchon the structure and performance of air disc brake.Materials and technology for heating processing of parts from air disc brakewere designed with the help of data from one disc brake. Finte element (FE) model ofdifferent brackets and calipers were established by FE software ABAQUS. With thestatic model, stress and deformation were studied and the weak points of design werepointed out with rational suggestion. These could be references for design in thefuture.The geometric model of pad-disc system was established by software CATIA.The FE model of pad-disc system was established by software LS-PrePost andHypermesh, and the thermal coupling field was calculated by LS-DYNA solver.According to the result, thermal cpupling field was analyzed. At the same time,deformation regularity of brake disc was discussed. Finally, the lifetime of brake discis estimated by empirical formula Manson-Coffin.In order to study the thermal performance of brake disc, the FE model ofpad-disc system is used. The influence of central angle ratio, height, and number, etcof brake direct passage and curve passage and cut angle and included angle ontransient maximum temperature have been studied. Then, the optimization designs ofdirect passage and curve passage brake disc were proceeded by the method of orthogonal experiment. The influencing degree of each factor has been studied, andthe optical structures were established. |
