Abstract
Significant improvement in development duration of vehicles as well as Powertrain in combination with an increase in product quality demand will be achieved in the future by an intensive use of computer-based development tools starting with the concept design and ending in series production. This paper presents the results from a development process at FEV using latest CAE tools in order to simulate the dynamics of all acoustically predominant components focusing on the interaction of excitation mechanisms and noise transmission. Since the method is based on a combination of finite element analysis (FEA) and multi-body system simulation (MBA), two categories of simulation models need to be set up. The FEA models will be used to investigate the vibrational behavior of the housings (e.g. engine block, cylinder head, gear box), of the crank train / valve drive and its single components, the MBA models to simulate the dynamics of all moving components.