In the development phase of complex mechanical and mechatronic systems reliable dynamic simulation results are of highest importance. A meaningful fatigue assessment of jointed structures like car bodies, truck frames or bolted housings of electronic devices often requires consideration of the occurring contact stresses.
However, the underlying nonlinear contact conditions have the potential to increase the computational effort tremendously. Thus, accurate but still fast numerical models become necessary.
MAMBA is a tailored software solution for this type of analysis. To achieve feasible simulation throughput the contact analysis is performed in two steps. The first one is the identification of the contact interfaces as well as the creation of a reduced order model out of a finite element model for the respective jointed structures. The second step is the contact simulation based on this streamlined model.
Based on MAMBA the CAE engineer is ready for the dynamic analysis of jointed structures, either for evaluation of the vibrational behavior or for improved fatigue assessment. The next picture illustrates the fatigue assessment results for the battery bracket of a passenger car as an exemplary use case.