Calibration of Acoustic-Soil Discrete Element Model and Analysis of Influencing Factors on Accuracy

To obtain accurate soil parameters and improve the accuracy of acoustic-soil discrete element simulation model, we studied model’s parameter calibration. The test was carried out using measured acoustic velocity dominant frequency as response value (index). Firstly, Plackett—Burman scheme used to sensitivity ranking wave. that significantly affect wave were obtained: Shear modulus, Poisson’s ratio, coefficient restitution. Then Box—Behnken establish regression relationship between sound Coefficient results shows indexes researchers focus on are different in scenarios, indicators is different, which values after This study analyzed main factors affecting acoustic-discrete model constructing provided a method for improving construction wave—soil reference elements models other fields.