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Linear analysis are state-of-the-art to determine the NVH behaviour of engines by use of the finite element method (FEM). Using direct methods for solving the equations even supercomputing does not help to prevent nonlinear transient analysis from being very time consuming and inefficient for the essentially large number of degrees of freedom. Presenting nonlinear transient analysis of different engines, new possibilities are shown for determining the NVH behaviour of complete power units.

Linear analysis are state-of-the-art to determine the NVH behaviour of engines by use of the finite element method (FEM). Using direct methods for solving the equations even supercomputing does not help to prevent nonlinear transient analysis from being very time consuming and inefficient for the essentially large number of degrees of freedom. Presenting nonlinear transient analysis results of different engines, the K+P software product XFEP/NVH is shown to be both highly sophisticated and efficient for determining the NVH behaviour of complete power units.

Linear static and dynamic analysis are state-of-the-art to determine the fatigue behaviour of crankshafts and the NVH behaviour of engines by use of the finite element method (FEM). Using direct methods for solving the equations even supercomputing does not help to prevent nonlinear transient analysis from being very time consuming and inefficient for the essentially large number of degrees of freedom. Presenting analysis results of a W12 motor sport engine, nonlinear simulation techniques are shown to be both highly sophisticated and efficient for determining the fatigue and the NVH behaviour of complete power units.

Linear static and dynamic analysis are state-of-the-art to determine the NVH behaviour of engines and the fatigue behaviour of crankshafts by use of the finite element method (FEM). Using direct methods for solving the equations even supercomputing does not help to prevent nonlinear transient analysis from being very time consuming and inefficient for the essentially large number of degrees of freedom. Presenting nonlinear transient analysis results of different engines, the K+P software products XFEP/CT and XFEP/NVH are shown to be both highly sophisticated and efficient for determining the NVH and the fatigue behaviour of complete power units.

Static analysis are state of the art to determine the stress behaviour by use of the finite element method (FEM). Using direct methods for solving the equations even supercomputing does not help to prevent transient stress analysis from being very time consuming and inefficient for the essentially large number of degrees of freedom. Presenting the nonlinear transient stress analysis for the rotating crankshaft of a 6-cylinder-inline engine, a method is shown which enables such analysis to be both highly sophisticated and efficient for determining the fatigue behaviour of crankshafts even using microcomputers.