LMS Virtual.Lab NVH Load and Contribution Analysis is a comprehensive solution offering a wide range of tools to predict and assess a system’s noise and vibration response under operational loading, and to determine acting loads from physical prototype testing data. Using this solution, engineers can perform path or modal contribution analysis to determine the root causes of noise problems, and to optimize the noise and vibration behavior of their designs.
LMS Virtual.Lab Load Analysis and Contribution Analysis provides a number of estimation methods to calculate loads that reliably represent realistic customer usage. This includes a direct method in which forces are computed by multiplying the displacement difference over a mount by the frequency-dependent mount characteristic. This mount stiffness method is best suited when the connecting stiffness is known, for example in the case of engine mounts. The solution also includes an inverse method in which the loads are estimated from the operational responses they cause. This method is used for relatively stiff connections like suspension bushings that show small displacement differences over the connection.
Fast modal and FRF-based response prediction solvers, and the included path and modal contribution assessment tools, provide all the functionality to perform root-cause analyses and target setting exercises. The responses are visualized using a wide variety of NVH-specific post-processing utilities, and can be compared with pre-defined or imported targets.
