TY - GEN
T1 - Non-linear or linear propagation in high intensity blasts from firearms
T2 - 30th International Conference on Noise and Vibration Engineering, ISMA 2022 and 9th International Conference on Uncertainty in Structural Dynamics, USD 2022
AU - Billot, G.
AU - Marinus, B. G.
AU - Harri, Kristof
AU - Moiny, F.
N1 - Publisher Copyright:
© 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Acoustic nonlinearity increases the degree of modelling complexity but is nevertheless necessary to fully capture the time-frequency content of an impulsive event. Both national and international standards commonly deployed to predict free-field outdoor sound propagation from firearms (ISO 9613, NT Acou 099, ISO 17201) not only neglect nonlinear phenomena, but also fail in providing a clear-cut methodology to discriminate between linear and nonlinear regimes. Correctly establishing the extent of the transition region between the nonlinear and linear solvers allows to optimize the prediction strategies, by allocating the right computational resources where most needed. The present study attempts to make clarity on the subject by observing the evolution of key metrics in the propagation of blasts from small and large caliber weapons. On-field test campaigns were carried out to obtain the datasets needed for the analysis and the free-field propagation of the muzzle blast is simulated with a Nonlinear Progressive Wave Equation solver.
AB - Acoustic nonlinearity increases the degree of modelling complexity but is nevertheless necessary to fully capture the time-frequency content of an impulsive event. Both national and international standards commonly deployed to predict free-field outdoor sound propagation from firearms (ISO 9613, NT Acou 099, ISO 17201) not only neglect nonlinear phenomena, but also fail in providing a clear-cut methodology to discriminate between linear and nonlinear regimes. Correctly establishing the extent of the transition region between the nonlinear and linear solvers allows to optimize the prediction strategies, by allocating the right computational resources where most needed. The present study attempts to make clarity on the subject by observing the evolution of key metrics in the propagation of blasts from small and large caliber weapons. On-field test campaigns were carried out to obtain the datasets needed for the analysis and the free-field propagation of the muzzle blast is simulated with a Nonlinear Progressive Wave Equation solver.
UR - http://www.scopus.com/inward/record.url?scp=85195914906&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85195914906
T3 - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
SP - 2440
EP - 2453
BT - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - Neeckx, S.
PB - KU Leuven, Departement Werktuigkunde
Y2 - 12 September 2022 through 14 September 2022
ER -