Spectral Response Computation Of Aircraft Taxiing Based On Pseudo-excitation Method

In spectral response computation of aircraft taxiing with multiple wheels and multiple landing gears, as coherence exsits between wheels while displacement excitation is an effect, because the existing simulation softwares only can handle a single point of incentive or non-coherent multi-point random excitation, so it's necessary to make up a stochastic response calculation of a variety of forms of spectral analysis programs to meet the engineering calculations.Aim to settle multi-coherent random excitation problem in aircraft taxiing, this paper introduces a relatively new pseudo-excitation method, as well as coherence effects models, the preparation can calculate the form of a variety of stochastic response spectrum analysis procedures, and we try to study its role in the random response with a relatively new algorithm and expect to accelerate the computational efficiency. So, make use of the method of complete quadratic combination, square root of the sum of squares and the pseudo-excitation, base on commercial software and Fortran90 language, the main program is compiled. A simulation platform system is developed under LabVIEW8.5's environment, which leads to better operability and data processing. Compared to the conventional stochastic calculation method with the pseudo-excitation method's good and bad, verify the pseudo-excitation method is a fast randomized algorithm; the simulation system about spectral response of the aircraft taxiing is better to Nastran, and be able to deal with multi-point random excitation with coherent, and has a better computational efficiency and a clear interface. Experimental examples show that programs can handle large-scale structure of the form of aircraft taxiing response to a variety of stochastic response and it has advantage in speed and precision, and easy to use in engineering.