Time-domain Response Simulation Research on a Certain Type of Ammunition Transport Vehicle

[摘要] A 1/2 seven degree-of-freedom vehicle dynamic model was built for exploring the excitation that was obtained from a certain type of ammunition transport vehicle, which running on standard highway at the speed of 20m/s. According to the power spectral density function advised by national standard, the harmony superposition method (HSM) and pseudo white noise method (PWNM) were both used for simulating the road roughness. And the roughness of generated by these two methods was analysed and compared by MATLAB. Moreover, the vertical acceleration responses spectrum of grade A; B; C road were calculated. The numerical results reflect that the HSM is better than PWNM in road roughness simulation with the same time step size, and the root mean square value (RMS) of car centre of mass will grow largely with the decrease of road grade, the calculation results show the RMS of grade C road is above 300% than that of A.

[发布机构] Army Engineering University, Shijiazhuang; 050003, China^1

[效力级别] 无线电电子学

[关键词] Calculation results;Harmony superposition method;Pseudo white noise;Root mean square values;Simulation research;Time domain response;Vehicle dynamic model;Vertical accelerations