Recent development in Ansys LS-DYNA’s NVH solvers

LS-DYNA has been used in automotive industries for many years, especially in vehicle crashworthi-ness and occupant safety analysis areas. Besides that, LS-DYNA also provides many useful features for NVH (Noise, Vibration and Harshness) analysis. During the past few years, based on the feedback and suggestions from users, many updates and enhancements in the NVH solvers have been imple-mented, including - Fast FRF analysis with reduced eigenvectors. - Frequency dependent adaptive remeshing for BEM acoustics. - Frequency interpolation for BEM acoustic solvers. - Fluid added mass computation and its application in modal and vibration analysis. - Coupling of acoustic spectral element method and piezoelectric materials for ultrasonic sensor simulation. - Enhanced d3max output. - New options in fatigue solvers. - Other enhancements.