The optimization of power parameters is the key to design pure electric vehicles. Reasonable matching relationship between various can effectively reduce energy consumption and achieve sustainability. In this paper, several vehicle performance indexes such as maximum speed, acceleration time per 100 km were used target vectors, transmission ratio was variable establish problem parameter matchin...

crack identification is a very important issue in mechanical systems, because it is a damage that if develops may cause catastrophic failure. in the first part of this research, modal analysis of a multi-cracked variable cross-section beam is done using finite element method. then, the obtained results are validated usingthe results of experimental modal analysis tests. in the next part, a nove...