A novel method for fast calculation of the noise emission from an axial piston pump

Noise emission calculation is important for the performance evaluation of an axial piston pump. The method based on the finite element model is time-consuming, and the experiment-based method is costly. A novel method for fast calculation of the noise emission from an axial piston pump is presented in this paper. First, a lumped parameter (LP) model based on pressure build-up is developed to calculate the excitation force. Second, a multi-body dynamical model is developed to obtain the response of vibration in the pump under the excitation force. Third, a vibration response-based method is developed for the efficient calculation of noise emission. Last, a comprehensive experiment is conducted, and the simulated discharge pressure, vibration velocity, and sound pressure level (SPL) are compared with the measured results. The results indicate that the simulations are in good agreement with the experiments. The root mean square (RMS) calculation error of the noise amplitude is less than 4% with a simulation time of approximately 0.7 hours, and the simulated SPL cloud maps accurately exhibit the noise distribution. This study presents a promising method for the fast calculation of noise emissions from hydraulic pumps.