Dynamic Response of Functional Virtual Prototyping of Motorcycle under Combined Excitations  

作　　者：孙立星 舒歌群 卫海桥 

机构地区：[1]Internal Combustion Engine Research Institute, Tianjin University [2]State Key Laboratory of Engines, Tianjin University

出　　处：《Transactions of Tianjin University》2013年第4期279-286,共8页天津大学学报（英文版）

基　　金：Supported by National Natural Science Foundation of China (No. 51176138)

摘　　要：This paper developed 3D product models of motorcycle and engine by UGNX as well as virtual prototyping by ADAMS program with road roughness generated by MATLAB. Under the straight-line running condition, the dynamic responses of motorcycle multibody system to both road and engine excitations were compared with those to only road excitation in terms of vertical acceleration response, amplitude frequency response and power spectral density. The comparisons of simulation data showed that the response due to flat road excitation was around 20 Hz, while that to the combined excitations was in a wide frequency band, of which the major components focused on 10 Hz, 15 Hz, 35 Hz ,70 Hz, 100 Hz and even higher frequencies, reflecting the characteristics of engine excitation based on its unbalanced inertia force and torque. It is concluded that the high fidelity virtual prototyping can simulate the dynamics of motorcycle product well in investigating the vibration and ride comfort performance.This paper developed 3D product models of motorcycle and engine by UGNX as well as virtual prototyp- ing by ADAMS program with road roughness generated by MATLAB. Under the straight-line running condition, the dynamic responses of motorcycle multibody system to both road and engine excitations were compared with those to only road excitation in terms of vertical acceleration response, amplitude frequency response and power spectral den- sity. The comparisons of simulation data showed that the response due to flat road excitation was around 20 Hz, while that to the combined excitations was in a wide frequency band, of which the major components focused on 10 Hz, 15 Hz, 35 Hz ,70 Hz, 100 Hz and even higher frequencies, reflecting the characteristics of engine excitation based on its unbalanced inertia force and torque. It is concluded that the high fidelity virtual prototyping can simulate the dynamics of motorcycle product well in investigating the vibration and ride comfort performance.

关 键 词：multibody dynamics engine excitation road excitation motorcycle dynamic response 

分 类 号：U483[交通运输工程—载运工具运用工程] TP206.1[交通运输工程—道路与铁道工程]