Abstract
<jats:p>Exhaust system durability performance is one of the most important concerns for emission control. It experiences cyclic loadings; to withstand these loads exhaust systems are equipped with the flex bellow. In this project different exhaust systems are studied. By studying the problem had been identified for particular commercial vehicle exhaust system at the flex bellow component, it is necessary to know the correct dimensions of the flex bellow before the design phase. In this project for the flex bellow component the experimental modal analysis was performed for identifying the vibrational related issues. Simultaneously the vibration isolation data was extracted for the same component. Those two results are correlated, shows that flex bellow component operated at the resonance frequency. To shift the resonance frequencies of the flex, bellow the design parameters are identified as size, length and diameter of the flex bellow. With these parameters the design of experiments is conducted for feasible prototype development. The new designed proto is tested as like previous vibration isolation data and modal analysis, the frequency of the component is shifted from the resonance frequency due to the decrease in the stiffness, the selected parameters are proposed for the new design products.</jats:p>