半拖式射控車之動態模擬安全性分析研究

• Main Authors: Lin Hua, 林暉
• Other Authors: 朱子文
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/38680863679929180866

碩士 === 國防大學中正理工學院 === 兵器系統工程研究所 === 94 === The aim of this research is to investigate the stability of an articulated vehicle under a cornering maneuver. This aim is approached by assessing the influence of parameter variations of the tire and suspension systems on the vehicle stability. A complex virtual prototype of the articulated vehicle with a tractor-semitrailer combination is established via ADAMS/View, in which the masses of the tractor and semitrailer are concentrated on the individual center of gravity respectively due to the lumped mass concept. The suspension system, tire, steering system and the fifth wheel are built, in turn, and connected to the tractor and semitrailer by appropriate joints. Computer simulation is then carried out based on the virtual vehicle model to explore the critical speed and roll angle in the margin of vehicle instability due to parameter variations of the tire and suspension systems. Simulation results show that the variation of the tire parameters has a greater influence on vehicle turning behavior than that of the suspension system. When the tire vertical stiffness is increased from -10% to +10% of its nominal value at the steering wheel angle of 60, the critical speed is changed from +33.67% to -28.21% of the its nominal value, and the critical roll angle is varied from +87.87% to -48.48% of the nominal critical roll angle. This research has demonstrated the influence of parameter variations on the critical cornering behavior of articulated vehicles. The results may be used as a reference for future vehicle design and as criteria for driving safety.